fixed SIFT when keypoints vector is empty (#1162)

14 years ago · 0b1575c485
parent fbed6d1d44
commit 0b1575c485
1 changed files with 2 additions and 1 deletions
--- a/modules/features2d/src/sift.cpp
+++ b/modules/features2d/src/sift.cpp
@ -1722,7 +1722,8 @@ void SIFT::operator()(const Mat& image, const Mat& mask,
        KeyPointsFilter::removeDuplicated( keypoints );

        // Compute descriptors.
-        cvSeqRemoveSlice( featuresSeq, cvSlice(0, featuresSeq->total) );
+        if( featuresSeq->total > 0 )
+            cvSeqRemoveSlice( featuresSeq, cvSlice(0, featuresSeq->total) );
    }

    for( size_t i = 0; i < keypoints.size(); i++ )