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added check of output image in drawKeypoints()

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This commit is contained in:
Maria Dimashova 2011-08-05 14:04:38 +00:00
parent a46da86325
commit 0d55ccac74
1 changed files with 2 additions and 0 deletions
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2
modules/features2d/src/draw.cpp
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@ -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;