I have to divide each image to separate blocks and then apply a function on each block in Matlab. In CPU, I used blokproc function for block processing of image. But it takes too time. So I have to use GPU. But GPU does not recognize blokproc function, So I have to use another function. There is gpucoder.stencilKernel function but it only works for 2D image(gray scaled images). My images are 3D (colored image in 3 channels R,G and B). Is there another function for block processing on GPU?

I searched many times, but I could not find any function for block processing of colored images on GPU.