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KeyPoint has more parameters, like point (the center), angle (where is the corner pointing to), etc, see the docs; while the descriptors may be computed via HOG (here is a nice example), on the keypoint size for example...

KeyPoint has more parameters, like point (the center), angle (where is the corner pointing to), etc, see the docs; while the descriptors may be computed via HOG (here (here is a nice example), on the keypoint size for example...

KeyPoint has more parameters, like point (the center), angle (where is the corner pointing to), etc, see the docs; while the descriptors may be computed via HOG (here is a nice example), on the keypoint size for example...