question: computes the descriptors for a set of keypoints detected in an image first variant or image set second variant . concode_field_sep int OPPONENT_BRISK concode_elem_sep int OPPONENT_SIFT concode_elem_sep int OPPONENT_FREAK concode_elem_sep long nativeObj concode_elem_sep int OPPONENTEXTRACTOR concode_elem_sep int ORB concode_elem_sep int OPPONENT_SURF concode_elem_sep int SIFT concode_elem_sep int FREAK concode_elem_sep int OPPONENT_ORB concode_elem_sep int OPPONENT_BRIEF concode_elem_sep int BRIEF concode_elem_sep int SURF concode_elem_sep int BRISK concode_field_sep void read_0 concode_elem_sep void read concode_elem_sep boolean empty_0 concode_elem_sep long create_0 concode_elem_sep void delete concode_elem_sep int descriptorType concode_elem_sep void compute_0 concode_elem_sep boolean empty concode_elem_sep void compute_1 concode_elem_sep int descriptorSize_0 concode_elem_sep int descriptorSize concode_elem_sep int descriptorType_0 concode_elem_sep DescriptorExtractor create concode_elem_sep void finalize concode_elem_sep void write_0 concode_elem_sep void write
target: void function ( Mat arg0 , MatOfKeyPoint arg1 , Mat arg2 ) { Mat loc0 = arg1 ; compute_0 ( nativeObj , arg0 . nativeObj , loc0 . nativeObj , arg2 . nativeObj ) ; return ; }