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.
- Presets, “Input Type”, Clipping, Blending Options, Preview, Merge filter, Split view
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![[Poznámka]](images/note.png)
Poznámka These options are described in Oddiel 2, “Common Features”.
- Horizontal
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Renders near horizontal edges.
- Vertical
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Renders near vertical edges.
- Keep sign
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This option allows you to set how the filter will work if you have selected one direction for use only: a flat relief with bumps and hollows will be created.
