how does Flann Matcher train work in opencv?
问题 I'm new in opencv. My question is: I have 2 train image descriptor trainA and trainB. Then i construct a vector to put them in, and add them into flann matcher for train. After that, i use query image descriptor queryC to do the knnMatch and get a DMatchs returned. In this case, which train descriptor would be used to match queryC, trainA or trainB? and how does the training help to improve the match accuracy? Thanks in advance. 回答1: Both. It is not "training" in standard meaning. "Training"