The reason that the filters are of size 11x11x3 is that there is a separate filter for each one of the R, G, and B channels. I believe the black and white filters have the same filter weights for each channel, whereas the filters with color have different filter weights for each color.
The reason that the filters are of size 11x11x3 is that there is a separate filter for each one of the R, G, and B channels. I believe the black and white filters have the same filter weights for each channel, whereas the filters with color have different filter weights for each color.