Repository for OpenCV's extra modules
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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2014, Biagio Montesano, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include <opencv2/line_descriptor.hpp>
#include "opencv2/core/utility.hpp"
#include "opencv2/core/private.hpp"
#include <opencv2/imgproc.hpp>
#include <opencv2/features2d.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
using namespace cv;
static const char* keys =
{
"{@image_path1 | | Image path 1 }"
"{@image_path2 | | Image path 2 }"
};
static void help()
{
std::cout << "\nThis example shows the functionalities of lines extraction " <<
"and descriptors computation furnished by BinaryDescriptor class\n" <<
"Please, run this sample using a command in the form\n" <<
"./example_line_descriptor_compute_descriptors <path_to_input_image 1>"
<< "<path_to_input_image 2>" << std::endl;
}
int main( int argc, char** argv )
{
/* get parameters from comand line */
CommandLineParser parser( argc, argv, keys );
String image_path1 = parser.get<String>( 0 );
String image_path2 = parser.get<String>( 1 );
if(image_path1.empty() || image_path2.empty())
{
help();
return -1;
}
/* load image */
cv::Mat imageMat1 = imread(image_path1, 1);
cv::Mat imageMat2 = imread(image_path2, 1);
waitKey();
if(imageMat1.data == NULL || imageMat2.data == NULL)
{
std::cout << "Error, images could not be loaded. Please, check their path"
<< std::endl;
}
/* create binary masks */
cv::Mat mask1 = Mat::ones(imageMat1.size(), CV_8UC1);
cv::Mat mask2 = Mat::ones(imageMat2.size(), CV_8UC1);
/* create a pointer to a BinaryDescriptor object with default parameters */
Ptr<BinaryDescriptor> bd = BinaryDescriptor::createBinaryDescriptor();
/* compute lines */
std::vector<KeyLine> keylines1, keylines2;
bd->detect(imageMat1, keylines1, mask1);
bd->detect(imageMat2, keylines2, mask2);
/* compute descriptors */
cv::Mat descr1, descr2;
bd->compute(imageMat1, keylines1, descr1);
bd->compute(imageMat2, keylines2, descr2);
/* create a BinaryDescriptorMatcher object */
Ptr<BinaryDescriptorMatcher> bdm = BinaryDescriptorMatcher::createBinaryDescriptorMatcher();
/* require match */
std::vector<DMatch> matches;
bdm->match(descr1, descr2, matches);
/* plot matches */
cv::Mat outImg;
std::vector<char> mask (matches.size(), 1);
drawLineMatches(imageMat1, keylines1, imageMat2, keylines2, matches,
outImg, Scalar::all(-1), Scalar::all(-1), mask,
DrawLinesMatchesFlags::DEFAULT);
std::cout << "num dmatch " << matches.size() << std::endl;
imshow("Matches", outImg);
waitKey();
}