Hey, I want to get the distance from my depth camera to an object. So far I read that you could do a workaround and convert it to OpenCV image format.

https://github.com/IntelRealSense/realsense-ros/issues/714

Is there a easier way to get the distance? I thought that the depth image has to choose the colour / grey value according to the distance, but I cant find the ratio.

Also how big is the quantisation error for the depth image?

Thank you very much for helping