/// <summary> /// Trains a descriptor matcher (for example, the flann index). In all methods to match, the method /// train() is run every time before matching.Some descriptor matchers(for example, BruteForceMatcher) /// have an empty implementation of this method.Other matchers really train their inner structures (for /// example, FlannBasedMatcher trains flann::Index ). /// </summary> public void Train() { Features2DInvoke.cveDescriptorMatcherTrain(_descriptorMatcherPtr); }