You can certainly operate directly on pixel arrays as well. When the original example here is changed to operate on .Pix instead of using .At(), it runs about 2

You can certainly operate directly on pixel arrays as well. When the original example here is changed to operate on .Pix instead of using .At(), it runs about 2x faster: https://github.com/nicolashahn/diffimg-go/pull/2 https://github.com/nicolashahn/diffimg-go/pull/2