From: Vadim Pisarevsky <no@email>
Date: Tue, 9 Nov 2010 15:45:56 +0000 (+0000)
Subject: put extra check to cv::findChessboardCorners (ticket #648)
X-Git-Tag: accepted/tizen/6.0/unified/20201030.111113~8469
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9130d5bae10e203784a8fe25dd6afe6f2da97652;p=platform%2Fupstream%2Fopencv.git

put extra check to cv::findChessboardCorners (ticket #648)
---

diff --git a/modules/calib3d/src/calibinit.cpp b/modules/calib3d/src/calibinit.cpp
index c5c62d7..b6083fa 100644
--- a/modules/calib3d/src/calibinit.cpp
+++ b/modules/calib3d/src/calibinit.cpp
@@ -1904,7 +1904,8 @@ bool findChessboardCorners( const Mat& image, Size patternSize,
     CvMat _image = image;
     bool ok = cvFindChessboardCorners(&_image, patternSize,
         (CvPoint2D32f*)&corners[0], &count, flags ) > 0;
-    corners.resize(count);
+    if(count >= 0)
+        corners.resize(count);
     return ok;
 }