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1539 lines
54 KiB
1539 lines
54 KiB
/*M/////////////////////////////////////////////////////////////////////////////////////// |
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// |
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. |
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// |
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// By downloading, copying, installing or using the software you agree to this license. |
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// If you do not agree to this license, do not download, install, |
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// copy or use the software. |
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// |
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// |
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// License Agreement |
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// For Open Source Computer Vision Library |
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// |
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved. |
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved. |
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// Third party copyrights are property of their respective owners. |
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// |
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// Redistribution and use in source and binary forms, with or without modification, |
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// are permitted provided that the following conditions are met: |
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// |
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// * Redistribution's of source code must retain the above copyright notice, |
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// this list of conditions and the following disclaimer. |
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// |
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// * Redistribution's in binary form must reproduce the above copyright notice, |
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// this list of conditions and the following disclaimer in the documentation |
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// and/or other materials provided with the distribution. |
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// |
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// * The name of the copyright holders may not be used to endorse or promote products |
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// derived from this software without specific prior written permission. |
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// |
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// This software is provided by the copyright holders and contributors "as is" and |
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// any express or implied warranties, including, but not limited to, the implied |
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// warranties of merchantability and fitness for a particular purpose are disclaimed. |
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// In no event shall the Intel Corporation or contributors be liable for any direct, |
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// indirect, incidental, special, exemplary, or consequential damages |
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// (including, but not limited to, procurement of substitute goods or services; |
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// loss of use, data, or profits; or business interruption) however caused |
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// and on any theory of liability, whether in contract, strict liability, |
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// or tort (including negligence or otherwise) arising in any way out of |
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// the use of this software, even if advised of the possibility of such damage. |
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// |
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//M*/ |
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#include "precomp.hpp" |
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/* |
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* This file includes the code, contributed by Simon Perreault |
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* (the function icvMedianBlur_8u_O1) |
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* |
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* Constant-time median filtering -- http://nomis80.org/ctmf.html |
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* Copyright (C) 2006 Simon Perreault |
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* |
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* Contact: |
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* Laboratoire de vision et systemes numeriques |
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* Pavillon Adrien-Pouliot |
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* Universite Laval |
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* Sainte-Foy, Quebec, Canada |
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* G1K 7P4 |
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* |
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* perreaul@gel.ulaval.ca |
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*/ |
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namespace cv |
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{ |
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/****************************************************************************************\ |
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Box Filter |
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\****************************************************************************************/ |
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template<typename T, typename ST> struct RowSum : public BaseRowFilter |
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{ |
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RowSum( int _ksize, int _anchor ) |
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{ |
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ksize = _ksize; |
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anchor = _anchor; |
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} |
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void operator()(const uchar* src, uchar* dst, int width, int cn) |
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{ |
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const T* S = (const T*)src; |
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ST* D = (ST*)dst; |
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int i = 0, k, ksz_cn = ksize*cn; |
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width = (width - 1)*cn; |
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for( k = 0; k < cn; k++, S++, D++ ) |
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{ |
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ST s = 0; |
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for( i = 0; i < ksz_cn; i += cn ) |
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s += S[i]; |
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D[0] = s; |
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for( i = 0; i < width; i += cn ) |
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{ |
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s += S[i + ksz_cn] - S[i]; |
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D[i+cn] = s; |
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} |
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} |
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} |
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}; |
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template<typename ST, typename T> struct ColumnSum : public BaseColumnFilter |
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{ |
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ColumnSum( int _ksize, int _anchor, double _scale ) |
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{ |
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ksize = _ksize; |
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anchor = _anchor; |
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scale = _scale; |
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sumCount = 0; |
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} |
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void reset() { sumCount = 0; } |
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void operator()(const uchar** src, uchar* dst, int dststep, int count, int width) |
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{ |
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int i; |
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ST* SUM; |
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bool haveScale = scale != 1; |
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double _scale = scale; |
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if( width != (int)sum.size() ) |
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{ |
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sum.resize(width); |
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sumCount = 0; |
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} |
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SUM = &sum[0]; |
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if( sumCount == 0 ) |
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{ |
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for( i = 0; i < width; i++ ) |
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SUM[i] = 0; |
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for( ; sumCount < ksize - 1; sumCount++, src++ ) |
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{ |
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const ST* Sp = (const ST*)src[0]; |
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for( i = 0; i <= width - 2; i += 2 ) |
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{ |
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ST s0 = SUM[i] + Sp[i], s1 = SUM[i+1] + Sp[i+1]; |
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SUM[i] = s0; SUM[i+1] = s1; |
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} |
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for( ; i < width; i++ ) |
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SUM[i] += Sp[i]; |
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} |
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} |
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else |
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{ |
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CV_Assert( sumCount == ksize-1 ); |
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src += ksize-1; |
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} |
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for( ; count--; src++ ) |
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{ |
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const ST* Sp = (const ST*)src[0]; |
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const ST* Sm = (const ST*)src[1-ksize]; |
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T* D = (T*)dst; |
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if( haveScale ) |
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{ |
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for( i = 0; i <= width - 2; i += 2 ) |
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{ |
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ST s0 = SUM[i] + Sp[i], s1 = SUM[i+1] + Sp[i+1]; |
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D[i] = saturate_cast<T>(s0*_scale); |
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D[i+1] = saturate_cast<T>(s1*_scale); |
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s0 -= Sm[i]; s1 -= Sm[i+1]; |
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SUM[i] = s0; SUM[i+1] = s1; |
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} |
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for( ; i < width; i++ ) |
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{ |
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ST s0 = SUM[i] + Sp[i]; |
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D[i] = saturate_cast<T>(s0*_scale); |
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SUM[i] = s0 - Sm[i]; |
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} |
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} |
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else |
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{ |
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for( i = 0; i <= width - 2; i += 2 ) |
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{ |
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ST s0 = SUM[i] + Sp[i], s1 = SUM[i+1] + Sp[i+1]; |
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D[i] = saturate_cast<T>(s0); |
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D[i+1] = saturate_cast<T>(s1); |
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s0 -= Sm[i]; s1 -= Sm[i+1]; |
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SUM[i] = s0; SUM[i+1] = s1; |
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} |
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for( ; i < width; i++ ) |
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{ |
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ST s0 = SUM[i] + Sp[i]; |
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D[i] = saturate_cast<T>(s0); |
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SUM[i] = s0 - Sm[i]; |
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} |
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} |
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dst += dststep; |
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} |
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} |
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double scale; |
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int sumCount; |
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vector<ST> sum; |
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}; |
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Ptr<BaseRowFilter> getRowSumFilter(int srcType, int sumType, int ksize, int anchor) |
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{ |
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int sdepth = CV_MAT_DEPTH(srcType), ddepth = CV_MAT_DEPTH(sumType); |
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CV_Assert( CV_MAT_CN(sumType) == CV_MAT_CN(srcType) ); |
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if( anchor < 0 ) |
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anchor = ksize/2; |
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if( sdepth == CV_8U && ddepth == CV_32S ) |
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return Ptr<BaseRowFilter>(new RowSum<uchar, int>(ksize, anchor)); |
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if( sdepth == CV_8U && ddepth == CV_64F ) |
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return Ptr<BaseRowFilter>(new RowSum<uchar, double>(ksize, anchor)); |
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if( sdepth == CV_16U && ddepth == CV_32S ) |
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return Ptr<BaseRowFilter>(new RowSum<ushort, int>(ksize, anchor)); |
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if( sdepth == CV_16U && ddepth == CV_64F ) |
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return Ptr<BaseRowFilter>(new RowSum<ushort, double>(ksize, anchor)); |
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if( sdepth == CV_16S && ddepth == CV_32S ) |
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return Ptr<BaseRowFilter>(new RowSum<short, int>(ksize, anchor)); |
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if( sdepth == CV_32S && ddepth == CV_32S ) |
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return Ptr<BaseRowFilter>(new RowSum<int, int>(ksize, anchor)); |
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if( sdepth == CV_16S && ddepth == CV_64F ) |
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return Ptr<BaseRowFilter>(new RowSum<short, double>(ksize, anchor)); |
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if( sdepth == CV_32F && ddepth == CV_64F ) |
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return Ptr<BaseRowFilter>(new RowSum<float, double>(ksize, anchor)); |
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if( sdepth == CV_64F && ddepth == CV_64F ) |
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return Ptr<BaseRowFilter>(new RowSum<double, double>(ksize, anchor)); |
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CV_Error_( CV_StsNotImplemented, |
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("Unsupported combination of source format (=%d), and buffer format (=%d)", |
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srcType, sumType)); |
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return Ptr<BaseRowFilter>(0); |
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} |
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Ptr<BaseColumnFilter> getColumnSumFilter(int sumType, int dstType, int ksize, |
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int anchor, double scale) |
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{ |
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int sdepth = CV_MAT_DEPTH(sumType), ddepth = CV_MAT_DEPTH(dstType); |
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CV_Assert( CV_MAT_CN(sumType) == CV_MAT_CN(dstType) ); |
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if( anchor < 0 ) |
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anchor = ksize/2; |
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if( ddepth == CV_8U && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, uchar>(ksize, anchor, scale)); |
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if( ddepth == CV_8U && sdepth == CV_64F ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<double, uchar>(ksize, anchor, scale)); |
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if( ddepth == CV_16U && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, ushort>(ksize, anchor, scale)); |
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if( ddepth == CV_16U && sdepth == CV_64F ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<double, ushort>(ksize, anchor, scale)); |
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if( ddepth == CV_16S && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, short>(ksize, anchor, scale)); |
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if( ddepth == CV_16S && sdepth == CV_64F ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<double, short>(ksize, anchor, scale)); |
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if( ddepth == CV_32S && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, int>(ksize, anchor, scale)); |
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if( ddepth == CV_32F && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, float>(ksize, anchor, scale)); |
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if( ddepth == CV_32F && sdepth == CV_64F ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<double, float>(ksize, anchor, scale)); |
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if( ddepth == CV_64F && sdepth == CV_32S ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<int, double>(ksize, anchor, scale)); |
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if( ddepth == CV_64F && sdepth == CV_64F ) |
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return Ptr<BaseColumnFilter>(new ColumnSum<double, double>(ksize, anchor, scale)); |
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CV_Error_( CV_StsNotImplemented, |
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("Unsupported combination of sum format (=%d), and destination format (=%d)", |
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sumType, dstType)); |
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return Ptr<BaseColumnFilter>(0); |
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} |
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Ptr<FilterEngine> createBoxFilter( int srcType, int dstType, Size ksize, |
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Point anchor, bool normalize, int borderType ) |
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{ |
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int sdepth = CV_MAT_DEPTH(srcType); |
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int cn = CV_MAT_CN(srcType), sumType = CV_64F; |
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if( sdepth < CV_32S && (!normalize || |
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ksize.width*ksize.height <= (sdepth == CV_8U ? (1<<23) : |
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sdepth == CV_16U ? (1 << 15) : (1 << 16))) ) |
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sumType = CV_32S; |
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sumType = CV_MAKETYPE( sumType, cn ); |
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Ptr<BaseRowFilter> rowFilter = getRowSumFilter(srcType, sumType, ksize.width, anchor.x ); |
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Ptr<BaseColumnFilter> columnFilter = getColumnSumFilter(sumType, |
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dstType, ksize.height, anchor.y, normalize ? 1./(ksize.width*ksize.height) : 1); |
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return Ptr<FilterEngine>(new FilterEngine(Ptr<BaseFilter>(0), rowFilter, columnFilter, |
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srcType, dstType, sumType, borderType )); |
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} |
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void boxFilter( const Mat& src, Mat& dst, int ddepth, |
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Size ksize, Point anchor, |
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bool normalize, int borderType ) |
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{ |
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int sdepth = src.depth(), cn = src.channels(); |
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if( ddepth < 0 ) |
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ddepth = sdepth; |
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dst.create( src.size(), CV_MAKETYPE(ddepth, cn) ); |
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if( borderType != BORDER_CONSTANT && normalize ) |
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{ |
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if( src.rows == 1 ) |
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ksize.height = 1; |
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if( src.cols == 1 ) |
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ksize.width = 1; |
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} |
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Ptr<FilterEngine> f = createBoxFilter( src.type(), dst.type(), |
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ksize, anchor, normalize, borderType ); |
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f->apply( src, dst ); |
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} |
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/****************************************************************************************\ |
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Gaussian Blur |
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\****************************************************************************************/ |
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Mat getGaussianKernel( int n, double sigma, int ktype ) |
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{ |
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const int SMALL_GAUSSIAN_SIZE = 7; |
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static const float small_gaussian_tab[][SMALL_GAUSSIAN_SIZE] = |
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{ |
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{1.f}, |
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{0.25f, 0.5f, 0.25f}, |
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{0.0625f, 0.25f, 0.375f, 0.25f, 0.0625f}, |
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{0.03125f, 0.109375f, 0.21875f, 0.28125f, 0.21875f, 0.109375f, 0.03125f} |
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}; |
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const float* fixed_kernel = n % 2 == 1 && n <= SMALL_GAUSSIAN_SIZE && sigma <= 0 ? |
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small_gaussian_tab[n>>1] : 0; |
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CV_Assert( ktype == CV_32F || ktype == CV_64F ); |
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Mat kernel(n, 1, ktype); |
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float* cf = (float*)kernel.data; |
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double* cd = (double*)kernel.data; |
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double sigmaX = sigma > 0 ? sigma : ((n-1)*0.5 - 1)*0.3 + 0.8; |
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double scale2X = -0.5/(sigmaX*sigmaX); |
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double sum = 0; |
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int i; |
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for( i = 0; i < n; i++ ) |
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{ |
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double x = i - (n-1)*0.5; |
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double t = fixed_kernel ? (double)fixed_kernel[i] : std::exp(scale2X*x*x); |
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if( ktype == CV_32F ) |
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{ |
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cf[i] = (float)t; |
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sum += cf[i]; |
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} |
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else |
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{ |
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cd[i] = t; |
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sum += cd[i]; |
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} |
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} |
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sum = 1./sum; |
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for( i = 0; i < n; i++ ) |
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{ |
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if( ktype == CV_32F ) |
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cf[i] = (float)(cf[i]*sum); |
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else |
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cd[i] *= sum; |
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} |
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return kernel; |
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} |
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Ptr<FilterEngine> createGaussianFilter( int type, Size ksize, |
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double sigma1, double sigma2, |
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int borderType ) |
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{ |
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int depth = CV_MAT_DEPTH(type); |
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if( sigma2 <= 0 ) |
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sigma2 = sigma1; |
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// automatic detection of kernel size from sigma |
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if( ksize.width <= 0 && sigma1 > 0 ) |
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ksize.width = cvRound(sigma1*(depth == CV_8U ? 3 : 4)*2 + 1)|1; |
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if( ksize.height <= 0 && sigma2 > 0 ) |
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ksize.height = cvRound(sigma2*(depth == CV_8U ? 3 : 4)*2 + 1)|1; |
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CV_Assert( ksize.width > 0 && ksize.width % 2 == 1 && |
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ksize.height > 0 && ksize.height % 2 == 1 ); |
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sigma1 = std::max( sigma1, 0. ); |
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sigma2 = std::max( sigma2, 0. ); |
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Mat kx = getGaussianKernel( ksize.width, sigma1, std::max(depth, CV_32F) ); |
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Mat ky; |
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if( ksize.height == ksize.width && std::abs(sigma1 - sigma2) < DBL_EPSILON ) |
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ky = kx; |
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else |
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ky = getGaussianKernel( ksize.height, sigma2, std::max(depth, CV_32F) ); |
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return createSeparableLinearFilter( type, type, kx, ky, Point(-1,-1), 0, borderType ); |
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} |
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void GaussianBlur( const Mat& src, Mat& dst, Size ksize, |
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double sigma1, double sigma2, |
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int borderType ) |
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{ |
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if( ksize.width == 1 && ksize.height == 1 ) |
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{ |
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src.copyTo(dst); |
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return; |
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} |
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dst.create( src.size(), src.type() ); |
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if( borderType != BORDER_CONSTANT ) |
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{ |
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if( src.rows == 1 ) |
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ksize.height = 1; |
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if( src.cols == 1 ) |
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ksize.width = 1; |
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} |
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Ptr<FilterEngine> f = createGaussianFilter( src.type(), ksize, sigma1, sigma2, borderType ); |
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f->apply( src, dst ); |
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} |
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/****************************************************************************************\ |
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Median Filter |
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\****************************************************************************************/ |
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#if _MSC_VER >= 1200 |
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#pragma warning( disable: 4244 ) |
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#endif |
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typedef ushort HT; |
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/** |
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* This structure represents a two-tier histogram. The first tier (known as the |
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* "coarse" level) is 4 bit wide and the second tier (known as the "fine" level) |
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* is 8 bit wide. Pixels inserted in the fine level also get inserted into the |
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* coarse bucket designated by the 4 MSBs of the fine bucket value. |
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* |
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* The structure is aligned on 16 bits, which is a prerequisite for SIMD |
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* instructions. Each bucket is 16 bit wide, which means that extra care must be |
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* taken to prevent overflow. |
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*/ |
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typedef struct |
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{ |
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HT coarse[16]; |
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HT fine[16][16]; |
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} Histogram; |
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#if CV_SSE2 |
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#define MEDIAN_HAVE_SIMD 1 |
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static inline void histogram_add_simd( const HT x[16], HT y[16] ) |
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{ |
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const __m128i* rx = (const __m128i*)x; |
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__m128i* ry = (__m128i*)y; |
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__m128i r0 = _mm_add_epi16(_mm_load_si128(ry+0),_mm_load_si128(rx+0)); |
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__m128i r1 = _mm_add_epi16(_mm_load_si128(ry+1),_mm_load_si128(rx+1)); |
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_mm_store_si128(ry+0, r0); |
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_mm_store_si128(ry+1, r1); |
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} |
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static inline void histogram_sub_simd( const HT x[16], HT y[16] ) |
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{ |
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const __m128i* rx = (const __m128i*)x; |
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__m128i* ry = (__m128i*)y; |
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__m128i r0 = _mm_sub_epi16(_mm_load_si128(ry+0),_mm_load_si128(rx+0)); |
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__m128i r1 = _mm_sub_epi16(_mm_load_si128(ry+1),_mm_load_si128(rx+1)); |
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_mm_store_si128(ry+0, r0); |
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_mm_store_si128(ry+1, r1); |
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} |
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#else |
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#define MEDIAN_HAVE_SIMD 0 |
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#endif |
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static inline void histogram_add( const HT x[16], HT y[16] ) |
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{ |
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int i; |
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for( i = 0; i < 16; ++i ) |
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y[i] = (HT)(y[i] + x[i]); |
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} |
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static inline void histogram_sub( const HT x[16], HT y[16] ) |
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{ |
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int i; |
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for( i = 0; i < 16; ++i ) |
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y[i] = (HT)(y[i] - x[i]); |
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} |
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static inline void histogram_muladd( int a, const HT x[16], |
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HT y[16] ) |
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{ |
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for( int i = 0; i < 16; ++i ) |
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y[i] = (HT)(y[i] + a * x[i]); |
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} |
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static void |
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medianBlur_8u_O1( const Mat& _src, Mat& _dst, int ksize ) |
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{ |
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/** |
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* HOP is short for Histogram OPeration. This macro makes an operation \a op on |
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* histogram \a h for pixel value \a x. It takes care of handling both levels. |
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*/ |
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#define HOP(h,x,op) \ |
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h.coarse[x>>4] op, \ |
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*((HT*)h.fine + x) op |
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|
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#define COP(c,j,x,op) \ |
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h_coarse[ 16*(n*c+j) + (x>>4) ] op, \ |
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h_fine[ 16 * (n*(16*c+(x>>4)) + j) + (x & 0xF) ] op |
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int cn = _dst.channels(), m = _dst.rows, r = (ksize-1)/2; |
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size_t sstep = _src.step, dstep = _dst.step; |
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Histogram CV_DECL_ALIGNED(16) H[4]; |
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HT CV_DECL_ALIGNED(16) luc[4][16]; |
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int STRIPE_SIZE = std::min( _dst.cols, 512/cn ); |
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vector<HT> _h_coarse(1 * 16 * (STRIPE_SIZE + 2*r) * cn + 16); |
|
vector<HT> _h_fine(16 * 16 * (STRIPE_SIZE + 2*r) * cn + 16); |
|
HT* h_coarse = alignPtr(&_h_coarse[0], 16); |
|
HT* h_fine = alignPtr(&_h_fine[0], 16); |
|
#if MEDIAN_HAVE_SIMD |
|
volatile bool useSIMD = checkHardwareSupport(CV_CPU_SSE2); |
|
#endif |
|
|
|
for( int x = 0; x < _dst.cols; x += STRIPE_SIZE ) |
|
{ |
|
int i, j, k, c, n = std::min(_dst.cols - x, STRIPE_SIZE) + r*2; |
|
const uchar* src = _src.data + x*cn; |
|
uchar* dst = _dst.data + (x - r)*cn; |
|
|
|
memset( h_coarse, 0, 16*n*cn*sizeof(h_coarse[0]) ); |
|
memset( h_fine, 0, 16*16*n*cn*sizeof(h_fine[0]) ); |
|
|
|
// First row initialization |
|
for( c = 0; c < cn; c++ ) |
|
{ |
|
for( j = 0; j < n; j++ ) |
|
COP( c, j, src[cn*j+c], += r+2 ); |
|
|
|
for( i = 1; i < r; i++ ) |
|
{ |
|
const uchar* p = src + sstep*std::min(i, m-1); |
|
for ( j = 0; j < n; j++ ) |
|
COP( c, j, p[cn*j+c], ++ ); |
|
} |
|
} |
|
|
|
for( i = 0; i < m; i++ ) |
|
{ |
|
const uchar* p0 = src + sstep * std::max( 0, i-r-1 ); |
|
const uchar* p1 = src + sstep * std::min( m-1, i+r ); |
|
|
|
memset( H, 0, cn*sizeof(H[0]) ); |
|
memset( luc, 0, cn*sizeof(luc[0]) ); |
|
for( c = 0; c < cn; c++ ) |
|
{ |
|
// Update column histograms for the entire row. |
|
for( j = 0; j < n; j++ ) |
|
{ |
|
COP( c, j, p0[j*cn + c], -- ); |
|
COP( c, j, p1[j*cn + c], ++ ); |
|
} |
|
|
|
// First column initialization |
|
for( k = 0; k < 16; ++k ) |
|
histogram_muladd( 2*r+1, &h_fine[16*n*(16*c+k)], &H[c].fine[k][0] ); |
|
|
|
#if MEDIAN_HAVE_SIMD |
|
if( useSIMD ) |
|
{ |
|
for( j = 0; j < 2*r; ++j ) |
|
histogram_add_simd( &h_coarse[16*(n*c+j)], H[c].coarse ); |
|
|
|
for( j = r; j < n-r; j++ ) |
|
{ |
|
int t = 2*r*r + 2*r, b, sum = 0; |
|
HT* segment; |
|
|
|
histogram_add_simd( &h_coarse[16*(n*c + std::min(j+r,n-1))], H[c].coarse ); |
|
|
|
// Find median at coarse level |
|
for ( k = 0; k < 16 ; ++k ) |
|
{ |
|
sum += H[c].coarse[k]; |
|
if ( sum > t ) |
|
{ |
|
sum -= H[c].coarse[k]; |
|
break; |
|
} |
|
} |
|
assert( k < 16 ); |
|
|
|
/* Update corresponding histogram segment */ |
|
if ( luc[c][k] <= j-r ) |
|
{ |
|
memset( &H[c].fine[k], 0, 16 * sizeof(HT) ); |
|
for ( luc[c][k] = j-r; luc[c][k] < MIN(j+r+1,n); ++luc[c][k] ) |
|
histogram_add_simd( &h_fine[16*(n*(16*c+k)+luc[c][k])], H[c].fine[k] ); |
|
|
|
if ( luc[c][k] < j+r+1 ) |
|
{ |
|
histogram_muladd( j+r+1 - n, &h_fine[16*(n*(16*c+k)+(n-1))], &H[c].fine[k][0] ); |
|
luc[c][k] = (HT)(j+r+1); |
|
} |
|
} |
|
else |
|
{ |
|
for ( ; luc[c][k] < j+r+1; ++luc[c][k] ) |
|
{ |
|
histogram_sub_simd( &h_fine[16*(n*(16*c+k)+MAX(luc[c][k]-2*r-1,0))], H[c].fine[k] ); |
|
histogram_add_simd( &h_fine[16*(n*(16*c+k)+MIN(luc[c][k],n-1))], H[c].fine[k] ); |
|
} |
|
} |
|
|
|
histogram_sub_simd( &h_coarse[16*(n*c+MAX(j-r,0))], H[c].coarse ); |
|
|
|
/* Find median in segment */ |
|
segment = H[c].fine[k]; |
|
for ( b = 0; b < 16 ; b++ ) |
|
{ |
|
sum += segment[b]; |
|
if ( sum > t ) |
|
{ |
|
dst[dstep*i+cn*j+c] = (uchar)(16*k + b); |
|
break; |
|
} |
|
} |
|
assert( b < 16 ); |
|
} |
|
} |
|
else |
|
#endif |
|
{ |
|
for( j = 0; j < 2*r; ++j ) |
|
histogram_add( &h_coarse[16*(n*c+j)], H[c].coarse ); |
|
|
|
for( j = r; j < n-r; j++ ) |
|
{ |
|
int t = 2*r*r + 2*r, b, sum = 0; |
|
HT* segment; |
|
|
|
histogram_add( &h_coarse[16*(n*c + std::min(j+r,n-1))], H[c].coarse ); |
|
|
|
// Find median at coarse level |
|
for ( k = 0; k < 16 ; ++k ) |
|
{ |
|
sum += H[c].coarse[k]; |
|
if ( sum > t ) |
|
{ |
|
sum -= H[c].coarse[k]; |
|
break; |
|
} |
|
} |
|
assert( k < 16 ); |
|
|
|
/* Update corresponding histogram segment */ |
|
if ( luc[c][k] <= j-r ) |
|
{ |
|
memset( &H[c].fine[k], 0, 16 * sizeof(HT) ); |
|
for ( luc[c][k] = j-r; luc[c][k] < MIN(j+r+1,n); ++luc[c][k] ) |
|
histogram_add( &h_fine[16*(n*(16*c+k)+luc[c][k])], H[c].fine[k] ); |
|
|
|
if ( luc[c][k] < j+r+1 ) |
|
{ |
|
histogram_muladd( j+r+1 - n, &h_fine[16*(n*(16*c+k)+(n-1))], &H[c].fine[k][0] ); |
|
luc[c][k] = (HT)(j+r+1); |
|
} |
|
} |
|
else |
|
{ |
|
for ( ; luc[c][k] < j+r+1; ++luc[c][k] ) |
|
{ |
|
histogram_sub( &h_fine[16*(n*(16*c+k)+MAX(luc[c][k]-2*r-1,0))], H[c].fine[k] ); |
|
histogram_add( &h_fine[16*(n*(16*c+k)+MIN(luc[c][k],n-1))], H[c].fine[k] ); |
|
} |
|
} |
|
|
|
histogram_sub( &h_coarse[16*(n*c+MAX(j-r,0))], H[c].coarse ); |
|
|
|
/* Find median in segment */ |
|
segment = H[c].fine[k]; |
|
for ( b = 0; b < 16 ; b++ ) |
|
{ |
|
sum += segment[b]; |
|
if ( sum > t ) |
|
{ |
|
dst[dstep*i+cn*j+c] = (uchar)(16*k + b); |
|
break; |
|
} |
|
} |
|
assert( b < 16 ); |
|
} |
|
} |
|
} |
|
} |
|
} |
|
|
|
#undef HOP |
|
#undef COP |
|
} |
|
|
|
|
|
#if _MSC_VER >= 1200 |
|
#pragma warning( default: 4244 ) |
|
#endif |
|
|
|
static void |
|
medianBlur_8u_Om( const Mat& _src, Mat& _dst, int m ) |
|
{ |
|
#define N 16 |
|
int zone0[4][N]; |
|
int zone1[4][N*N]; |
|
int x, y; |
|
int n2 = m*m/2; |
|
Size size = _dst.size(); |
|
const uchar* src = _src.data; |
|
uchar* dst = _dst.data; |
|
int src_step = (int)_src.step, dst_step = (int)_dst.step; |
|
int cn = _src.channels(); |
|
const uchar* src_max = src + size.height*src_step; |
|
|
|
#define UPDATE_ACC01( pix, cn, op ) \ |
|
{ \ |
|
int p = (pix); \ |
|
zone1[cn][p] op; \ |
|
zone0[cn][p >> 4] op; \ |
|
} |
|
|
|
//CV_Assert( size.height >= nx && size.width >= nx ); |
|
for( x = 0; x < size.width; x++, src += cn, dst += cn ) |
|
{ |
|
uchar* dst_cur = dst; |
|
const uchar* src_top = src; |
|
const uchar* src_bottom = src; |
|
int k, c; |
|
int src_step1 = src_step, dst_step1 = dst_step; |
|
|
|
if( x % 2 != 0 ) |
|
{ |
|
src_bottom = src_top += src_step*(size.height-1); |
|
dst_cur += dst_step*(size.height-1); |
|
src_step1 = -src_step1; |
|
dst_step1 = -dst_step1; |
|
} |
|
|
|
// init accumulator |
|
memset( zone0, 0, sizeof(zone0[0])*cn ); |
|
memset( zone1, 0, sizeof(zone1[0])*cn ); |
|
|
|
for( y = 0; y <= m/2; y++ ) |
|
{ |
|
for( c = 0; c < cn; c++ ) |
|
{ |
|
if( y > 0 ) |
|
{ |
|
for( k = 0; k < m*cn; k += cn ) |
|
UPDATE_ACC01( src_bottom[k+c], c, ++ ); |
|
} |
|
else |
|
{ |
|
for( k = 0; k < m*cn; k += cn ) |
|
UPDATE_ACC01( src_bottom[k+c], c, += m/2+1 ); |
|
} |
|
} |
|
|
|
if( (src_step1 > 0 && y < size.height-1) || |
|
(src_step1 < 0 && size.height-y-1 > 0) ) |
|
src_bottom += src_step1; |
|
} |
|
|
|
for( y = 0; y < size.height; y++, dst_cur += dst_step1 ) |
|
{ |
|
// find median |
|
for( c = 0; c < cn; c++ ) |
|
{ |
|
int s = 0; |
|
for( k = 0; ; k++ ) |
|
{ |
|
int t = s + zone0[c][k]; |
|
if( t > n2 ) break; |
|
s = t; |
|
} |
|
|
|
for( k *= N; ;k++ ) |
|
{ |
|
s += zone1[c][k]; |
|
if( s > n2 ) break; |
|
} |
|
|
|
dst_cur[c] = (uchar)k; |
|
} |
|
|
|
if( y+1 == size.height ) |
|
break; |
|
|
|
if( cn == 1 ) |
|
{ |
|
for( k = 0; k < m; k++ ) |
|
{ |
|
int p = src_top[k]; |
|
int q = src_bottom[k]; |
|
zone1[0][p]--; |
|
zone0[0][p>>4]--; |
|
zone1[0][q]++; |
|
zone0[0][q>>4]++; |
|
} |
|
} |
|
else if( cn == 3 ) |
|
{ |
|
for( k = 0; k < m*3; k += 3 ) |
|
{ |
|
UPDATE_ACC01( src_top[k], 0, -- ); |
|
UPDATE_ACC01( src_top[k+1], 1, -- ); |
|
UPDATE_ACC01( src_top[k+2], 2, -- ); |
|
|
|
UPDATE_ACC01( src_bottom[k], 0, ++ ); |
|
UPDATE_ACC01( src_bottom[k+1], 1, ++ ); |
|
UPDATE_ACC01( src_bottom[k+2], 2, ++ ); |
|
} |
|
} |
|
else |
|
{ |
|
assert( cn == 4 ); |
|
for( k = 0; k < m*4; k += 4 ) |
|
{ |
|
UPDATE_ACC01( src_top[k], 0, -- ); |
|
UPDATE_ACC01( src_top[k+1], 1, -- ); |
|
UPDATE_ACC01( src_top[k+2], 2, -- ); |
|
UPDATE_ACC01( src_top[k+3], 3, -- ); |
|
|
|
UPDATE_ACC01( src_bottom[k], 0, ++ ); |
|
UPDATE_ACC01( src_bottom[k+1], 1, ++ ); |
|
UPDATE_ACC01( src_bottom[k+2], 2, ++ ); |
|
UPDATE_ACC01( src_bottom[k+3], 3, ++ ); |
|
} |
|
} |
|
|
|
if( (src_step1 > 0 && src_bottom + src_step1 < src_max) || |
|
(src_step1 < 0 && src_bottom + src_step1 >= src) ) |
|
src_bottom += src_step1; |
|
|
|
if( y >= m/2 ) |
|
src_top += src_step1; |
|
} |
|
} |
|
#undef N |
|
#undef UPDATE_ACC |
|
} |
|
|
|
|
|
struct MinMax8u |
|
{ |
|
typedef uchar value_type; |
|
typedef int arg_type; |
|
enum { SIZE = 1 }; |
|
arg_type load(const uchar* ptr) { return *ptr; } |
|
void store(uchar* ptr, arg_type val) { *ptr = (uchar)val; } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
int t = CV_FAST_CAST_8U(a - b); |
|
b += t; a -= t; |
|
} |
|
}; |
|
|
|
struct MinMax16u |
|
{ |
|
typedef ushort value_type; |
|
typedef int arg_type; |
|
enum { SIZE = 1 }; |
|
arg_type load(const ushort* ptr) { return *ptr; } |
|
void store(ushort* ptr, arg_type val) { *ptr = (ushort)val; } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = std::min(a, b); |
|
b = std::max(b, t); |
|
} |
|
}; |
|
|
|
struct MinMax16s |
|
{ |
|
typedef short value_type; |
|
typedef int arg_type; |
|
enum { SIZE = 1 }; |
|
arg_type load(const short* ptr) { return *ptr; } |
|
void store(short* ptr, arg_type val) { *ptr = (short)val; } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = std::min(a, b); |
|
b = std::max(b, t); |
|
} |
|
}; |
|
|
|
struct MinMax32f |
|
{ |
|
typedef float value_type; |
|
typedef float arg_type; |
|
enum { SIZE = 1 }; |
|
arg_type load(const float* ptr) { return *ptr; } |
|
void store(float* ptr, arg_type val) { *ptr = val; } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = std::min(a, b); |
|
b = std::max(b, t); |
|
} |
|
}; |
|
|
|
#if CV_SSE2 |
|
|
|
struct MinMaxVec8u |
|
{ |
|
typedef uchar value_type; |
|
typedef __m128i arg_type; |
|
enum { SIZE = 16 }; |
|
arg_type load(const uchar* ptr) { return _mm_loadu_si128((const __m128i*)ptr); } |
|
void store(uchar* ptr, arg_type val) { _mm_storeu_si128((__m128i*)ptr, val); } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = _mm_min_epu8(a, b); |
|
b = _mm_max_epu8(b, t); |
|
} |
|
}; |
|
|
|
|
|
struct MinMaxVec16u |
|
{ |
|
typedef ushort value_type; |
|
typedef __m128i arg_type; |
|
enum { SIZE = 8 }; |
|
arg_type load(const ushort* ptr) { return _mm_loadu_si128((const __m128i*)ptr); } |
|
void store(ushort* ptr, arg_type val) { _mm_storeu_si128((__m128i*)ptr, val); } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = _mm_subs_epu16(a, b); |
|
a = _mm_subs_epu16(a, t); |
|
b = _mm_adds_epu16(b, t); |
|
} |
|
}; |
|
|
|
|
|
struct MinMaxVec16s |
|
{ |
|
typedef short value_type; |
|
typedef __m128i arg_type; |
|
enum { SIZE = 8 }; |
|
arg_type load(const short* ptr) { return _mm_loadu_si128((const __m128i*)ptr); } |
|
void store(short* ptr, arg_type val) { _mm_storeu_si128((__m128i*)ptr, val); } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = _mm_min_epi16(a, b); |
|
b = _mm_max_epi16(b, t); |
|
} |
|
}; |
|
|
|
|
|
struct MinMaxVec32f |
|
{ |
|
typedef float value_type; |
|
typedef __m128 arg_type; |
|
enum { SIZE = 4 }; |
|
arg_type load(const float* ptr) { return _mm_loadu_ps(ptr); } |
|
void store(float* ptr, arg_type val) { _mm_storeu_ps(ptr, val); } |
|
void operator()(arg_type& a, arg_type& b) const |
|
{ |
|
arg_type t = a; |
|
a = _mm_min_ps(a, b); |
|
b = _mm_max_ps(b, t); |
|
} |
|
}; |
|
|
|
|
|
#else |
|
|
|
typedef MinMax8u MinMaxVec8u; |
|
typedef MinMax16u MinMaxVec16u; |
|
typedef MinMax16s MinMaxVec16s; |
|
typedef MinMax32f MinMaxVec32f; |
|
|
|
#endif |
|
|
|
template<class Op, class VecOp> |
|
static void |
|
medianBlur_SortNet( const Mat& _src, Mat& _dst, int m ) |
|
{ |
|
typedef typename Op::value_type T; |
|
typedef typename Op::arg_type WT; |
|
typedef typename VecOp::arg_type VT; |
|
|
|
const T* src = (const T*)_src.data; |
|
T* dst = (T*)_dst.data; |
|
int sstep = (int)(_src.step/sizeof(T)); |
|
int dstep = (int)(_dst.step/sizeof(T)); |
|
Size size = _dst.size(); |
|
int i, j, k, cn = _src.channels(); |
|
Op op; |
|
VecOp vop; |
|
volatile bool useSIMD = checkHardwareSupport(CV_CPU_SSE2); |
|
|
|
if( m == 3 ) |
|
{ |
|
if( size.width == 1 || size.height == 1 ) |
|
{ |
|
int len = size.width + size.height - 1; |
|
int sdelta = size.height == 1 ? cn : sstep; |
|
int sdelta0 = size.height == 1 ? 0 : sstep - cn; |
|
int ddelta = size.height == 1 ? cn : dstep; |
|
|
|
for( i = 0; i < len; i++, src += sdelta0, dst += ddelta ) |
|
for( j = 0; j < cn; j++, src++ ) |
|
{ |
|
WT p0 = src[i > 0 ? -sdelta : 0]; |
|
WT p1 = src[0]; |
|
WT p2 = src[i < len - 1 ? sdelta : 0]; |
|
|
|
op(p0, p1); op(p1, p2); op(p0, p1); |
|
dst[j] = (T)p1; |
|
} |
|
return; |
|
} |
|
|
|
size.width *= cn; |
|
for( i = 0; i < size.height; i++, dst += dstep ) |
|
{ |
|
const T* row0 = src + std::max(i - 1, 0)*sstep; |
|
const T* row1 = src + i*sstep; |
|
const T* row2 = src + std::min(i + 1, size.height-1)*sstep; |
|
int limit = useSIMD ? cn : size.width; |
|
|
|
for(j = 0;; ) |
|
{ |
|
for( ; j < limit; j++ ) |
|
{ |
|
int j0 = j >= cn ? j - cn : j; |
|
int j2 = j < size.width - cn ? j + cn : j; |
|
WT p0 = row0[j0], p1 = row0[j], p2 = row0[j2]; |
|
WT p3 = row1[j0], p4 = row1[j], p5 = row1[j2]; |
|
WT p6 = row2[j0], p7 = row2[j], p8 = row2[j2]; |
|
|
|
op(p1, p2); op(p4, p5); op(p7, p8); op(p0, p1); |
|
op(p3, p4); op(p6, p7); op(p1, p2); op(p4, p5); |
|
op(p7, p8); op(p0, p3); op(p5, p8); op(p4, p7); |
|
op(p3, p6); op(p1, p4); op(p2, p5); op(p4, p7); |
|
op(p4, p2); op(p6, p4); op(p4, p2); |
|
dst[j] = (T)p4; |
|
} |
|
|
|
if( limit == size.width ) |
|
break; |
|
|
|
for( ; j <= size.width - VecOp::SIZE - cn; j += VecOp::SIZE ) |
|
{ |
|
VT p0 = vop.load(row0+j-cn), p1 = vop.load(row0+j), p2 = vop.load(row0+j+cn); |
|
VT p3 = vop.load(row1+j-cn), p4 = vop.load(row1+j), p5 = vop.load(row1+j+cn); |
|
VT p6 = vop.load(row2+j-cn), p7 = vop.load(row2+j), p8 = vop.load(row2+j+cn); |
|
|
|
vop(p1, p2); vop(p4, p5); vop(p7, p8); vop(p0, p1); |
|
vop(p3, p4); vop(p6, p7); vop(p1, p2); vop(p4, p5); |
|
vop(p7, p8); vop(p0, p3); vop(p5, p8); vop(p4, p7); |
|
vop(p3, p6); vop(p1, p4); vop(p2, p5); vop(p4, p7); |
|
vop(p4, p2); vop(p6, p4); vop(p4, p2); |
|
vop.store(dst+j, p4); |
|
} |
|
|
|
limit = size.width; |
|
} |
|
} |
|
} |
|
else if( m == 5 ) |
|
{ |
|
if( size.width == 1 || size.height == 1 ) |
|
{ |
|
int len = size.width + size.height - 1; |
|
int sdelta = size.height == 1 ? cn : sstep; |
|
int sdelta0 = size.height == 1 ? 0 : sstep - cn; |
|
int ddelta = size.height == 1 ? cn : dstep; |
|
|
|
for( i = 0; i < len; i++, src += sdelta0, dst += ddelta ) |
|
for( j = 0; j < cn; j++, src++ ) |
|
{ |
|
int i1 = i > 0 ? -sdelta : 0; |
|
int i0 = i > 1 ? -sdelta*2 : i1; |
|
int i3 = i < len-1 ? sdelta : 0; |
|
int i4 = i < len-2 ? sdelta*2 : i3; |
|
WT p0 = src[i0], p1 = src[i1], p2 = src[0], p3 = src[i3], p4 = src[i4]; |
|
|
|
op(p0, p1); op(p3, p4); op(p2, p3); op(p3, p4); op(p0, p2); |
|
op(p2, p4); op(p1, p3); op(p1, p2); |
|
dst[j] = (T)p2; |
|
} |
|
return; |
|
} |
|
|
|
size.width *= cn; |
|
for( i = 0; i < size.height; i++, dst += dstep ) |
|
{ |
|
const T* row[5]; |
|
row[0] = src + std::max(i - 2, 0)*sstep; |
|
row[1] = src + std::max(i - 1, 0)*sstep; |
|
row[2] = src + i*sstep; |
|
row[3] = src + std::min(i + 1, size.height-1)*sstep; |
|
row[4] = src + std::min(i + 2, size.height-1)*sstep; |
|
int limit = useSIMD ? cn*2 : size.width; |
|
|
|
for(j = 0;; ) |
|
{ |
|
for( ; j < limit; j++ ) |
|
{ |
|
WT p[25]; |
|
int j1 = j >= cn ? j - cn : j; |
|
int j0 = j >= cn*2 ? j - cn*2 : j1; |
|
int j3 = j < size.width - cn ? j + cn : j; |
|
int j4 = j < size.width - cn*2 ? j + cn*2 : j3; |
|
for( k = 0; k < 5; k++ ) |
|
{ |
|
const T* rowk = row[k]; |
|
p[k*5] = rowk[j0]; p[k*5+1] = rowk[j1]; |
|
p[k*5+2] = rowk[j]; p[k*5+3] = rowk[j3]; |
|
p[k*5+4] = rowk[j4]; |
|
} |
|
|
|
op(p[1], p[2]); op(p[0], p[1]); op(p[1], p[2]); op(p[4], p[5]); op(p[3], p[4]); |
|
op(p[4], p[5]); op(p[0], p[3]); op(p[2], p[5]); op(p[2], p[3]); op(p[1], p[4]); |
|
op(p[1], p[2]); op(p[3], p[4]); op(p[7], p[8]); op(p[6], p[7]); op(p[7], p[8]); |
|
op(p[10], p[11]); op(p[9], p[10]); op(p[10], p[11]); op(p[6], p[9]); op(p[8], p[11]); |
|
op(p[8], p[9]); op(p[7], p[10]); op(p[7], p[8]); op(p[9], p[10]); op(p[0], p[6]); |
|
op(p[4], p[10]); op(p[4], p[6]); op(p[2], p[8]); op(p[2], p[4]); op(p[6], p[8]); |
|
op(p[1], p[7]); op(p[5], p[11]); op(p[5], p[7]); op(p[3], p[9]); op(p[3], p[5]); |
|
op(p[7], p[9]); op(p[1], p[2]); op(p[3], p[4]); op(p[5], p[6]); op(p[7], p[8]); |
|
op(p[9], p[10]); op(p[13], p[14]); op(p[12], p[13]); op(p[13], p[14]); op(p[16], p[17]); |
|
op(p[15], p[16]); op(p[16], p[17]); op(p[12], p[15]); op(p[14], p[17]); op(p[14], p[15]); |
|
op(p[13], p[16]); op(p[13], p[14]); op(p[15], p[16]); op(p[19], p[20]); op(p[18], p[19]); |
|
op(p[19], p[20]); op(p[21], p[22]); op(p[23], p[24]); op(p[21], p[23]); op(p[22], p[24]); |
|
op(p[22], p[23]); op(p[18], p[21]); op(p[20], p[23]); op(p[20], p[21]); op(p[19], p[22]); |
|
op(p[22], p[24]); op(p[19], p[20]); op(p[21], p[22]); op(p[23], p[24]); op(p[12], p[18]); |
|
op(p[16], p[22]); op(p[16], p[18]); op(p[14], p[20]); op(p[20], p[24]); op(p[14], p[16]); |
|
op(p[18], p[20]); op(p[22], p[24]); op(p[13], p[19]); op(p[17], p[23]); op(p[17], p[19]); |
|
op(p[15], p[21]); op(p[15], p[17]); op(p[19], p[21]); op(p[13], p[14]); op(p[15], p[16]); |
|
op(p[17], p[18]); op(p[19], p[20]); op(p[21], p[22]); op(p[23], p[24]); op(p[0], p[12]); |
|
op(p[8], p[20]); op(p[8], p[12]); op(p[4], p[16]); op(p[16], p[24]); op(p[12], p[16]); |
|
op(p[2], p[14]); op(p[10], p[22]); op(p[10], p[14]); op(p[6], p[18]); op(p[6], p[10]); |
|
op(p[10], p[12]); op(p[1], p[13]); op(p[9], p[21]); op(p[9], p[13]); op(p[5], p[17]); |
|
op(p[13], p[17]); op(p[3], p[15]); op(p[11], p[23]); op(p[11], p[15]); op(p[7], p[19]); |
|
op(p[7], p[11]); op(p[11], p[13]); op(p[11], p[12]); |
|
dst[j] = (T)p[12]; |
|
} |
|
|
|
if( limit == size.width ) |
|
break; |
|
|
|
for( ; j <= size.width - VecOp::SIZE - cn*2; j += VecOp::SIZE ) |
|
{ |
|
VT p[25]; |
|
for( k = 0; k < 5; k++ ) |
|
{ |
|
const T* rowk = row[k]; |
|
p[k*5] = vop.load(rowk+j-cn*2); p[k*5+1] = vop.load(rowk+j-cn); |
|
p[k*5+2] = vop.load(rowk+j); p[k*5+3] = vop.load(rowk+j+cn); |
|
p[k*5+4] = vop.load(rowk+j+cn*2); |
|
} |
|
|
|
vop(p[1], p[2]); vop(p[0], p[1]); vop(p[1], p[2]); vop(p[4], p[5]); vop(p[3], p[4]); |
|
vop(p[4], p[5]); vop(p[0], p[3]); vop(p[2], p[5]); vop(p[2], p[3]); vop(p[1], p[4]); |
|
vop(p[1], p[2]); vop(p[3], p[4]); vop(p[7], p[8]); vop(p[6], p[7]); vop(p[7], p[8]); |
|
vop(p[10], p[11]); vop(p[9], p[10]); vop(p[10], p[11]); vop(p[6], p[9]); vop(p[8], p[11]); |
|
vop(p[8], p[9]); vop(p[7], p[10]); vop(p[7], p[8]); vop(p[9], p[10]); vop(p[0], p[6]); |
|
vop(p[4], p[10]); vop(p[4], p[6]); vop(p[2], p[8]); vop(p[2], p[4]); vop(p[6], p[8]); |
|
vop(p[1], p[7]); vop(p[5], p[11]); vop(p[5], p[7]); vop(p[3], p[9]); vop(p[3], p[5]); |
|
vop(p[7], p[9]); vop(p[1], p[2]); vop(p[3], p[4]); vop(p[5], p[6]); vop(p[7], p[8]); |
|
vop(p[9], p[10]); vop(p[13], p[14]); vop(p[12], p[13]); vop(p[13], p[14]); vop(p[16], p[17]); |
|
vop(p[15], p[16]); vop(p[16], p[17]); vop(p[12], p[15]); vop(p[14], p[17]); vop(p[14], p[15]); |
|
vop(p[13], p[16]); vop(p[13], p[14]); vop(p[15], p[16]); vop(p[19], p[20]); vop(p[18], p[19]); |
|
vop(p[19], p[20]); vop(p[21], p[22]); vop(p[23], p[24]); vop(p[21], p[23]); vop(p[22], p[24]); |
|
vop(p[22], p[23]); vop(p[18], p[21]); vop(p[20], p[23]); vop(p[20], p[21]); vop(p[19], p[22]); |
|
vop(p[22], p[24]); vop(p[19], p[20]); vop(p[21], p[22]); vop(p[23], p[24]); vop(p[12], p[18]); |
|
vop(p[16], p[22]); vop(p[16], p[18]); vop(p[14], p[20]); vop(p[20], p[24]); vop(p[14], p[16]); |
|
vop(p[18], p[20]); vop(p[22], p[24]); vop(p[13], p[19]); vop(p[17], p[23]); vop(p[17], p[19]); |
|
vop(p[15], p[21]); vop(p[15], p[17]); vop(p[19], p[21]); vop(p[13], p[14]); vop(p[15], p[16]); |
|
vop(p[17], p[18]); vop(p[19], p[20]); vop(p[21], p[22]); vop(p[23], p[24]); vop(p[0], p[12]); |
|
vop(p[8], p[20]); vop(p[8], p[12]); vop(p[4], p[16]); vop(p[16], p[24]); vop(p[12], p[16]); |
|
vop(p[2], p[14]); vop(p[10], p[22]); vop(p[10], p[14]); vop(p[6], p[18]); vop(p[6], p[10]); |
|
vop(p[10], p[12]); vop(p[1], p[13]); vop(p[9], p[21]); vop(p[9], p[13]); vop(p[5], p[17]); |
|
vop(p[13], p[17]); vop(p[3], p[15]); vop(p[11], p[23]); vop(p[11], p[15]); vop(p[7], p[19]); |
|
vop(p[7], p[11]); vop(p[11], p[13]); vop(p[11], p[12]); |
|
vop.store(dst+j, p[12]); |
|
} |
|
|
|
limit = size.width; |
|
} |
|
} |
|
} |
|
} |
|
|
|
|
|
void medianBlur( const Mat& src0, Mat& dst, int ksize ) |
|
{ |
|
if( ksize <= 1 ) |
|
{ |
|
src0.copyTo(dst); |
|
return; |
|
} |
|
|
|
CV_Assert( ksize % 2 == 1 ); |
|
|
|
Size size = src0.size(); |
|
int cn = src0.channels(); |
|
bool useSortNet = ksize == 3 || (ksize == 5 |
|
#if !CV_SSE2 |
|
&& src0.depth() > CV_8U |
|
#endif |
|
); |
|
|
|
dst.create( src0.size(), src0.type() ); |
|
Mat src; |
|
if( useSortNet ) |
|
{ |
|
if( dst.data != src0.data ) |
|
src = src0; |
|
else |
|
src0.copyTo(src); |
|
} |
|
else |
|
cv::copyMakeBorder( src0, src, 0, 0, ksize/2, ksize/2, BORDER_REPLICATE ); |
|
|
|
if( useSortNet ) |
|
{ |
|
if( src.depth() == CV_8U ) |
|
medianBlur_SortNet<MinMax8u, MinMaxVec8u>( src, dst, ksize ); |
|
else if( src.depth() == CV_16U ) |
|
medianBlur_SortNet<MinMax16u, MinMaxVec16u>( src, dst, ksize ); |
|
else if( src.depth() == CV_16S ) |
|
medianBlur_SortNet<MinMax16s, MinMaxVec16s>( src, dst, ksize ); |
|
else if( src.depth() == CV_32F ) |
|
medianBlur_SortNet<MinMax32f, MinMaxVec32f>( src, dst, ksize ); |
|
else |
|
CV_Error(CV_StsUnsupportedFormat, ""); |
|
return; |
|
} |
|
|
|
CV_Assert( src.depth() == CV_8U && (cn == 1 || cn == 3 || cn == 4) ); |
|
|
|
double img_size_mp = (double)(size.width*size.height)/(1 << 20); |
|
if( ksize <= 3 + (img_size_mp < 1 ? 12 : img_size_mp < 4 ? 6 : 2)*(MEDIAN_HAVE_SIMD && checkHardwareSupport(CV_CPU_SSE2) ? 1 : 3)) |
|
medianBlur_8u_Om( src, dst, ksize ); |
|
else |
|
medianBlur_8u_O1( src, dst, ksize ); |
|
} |
|
|
|
/****************************************************************************************\ |
|
Bilateral Filtering |
|
\****************************************************************************************/ |
|
|
|
static void |
|
bilateralFilter_8u( const Mat& src, Mat& dst, int d, |
|
double sigma_color, double sigma_space, |
|
int borderType ) |
|
{ |
|
double gauss_color_coeff = -0.5/(sigma_color*sigma_color); |
|
double gauss_space_coeff = -0.5/(sigma_space*sigma_space); |
|
int cn = src.channels(); |
|
int i, j, k, maxk, radius; |
|
Size size = src.size(); |
|
|
|
CV_Assert( (src.type() == CV_8UC1 || src.type() == CV_8UC3) && |
|
src.type() == dst.type() && src.size() == dst.size() && |
|
src.data != dst.data ); |
|
|
|
if( sigma_color <= 0 ) |
|
sigma_color = 1; |
|
if( sigma_space <= 0 ) |
|
sigma_space = 1; |
|
|
|
if( d <= 0 ) |
|
radius = cvRound(sigma_space*1.5); |
|
else |
|
radius = d/2; |
|
radius = MAX(radius, 1); |
|
d = radius*2 + 1; |
|
|
|
Mat temp; |
|
copyMakeBorder( src, temp, radius, radius, radius, radius, borderType ); |
|
|
|
vector<float> _color_weight(cn*256); |
|
vector<float> _space_weight(d*d); |
|
vector<int> _space_ofs(d*d); |
|
float* color_weight = &_color_weight[0]; |
|
float* space_weight = &_space_weight[0]; |
|
int* space_ofs = &_space_ofs[0]; |
|
|
|
// initialize color-related bilateral filter coefficients |
|
for( i = 0; i < 256*cn; i++ ) |
|
color_weight[i] = (float)std::exp(i*i*gauss_color_coeff); |
|
|
|
// initialize space-related bilateral filter coefficients |
|
for( i = -radius, maxk = 0; i <= radius; i++ ) |
|
for( j = -radius; j <= radius; j++ ) |
|
{ |
|
double r = std::sqrt((double)i*i + (double)j*j); |
|
if( r > radius ) |
|
continue; |
|
space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff); |
|
space_ofs[maxk++] = (int)(i*temp.step + j*cn); |
|
} |
|
|
|
for( i = 0; i < size.height; i++ ) |
|
{ |
|
const uchar* sptr = temp.data + (i+radius)*temp.step + radius*cn; |
|
uchar* dptr = dst.data + i*dst.step; |
|
|
|
if( cn == 1 ) |
|
{ |
|
for( j = 0; j < size.width; j++ ) |
|
{ |
|
float sum = 0, wsum = 0; |
|
int val0 = sptr[j]; |
|
for( k = 0; k < maxk; k++ ) |
|
{ |
|
int val = sptr[j + space_ofs[k]]; |
|
float w = space_weight[k]*color_weight[std::abs(val - val0)]; |
|
sum += val*w; |
|
wsum += w; |
|
} |
|
// overflow is not possible here => there is no need to use CV_CAST_8U |
|
dptr[j] = (uchar)cvRound(sum/wsum); |
|
} |
|
} |
|
else |
|
{ |
|
assert( cn == 3 ); |
|
for( j = 0; j < size.width*3; j += 3 ) |
|
{ |
|
float sum_b = 0, sum_g = 0, sum_r = 0, wsum = 0; |
|
int b0 = sptr[j], g0 = sptr[j+1], r0 = sptr[j+2]; |
|
for( k = 0; k < maxk; k++ ) |
|
{ |
|
const uchar* sptr_k = sptr + j + space_ofs[k]; |
|
int b = sptr_k[0], g = sptr_k[1], r = sptr_k[2]; |
|
float w = space_weight[k]*color_weight[std::abs(b - b0) + |
|
std::abs(g - g0) + std::abs(r - r0)]; |
|
sum_b += b*w; sum_g += g*w; sum_r += r*w; |
|
wsum += w; |
|
} |
|
wsum = 1.f/wsum; |
|
b0 = cvRound(sum_b*wsum); |
|
g0 = cvRound(sum_g*wsum); |
|
r0 = cvRound(sum_r*wsum); |
|
dptr[j] = (uchar)b0; dptr[j+1] = (uchar)g0; dptr[j+2] = (uchar)r0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
|
|
static void |
|
bilateralFilter_32f( const Mat& src, Mat& dst, int d, |
|
double sigma_color, double sigma_space, |
|
int borderType ) |
|
{ |
|
double gauss_color_coeff = -0.5/(sigma_color*sigma_color); |
|
double gauss_space_coeff = -0.5/(sigma_space*sigma_space); |
|
int cn = src.channels(); |
|
int i, j, k, maxk, radius; |
|
double minValSrc=-1, maxValSrc=1; |
|
const int kExpNumBinsPerChannel = 1 << 12; |
|
int kExpNumBins = 0; |
|
float lastExpVal = 1.f; |
|
float len, scale_index; |
|
Size size = src.size(); |
|
|
|
CV_Assert( (src.type() == CV_32FC1 || src.type() == CV_32FC3) && |
|
src.type() == dst.type() && src.size() == dst.size() && |
|
src.data != dst.data ); |
|
|
|
if( sigma_color <= 0 ) |
|
sigma_color = 1; |
|
if( sigma_space <= 0 ) |
|
sigma_space = 1; |
|
|
|
if( d <= 0 ) |
|
radius = cvRound(sigma_space*1.5); |
|
else |
|
radius = d/2; |
|
radius = MAX(radius, 1); |
|
d = radius*2 + 1; |
|
// compute the min/max range for the input image (even if multichannel) |
|
|
|
minMaxLoc( src.reshape(1), &minValSrc, &maxValSrc ); |
|
|
|
// temporary copy of the image with borders for easy processing |
|
Mat temp; |
|
copyMakeBorder( src, temp, radius, radius, radius, radius, borderType ); |
|
|
|
// allocate lookup tables |
|
vector<float> _space_weight(d*d); |
|
vector<int> _space_ofs(d*d); |
|
float* space_weight = &_space_weight[0]; |
|
int* space_ofs = &_space_ofs[0]; |
|
|
|
// assign a length which is slightly more than needed |
|
len = (float)(maxValSrc - minValSrc) * cn; |
|
kExpNumBins = kExpNumBinsPerChannel * cn; |
|
vector<float> _expLUT(kExpNumBins+2); |
|
float* expLUT = &_expLUT[0]; |
|
|
|
scale_index = kExpNumBins/len; |
|
|
|
// initialize the exp LUT |
|
for( i = 0; i < kExpNumBins+2; i++ ) |
|
{ |
|
if( lastExpVal > 0.f ) |
|
{ |
|
double val = i / scale_index; |
|
expLUT[i] = (float)std::exp(val * val * gauss_color_coeff); |
|
lastExpVal = expLUT[i]; |
|
} |
|
else |
|
expLUT[i] = 0.f; |
|
} |
|
|
|
// initialize space-related bilateral filter coefficients |
|
for( i = -radius, maxk = 0; i <= radius; i++ ) |
|
for( j = -radius; j <= radius; j++ ) |
|
{ |
|
double r = std::sqrt((double)i*i + (double)j*j); |
|
if( r > radius ) |
|
continue; |
|
space_weight[maxk] = (float)std::exp(r*r*gauss_space_coeff); |
|
space_ofs[maxk++] = (int)(i*(temp.step/sizeof(float)) + j*cn); |
|
} |
|
|
|
for( i = 0; i < size.height; i++ ) |
|
{ |
|
const float* sptr = (const float*)(temp.data + (i+radius)*temp.step) + radius*cn; |
|
float* dptr = (float*)(dst.data + i*dst.step); |
|
|
|
if( cn == 1 ) |
|
{ |
|
for( j = 0; j < size.width; j++ ) |
|
{ |
|
float sum = 0, wsum = 0; |
|
float val0 = sptr[j]; |
|
for( k = 0; k < maxk; k++ ) |
|
{ |
|
float val = sptr[j + space_ofs[k]]; |
|
float alpha = (float)(std::abs(val - val0)*scale_index); |
|
int idx = cvFloor(alpha); |
|
alpha -= idx; |
|
float w = space_weight[k]*(expLUT[idx] + alpha*(expLUT[idx+1] - expLUT[idx])); |
|
sum += val*w; |
|
wsum += w; |
|
} |
|
dptr[j] = (float)(sum/wsum); |
|
} |
|
} |
|
else |
|
{ |
|
assert( cn == 3 ); |
|
for( j = 0; j < size.width*3; j += 3 ) |
|
{ |
|
float sum_b = 0, sum_g = 0, sum_r = 0, wsum = 0; |
|
float b0 = sptr[j], g0 = sptr[j+1], r0 = sptr[j+2]; |
|
for( k = 0; k < maxk; k++ ) |
|
{ |
|
const float* sptr_k = sptr + j + space_ofs[k]; |
|
float b = sptr_k[0], g = sptr_k[1], r = sptr_k[2]; |
|
float alpha = (float)((std::abs(b - b0) + |
|
std::abs(g - g0) + std::abs(r - r0))*scale_index); |
|
int idx = cvFloor(alpha); |
|
alpha -= idx; |
|
float w = space_weight[k]*(expLUT[idx] + alpha*(expLUT[idx+1] - expLUT[idx])); |
|
sum_b += b*w; sum_g += g*w; sum_r += r*w; |
|
wsum += w; |
|
} |
|
wsum = 1.f/wsum; |
|
b0 = sum_b*wsum; |
|
g0 = sum_g*wsum; |
|
r0 = sum_r*wsum; |
|
dptr[j] = b0; dptr[j+1] = g0; dptr[j+2] = r0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
|
|
void bilateralFilter( const Mat& src, Mat& dst, int d, |
|
double sigmaColor, double sigmaSpace, |
|
int borderType ) |
|
{ |
|
dst.create( src.size(), src.type() ); |
|
if( src.depth() == CV_8U ) |
|
bilateralFilter_8u( src, dst, d, sigmaColor, sigmaSpace, borderType ); |
|
else if( src.depth() == CV_32F ) |
|
bilateralFilter_32f( src, dst, d, sigmaColor, sigmaSpace, borderType ); |
|
else |
|
CV_Error( CV_StsUnsupportedFormat, |
|
"Bilateral filtering is only implemented for 8u and 32f images" ); |
|
} |
|
|
|
} |
|
|
|
////////////////////////////////////////////////////////////////////////////////////////// |
|
|
|
CV_IMPL void |
|
cvSmooth( const void* srcarr, void* dstarr, int smooth_type, |
|
int param1, int param2, double param3, double param4 ) |
|
{ |
|
cv::Mat src = cv::cvarrToMat(srcarr), dst0 = cv::cvarrToMat(dstarr), dst = dst0; |
|
|
|
CV_Assert( dst.size() == src.size() && |
|
(smooth_type == CV_BLUR_NO_SCALE || dst.type() == src.type()) ); |
|
|
|
if( param2 <= 0 ) |
|
param2 = param1; |
|
|
|
if( smooth_type == CV_BLUR || smooth_type == CV_BLUR_NO_SCALE ) |
|
cv::boxFilter( src, dst, dst.depth(), cv::Size(param1, param2), cv::Point(-1,-1), |
|
smooth_type == CV_BLUR, cv::BORDER_REPLICATE ); |
|
else if( smooth_type == CV_GAUSSIAN ) |
|
cv::GaussianBlur( src, dst, cv::Size(param1, param2), param3, param4, cv::BORDER_REPLICATE ); |
|
else if( smooth_type == CV_MEDIAN ) |
|
cv::medianBlur( src, dst, param1 ); |
|
else |
|
cv::bilateralFilter( src, dst, param1, param3, param4, cv::BORDER_REPLICATE ); |
|
|
|
if( dst.data != dst0.data ) |
|
CV_Error( CV_StsUnmatchedFormats, "The destination image does not have the proper type" ); |
|
} |
|
|
|
/* End of file. */
|
|
|