djtoshi182

I am trying to make video that only shows physically lightened part of the object from the webcam. I used rgb2luma and jit.op to set the threshold of lightened 'white' part and I want that part is the part to be shown on original video input. There should be not seen rgb2luma b/w on final screen. Like I said, I will just use the lightened(white) part from b/w. The part of original video will should be overlayed over white or another video plane.

I tried to use jit.op options but still sees b/w traces over the video input. Should the white part convert to an alpha channel to mix with original video? how to do that?

I am trying to make video that only shows physically lightened part of the object from the webcam.  I used rgb2luma and jit.op to set the threshold of lightened 'white' part and I want that part is the part to be shown on original video input.  There should be not seen rgb2luma b/w on final screen.  Like I said, I will just use the lightened(white) part from b/w.   The part of original video will should be overlayed over white or another video plane.

make-white-input-to-a-alpha-channel

I think you want to do something like this.

make white input to a alpha channel