convolution commutative

[sofroniewn]

Actually, it turns out that we can do it in any order (convolution is `associative`), so we can create a filter that combines both the difference and the mean.

I think you want commutative above instead of associative, both are true, but commutativity is the relevant one here

[jni]

it's not? We demonstrate ((image * smoothkernel) * edgekernel) vs (image * (smoothkernel * edgekernel))?

[sofroniewn]

ah nice, ok that's fine - will close