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fix a potential crash when there are no keypoints

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This commit is contained in:
Vincent Rabaud 2012-02-16 19:21:48 +00:00
parent 630d874e03
commit 2219e38192
1 changed files with 2 additions and 0 deletions
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modules/features2d/src/orb.cpp
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@ -891,6 +891,8 @@ void ORB::operator()(const Mat &image_in, const Mat &mask, vector<KeyPoint> & ke
// Get the features and compute their orientation // Get the features and compute their orientation
vector<KeyPoint>& keypoints = all_keypoints[level]; vector<KeyPoint>& keypoints = all_keypoints[level];
int nkeypoints = (int)keypoints.size(); int nkeypoints = (int)keypoints.size();
if (nkeypoints==0)
continue;
// Compute the descriptors // Compute the descriptors
if (do_descriptors) if (do_descriptors)