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2015-10-12 00:22:10 -0600

answered a question

OpenCV and Python: Problems with knnMatch arguments

This worked for me

FLANN_INDEX_KDTREE = 0
index_params = dict(algorithm = FLANN_INDEX_KDTREE, trees = 5)
search_params = dict(checks=50)

flann = cv2.FlannBasedMatcher(index_params,search_params)
matches = flann.knnMatch(np.asarray(des1,np.float32),np.asarray(des2,np.float32),k=2)