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In the document, the protocol type of function is: C++: void computeCorrespondEpilines(InputArray points, int whichImage, InputArray F, OutputArray lines); I call this function with "points" as vector<point2f>, and expect "lines" as epilines parameter(a,b,c).

The code:

vector<point2f> points; points.push_back(Point2f(10,100)); cv::Mat lines;

computeCorrespondEpilines(points, 1, fundamental_mat, lines);

The output "lines" is expected as 3x1 matrix. But it is 1x1 matrix indeed. Am I wrong with its usage? Help!