PostProcessing Image Effect SobelFilter

An ImageEffect Shader using the SobelFilter rendering the scene in black and white only showing edges.

How does it work?

I am working in a Kernel over every Pixel in a Texture. I calculate the weighted, average color both in horizontal and vertical direction for the Kernel and then convolve the results of this operation.

Applications:

Mostly fun shaders but this operation is also used for Seam Carving!