From: Maria Dimashova <no@email>
Date: Fri, 8 Jul 2011 15:54:57 +0000 (+0000)
Subject: fixed SIFT when keypoints vector is empty (#1162)
X-Git-Tag: accepted/tizen/6.0/unified/20201030.111113~6693
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0b1575c485d3e6b489a3f52e773615ba3a4f529e;p=platform%2Fupstream%2Fopencv.git

fixed SIFT when keypoints vector is empty (#1162)
---

diff --git a/modules/features2d/src/sift.cpp b/modules/features2d/src/sift.cpp
index 4cdf920..4203ebe 100644
--- 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++ )