matchShapes using grayscale images opencv
According to the matchShapes documentation, the input can be either gray scale images or contours. But when I tried two gray scale images, I got an assertion failed error. Upon further exploration, I found from here that the Mat object has to be a 1D vector and of type CV_32FC2 or CV_32SC2.
Using this answer, I converted the images to vector array of float after converting them to CV_32FC2. I still get an assertion error.
Can anyone tell me how can I compare 2 grayscale images using matchShapes function?
UPDATE
as asked in comments, I tried with 2 grayscale images. and this is the error I got
OpenCV Error: Assertion failed (contour1.checkVector(2) >= 0 && contour2.checkVector(2) >= 0 && (contour1.depth() == CV_32F || contour1.depth() == CV_32S) && contour1.depth() == contour2.depth()) in matchShapes, file /home/tonystark/Opencv/modules/imgproc/src/contours.cpp, line 1936
terminate called after throwing an instance of 'cv::Exception'
what(): /home/tonystark/Opencv/modules/imgproc/src/contours.cpp:1936: error: (-215) contour1.checkVector(2) >= 0 && contour2.checkVector(2) >= 0 && (contour1.depth() == CV_32F || contour1.depth() == CV_32S) && contour1.depth() == contour2.depth() in function matchShapes
Just curious, anything to do with my opencv version? it is 2.4.9
