8 Commits

Author	SHA1	Message	Date
Vadim Pisarevsky	1f261c2f9d	changed default parameters of SURF, which improved its performance. Restored bi-linear interpolation in SURF descriptor extractor. Added test for SURF homography + check for non-zero (positive) responses.	2013-01-30 18:07:37 +04:00
Vadim Pisarevsky	c69312ea0d	fixed #2580, #2210. some work on #2025. ... modified SIFT to 1) double image before finding keypoints, 2) use floating-point internally instead of 16-bit integers, 3) set the keypoint response to the abs(interpolated_DoG_value). step 1) increases the number of detected keypoints significantly and together with 2) and 3) it improves some detection benchmarks. On the other hand, the stability of the small keypoints is lower, so the rotation and scale invariance tests now struggle a bit. In 2.5 need to make this feature optional and add some more intelligence to the algorithm. added test that finds a planar object using SIFT.	2013-01-29 19:38:56 +04:00
Vadim Pisarevsky	84087a8566	fixed crash in Python's SURF wrapper (bug #2325)	2012-09-11 16:47:25 +04:00
Maria Dimashova	52ba2e45c4	removed obsolete parameter 'time' in regression test for descriptors	2012-07-02 12:44:41 +00:00
Vadim Pisarevsky	d5a0088bbe	merged 2.4 into trunk	2012-04-30 14:33:52 +00:00
Vadim Pisarevsky	2fd1e2ea57	merged all the latest changes from 2.4 to trunk	2012-04-13 21:50:59 +00:00
Vadim Pisarevsky	846e37ded5	fixed many warnings from GCC 4.6.1	2012-03-17 09:22:31 +00:00
Vadim Pisarevsky	957e80abbd	lot's of changes; nonfree & photo modules added; SIFT & SURF -> nonfree module; Inpainting -> photo; refactored features2d (ORB is still failing tests), optimized brute-force matcher and made it non-template.	2012-03-15 14:36:01 +00:00