matchdescriptors.cpp

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#include "Common.h"
#include "opencv2/features2d/features2d.hpp"

using namespace std;
using namespace cv;

/*performs matching of keypoints in 2 images for all image pairs in the stack*/
void extractandmatch(vector<Mat>& imgptr,vector<Mat>& desc,vector<vector<DMatch>>& goodmatches)
{
	int middleframe=3;
	int i,j,numberofimages=8;
	BFMatcher matcher(NORM_L2,true);
	vector<vector<DMatch>> matches(numberofimages);
	/*Computing matches for each frame*/
	for( i=0;i<numberofimages;i++)
	{
		if(i!=3)
		{
			matcher.match(desc.at(3),desc.at(i),matches.at(i));
		}

	}
	cout<<" Matching Keypoints in image pair...."<<"\n";
	/*Refining matches based on error distance*/
	for ( j=0;j<numberofimages;j++)
	{
		if (j!=3)
		{
			for(  i=0; i<matches.at(j).size();i++)
			{
				if (matches.at(j).at(i).distance<=250/*2.5*mindist.at(j)*/)
				{ 
					goodmatches.at(j).push_back(matches.at(j).at(i));

				}
			}
		}
	}
	matcher.~BFMatcher();
	matches.~vector();

}