# \[LIVE CLASS\] How to use OpenCV with ROS

**URL:** <https://discourse.openrobotics.org/t/live-class-how-to-use-opencv-with-ros/13510>\
**Category:** Training & Education\
**Created:** [April 3, 2020, 4:43pm UTC](https://discourse.openrobotics.org/t/live-class-how-to-use-opencv-with-ros/13510 "2020-04-03T16:43:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![RebeccaU](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.openrobotics.org/rebeccau/32/4981_2.png) [@RebeccaU](https://discourse.openrobotics.org/u/RebeccaU)\
**Post date:** [April 3, 2020, 4:43pm UTC](https://discourse.openrobotics.org/t/live-class-how-to-use-opencv-with-ros/13510/1 "2020-04-03T16:43:34Z")

</div>

**How to use OpenCV with ROS**  
Live Class link: [https://youtu.be/0C0gOsLoP9k](https://youtu.be/0C0gOsLoP9k)

**LIVE DATE & TIME**

Scheduled for April 7, 2020 @ 6pm - 7pm CEST

**WHAT WE WILL BE DOING**

OpenCV is the best library for image processing. How can we take advantage of that with a ROS program?

In this Live Class we will show you how to capture an image from a ROS topic and convert it into an OpenCV image. Then we will show you how to use OpenCV to detect a line and make the robot follow the line.

**Robot used** : Parrot Drone

 ![Parrot-AR.Drone_](https://us1.discourse-cdn.com/flex022/uploads/ros/original/2X/c/cec245701f6be8250520e3ee7c74e5158bf7d103.png)