HighPass Filter Algorithm in Photoshop

Question

Algorithms

Hello Habralyudi!

I want to implement a filter similar to HighPass so that it cuts off the mids and leaves only the highs and lows, while doing it with a certain radius. Now there are two filters for high and low frequencies, but they work from left to right, and I need to make an even distribution. Tell me who faced.

Here is an example of what you need to get (the right side of the image is the result of the highpass operation):


Thanks in advance!

Answer 1

According to wikipedia , which links to the GIMP manual,
high-pass can be obtained by making a copy of the layer, applying a gaussian blur, inverting and then blending with the original layer with a certain opacity (for example 50%)