Merge pull request #6880 from berak:fix_opencv_visualization
authorAlexander Alekhin <alexander.alekhin@itseez.com>
Wed, 13 Jul 2016 11:51:29 +0000 (11:51 +0000)
committerAlexander Alekhin <alexander.alekhin@itseez.com>
Wed, 13 Jul 2016 11:51:29 +0000 (11:51 +0000)

Trivial merge