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fix #1169

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This commit is contained in:
Vincent Rabaud 2011-06-29 17:01:23 +00:00
parent 3df6548c4a
commit b5754550ab
1 changed files with 4 additions and 0 deletions
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4
modules/features2d/src/orb.cpp
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@ -640,6 +640,10 @@ inline void cull(std::vector<cv::KeyPoint>& keypoints, size_t n_points)
//this is only necessary if the keypoints size is greater than the number of desired points.
if (keypoints.size() > n_points)
{
if (n_points==0) {
keypoints.clear();
return;
}
//first use nth element to partition the keypoints into the best and worst.
std::nth_element(keypoints.begin(), keypoints.begin() + n_points, keypoints.end(), keypointResponseGreater);
//this is the boundary response, and in the case of FAST may be ambigous