GEGL edge-detect operations
artistic blend blur color compositors core display distort dither edge-detect enhance fractal frequency generic gradient grayscale hidden illusions input json layout light map math matting meta noise noise-reduction output porter-duff programming render scramble segmentation sharpen svgfilter tile tonemapping transform transparency vector video
gegl:difference-of-gaussians
gegl:edge
gegl:edge-laplace
gegl:edge-neon
gegl:edge-sobel
gegl:image-gradient
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