(OpenCV Stitching) matchesGraphAsString function

"matchesGraphAsString " is useful function to see the stitching relationship graph.

The function gives the result as to string.

As figure, we can know m6-m7-m8-m9 is linked and S1, S6 is not correlation with the group.
You have to get pairwise_matches before using the function.
The matching method is introduced on
cpu version -> http://feelmare.blogspot.kr/2013/12/finding-largest-subset-images-that-is.html
gpu version-> http://feelmare.blogspot.kr/search?updated-max=2014-01-14T00:52:00-08:00&max-results=2&start=2&by-date=false

After get pairwise_matches, you can get the result of stitching grouping as this example source code.

float conf_thresh=1.0;
 vector< cv::String > img_names;
 img_names.push_back( "m7.jpg");   
 img_names.push_back( "S1.jpg");   
 img_names.push_back( "m9.jpg");   
 img_names.push_back( "m6.jpg");   
 img_names.push_back( "S6.jpg");   
 img_names.push_back( "m8.jpg"); 
 ofstream f("graph.txt");
 f << detail::matchesGraphAsString(img_names, pairwise_matches, conf_thresh);


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