Thank you very much Milo.
I fear there isn't a single node solution.
OK i understand. I'm also can't find a single node on this website.
opencv3 and VL.OpenCV contribution.
Thank you also here. Let me check
Actually My project is not art. Making vegetable harvest machine.
I want to measure distance of the robot arm finger and vegetable. for compensating for position of the arm.
Measure distance and feedback it to the robot-arm control system is my goal.