/// <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);
}
