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Thread: High Pass Filter in GIMP (new plugin)

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    I thought you'd appreciate the honour, especially when I post this up at the Gimp plugin repository 10 years from now someone will say "why is that mode called redrobes?"

    I think the difference comes from adding in the extra blur-average, to the average-blur.

    The basic algorithm I used for all of them (except the redrobes mode) was:

    -duplicate layer
    -blur the duplicate
    -invert the duplicate
    -set the duplicate to 50% opacity, keeping the mode "normal"
    -merge it down.

    This gives the hpf with a base 10 50% grey.

    EDIT: Thanks for the filter. I'm also working to add all of your FFT maps as pick lists in a front-end to the gimp FFT plugin.

    -Rob A>

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