The image is represented with a stack of layers which are equidistant in depth (depth layers), and instead of feeding the whole image (every pixel) i want to feed R random pixels (from 0 to HxW). So I have an array of shape (N,D,C,R,1) where N is the batch, D is the number of layers, C channel and R is the number of random pixels. I want to combine the layers in a final image (N, 1, C, R, 1). What conv is best to use for this network?