Indeed, among other things, they detect edges, movement, and preprocess color from RGB to something conceptually closer to YUV (with color encoded along two con

Indeed, among other things, they detect edges, movement, and preprocess color from RGB to something conceptually closer to YUV (with color encoded along two contrast axes: red-green and blue-yellow). https://en.wikipedia.org/wiki/YUV https://en.wikipedia.org/wiki/YUV