fix a potential crash when there are no keypoints

13 years ago · 2219e38192
parent 630d874e03
commit 2219e38192
1 changed files with 2 additions and 0 deletions
--- a/modules/features2d/src/orb.cpp
+++ b/modules/features2d/src/orb.cpp
@ -891,6 +891,8 @@ void ORB::operator()(const Mat &image_in, const Mat &mask, vector<KeyPoint> & ke
        // Get the features and compute their orientation
        vector<KeyPoint>& keypoints = all_keypoints[level];
        int nkeypoints = (int)keypoints.size();
+        if (nkeypoints==0)
+            continue;
        
        // Compute the descriptors
        if (do_descriptors)