@bb
In theory it's possible but with those matrix you have not a center pixel. I think it's annoying.
I thought about a 5x5x5 matrix, but it will be slower and I first want to have a stable Convolution3d before changing too much the basis.
But if you explain me better what could be cool with this, I can change my mind. You usually have great ideas
.
I also thought of not using the previous and next frame when there is too much difference between prev, current and next pixel (only luma will be checked). I should help a lot in fade in or fade out scene.