From 0d55ccac74ee30b1a632334062423d2f1712d621 Mon Sep 17 00:00:00 2001
From: Maria Dimashova <no@email>
Date: Fri, 5 Aug 2011 14:04:38 +0000
Subject: [PATCH] added check of output image in drawKeypoints()

---
 modules/features2d/src/draw.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/features2d/src/draw.cpp b/modules/features2d/src/draw.cpp
index 45ee5862f0..b8dece6d43 100755
--- a/modules/features2d/src/draw.cpp
+++ b/modules/features2d/src/draw.cpp
@@ -54,6 +54,7 @@ namespace cv
  */
 static inline void _drawKeypoint( Mat& img, const KeyPoint& p, const Scalar& color, int flags )
 {
+    CV_Assert( !img.empty() );
     Point center( cvRound(p.pt.x * draw_multiplier), cvRound(p.pt.y * draw_multiplier) );
 
     if( flags & DrawMatchesFlags::DRAW_RICH_KEYPOINTS )
@@ -111,6 +112,7 @@ void drawKeypoints( const Mat& image, const vector<KeyPoint>& keypoints, Mat& ou
     RNG& rng=theRNG();
     bool isRandColor = _color == Scalar::all(-1);
 
+    CV_Assert( !outImage.empty() );
     for( vector<KeyPoint>::const_iterator i = keypoints.begin(), ie = keypoints.end(); i != ie; ++i )
     {
         Scalar color = isRandColor ? Scalar(rng(256), rng(256), rng(256)) : _color;
-- 
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