is there a way... to find the location(X,Y) of a single pixel (thats red) thats on a complete black background?

Awesome work! I have a few questions. :) I'm trying to do something similar and am stuck in a black hole. Im trying to create a tool to get stereoscopic depth info. you used "sampleImage(point, radius = [.5, .5], postEffect=true, t=time)" to sample the color info. What I am trying to do is...