For every input query descriptor, retrieve, from a dataset provided from user or from the one internal to class, all the descriptors that are not further than maxDist from input query

matches = matcher.radiusMatch(queryDescriptors, trainDescriptors, maxDistance)
matches = matcher.radiusMatch(queryDescriptors, maxDistance)
[...] = matcher.radiusMatch(..., 'OptionName', optionValue, ...)

Input

• queryDescriptors query descriptors.
• trainDescriptors dataset of descriptors furnished by user.
• maxDistance search radius.

Output

• matches vector to host retrieved matches.

Options

• Mask mask to select which input descriptors must be matched to ones in dataset. A vector of masks in the second variant (the i-th mask in vector indicates whether each input query can be matched with descriptors in dataset relative to i-th image). Not set by default.
• CompactResult flag to obtain a compact result (if true, a vector that doesn't contain any matches for a given query is not inserted in final result). default false

For every input desciptor, find all the ones falling in a certaing matching radius:

• in the first variant, for a pair of images
• in the second variant, from one image to a set