IR Blob - off screen or just off?

asked 2016-07-12 22:32:43 -0500

dmen gravatar image

I am tracking an infrared LED with a simple contour check - it works great. However the LED has a switch and can be turned off - I am needing to know if the switch went off or if the LED just moved out of view of the camera.

I thought I could do something simple with just checking position, but if the led is moved fast off screen, then the last tracked point I get from my detector is on screen... maybe I can just use something like an edge buffer where if the last point is within the buffer range, it's likely off screen now, and not turned off.

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Yep, just check the last few for direction and velocity. If it was approaching the edge and headed in the right direction, it's off screen.

Tetragramm gravatar imageTetragramm ( 2016-07-12 23:17:10 -0500 )edit