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Unsharp Mask Filter

Unsharp Mask Filter Pencilsheep Screenshot

The Unsharp Mask Filter increases small details. It does this by first blurring the image with a Gaussian Blur Filter and then subtracting the blurred version from the original image.

The "Radius" parameter controls the size of the details.

A small radius highlights small details.

Unsharp Mask Filter Pencilsheep Screenshot

A large radius highlights larger details

Unsharp Mask Filter Pencilsheep Screenshot

Strong Unsharp Mask Filters also increase image contrast. To lower contrast again, you can use the "Contrast" parameter. It can also be used for many other effects.

Unsharp Mask Filter Pencilsheep Screenshot

An Unsharp Mask Filter with a very large radius can also be used for automatic color correction.

Unsharp Mask Filter Pencilsheep Screenshot

Links

Documentation   Filters   Gaussian Blur Filter   Filter Menu