*/
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 )
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;