Computes an image descriptor using keypoint descriptors
[bow,idx] = extractor.compute1(kptDescs)
Input
- kptDescs Computed descriptors to match with vocabulary.
It is a numeric matrix that is returned by
cv.DescriptorExtractor.compute.
Output
- bow Computed output image descriptor. A vector of the same
length as the vocabulary dimension.
- idx Indices of keypoints that belong to the cluster. A
cell array of integer vectors. This means that
idx{i}
are keypoint indices that belong to the i-th cluster
(word of vocabulary).