Keep track of peak and edge scores of each SIFT keypoint. #11

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Peak and edge thresholds are useful to reduce the number of keypoints produced by the SIFT. Identifying the "right" thresholds for a given task, however, is not trivial.

I have found an alternative approach quite useful. Given the full list of keypoints, I sort it by peak / edge scores and keep only the highest ranked results. Unfortunately, the current vlfeat implementation does not expose such scores to the user. This commit changes that, extending the VlSiftKeypoint struct.

@vedaldi vedaldi was assigned Aug 22, 2013
vedaldi commented Aug 22, 2013

A similar functionality exists in vl_covdet().

@vedaldi vedaldi closed this Aug 22, 2013
@vedaldi vedaldi reopened this Aug 22, 2013
@vedaldi vedaldi closed this Oct 2, 2014
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