OpenCV ROS tutorial

I recently realized that OpenCV tutorials at ROS website is more useful than any others available out there.

Btw, My other programs in OpenCV will be posted here.

You can download it and other related stuff (cheatsheet, etc) at

1. https://code.ros.org/trac/opencv/browser/trunk/opencv/doc
2. https://code.ros.org/trac/opencv/browser/trunk/opencv/doc/opencv_user.pdf