Matcher ported, first page od documentation written.

modules/line_descriptor/samples/matching.cpp

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+#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;
+
+}
+
+inline void writeMat(cv::Mat m, std::string name, int n)
+{
+    std::stringstream ss;
+    std::string s;
+    ss << n;
+    ss >> s;
+    std::string fileNameConf = name + s;
+    cv::FileStorage fsConf(fileNameConf, cv::FileStorage::WRITE);
+    fsConf << "m" << m;
+
+    fsConf.release();
+}
+
+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, 0);
+    cv::Mat imageMat2 = imread(image_path2, 0);
+    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);
+
+    std::cout << "lines " << keylines1.size() << " " << keylines2.size()
+              << std::endl;
+
+    /* 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);
+    for(int x = 0; x<matches.size(); x++)
+        std::cout << matches[x].queryIdx << " " << matches[x].trainIdx << std::endl;
+
+    /* result checkout */
+    cv::Mat result(descr1.size(), CV_8UC1);
+    std::cout << "size " << descr1.rows << " " << descr1.cols
+              << " " << descr2.rows << " " << descr2.cols << std::endl;
+//    for(size_t i = 0; i<matches.size(); i++){
+//        uchar* pointer = result.ptr(i);
+//        uchar* trainPointer = descr2.ptr(matches[i].trainIdx);
+//        *pointer = *trainPointer;
+//        pointer++;
+//    }
+
+
+    /* write matrices */
+    writeMat(descr1, "descr1", 0);
+    writeMat(result, "result", 0);
+}
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