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126 lines
4.8 KiB
126 lines
4.8 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) 2013, OpenCV Foundation, 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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#ifndef __OPENCV_DNN_LAYERS_IM2COL_HPP__ |
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#define __OPENCV_DNN_LAYERS_IM2COL_HPP__ |
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namespace cv |
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{ |
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namespace dnn |
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{ |
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template <typename Dtype> |
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void im2col_cpu(const Dtype* data_im, |
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int channels, int height, int width, |
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int kernel_h, int kernel_w, |
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int pad_h, int pad_w, |
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int stride_h, int stride_w, |
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Dtype* data_col) |
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{ |
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int height_col = (height + 2 * pad_h - kernel_h) / stride_h + 1; |
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int width_col = (width + 2 * pad_w - kernel_w) / stride_w + 1; |
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int channels_col = channels * kernel_h * kernel_w; |
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for (int c = 0; c < channels_col; ++c) { |
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int w_offset = c % kernel_w; |
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int h_offset = (c / kernel_w) % kernel_h; |
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int c_im = c / kernel_h / kernel_w; |
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for (int h = 0; h < height_col; ++h) { |
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for (int w = 0; w < width_col; ++w) { |
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int h_pad = h * stride_h - pad_h + h_offset; |
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int w_pad = w * stride_w - pad_w + w_offset; |
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if (h_pad >= 0 && h_pad < height && w_pad >= 0 && w_pad < width) |
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data_col[(c * height_col + h) * width_col + w] = |
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data_im[(c_im * height + h_pad) * width + w_pad]; |
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else |
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data_col[(c * height_col + h) * width_col + w] = 0; |
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} |
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} |
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} |
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} |
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template <typename Dtype> |
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void col2im_cpu(const Dtype* data_col, |
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int channels, int height, int width, |
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int patch_h, int patch_w, |
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int pad_h, int pad_w, |
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int stride_h, int stride_w, |
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Dtype* data_im) |
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{ |
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memset(data_im, 0, height * width * channels * sizeof(Dtype)); |
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int height_col = (height + 2 * pad_h - patch_h) / stride_h + 1; |
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int width_col = (width + 2 * pad_w - patch_w) / stride_w + 1; |
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int channels_col = channels * patch_h * patch_w; |
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for (int c = 0; c < channels_col; ++c) |
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{ |
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int w_offset = c % patch_w; |
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int h_offset = (c / patch_w) % patch_h; |
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int c_im = c / patch_h / patch_w; |
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for (int h = 0; h < height_col; ++h) |
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{ |
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for (int w = 0; w < width_col; ++w) |
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{ |
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int h_pad = h * stride_h - pad_h + h_offset; |
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int w_pad = w * stride_w - pad_w + w_offset; |
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if (h_pad >= 0 && h_pad < height && w_pad >= 0 && w_pad < width) |
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data_im[(c_im * height + h_pad) * width + w_pad] += |
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data_col[(c * height_col + h) * width_col + w]; |
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} |
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} |
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} |
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} |
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#ifdef HAVE_OPENCL |
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void im2col_ocl(UMat &img, |
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int channels, int height, int width, |
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int kernel_h, int kernel_w, |
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int pad_h, int pad_w, |
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int stride_h, int stride_w, |
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UMat &col); |
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#endif |
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} |
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} |
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#endif
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