| 5.6.  Sobel | ||
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5.  Edge-detect filters |   |
| 5.6.  Sobel | ||
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5.  Edge-detect filters |   |
You can find this filter through → → .
Sobel's filter detects horizontal and vertical edges separately on a scaled image. Color images are turned into RGB scaled images. As with the Laplace filter, the result is a transparent image with black lines and some rest of colors.
Sobel Horizontally: Renders near horizontal edges.
Sobel Vertically: Renders near vertical edges.
Keep sign of result: This option works when only one direction is selected: it gives a flat relief with bumps and hollows to the image.
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| 5.5.  Neon   |
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 6.  Enhance filters |
