RasterFlow
Frequency

High Pass Filter

gegl:high-pass
Enhances fine details.
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Operation pads

This operation exposes the following data pads, defining how it receives, processes, and emits image data:

Input
Output

Operation properties

Std. Dev.
gdouble
Standard deviation (spatial scale factor).
Default 4.00
Value range 0.00 • • 10000.00.
Contrast
gdouble
Contrast of high-pass.
Default 1.00
Value range 0.00 • • 5.00.

Sharpen (Unsharp Mask)

Sharpen image, by adding difference to blurred image, a technique for sharpening originally used in darkrooms.

Convolution Matrix

Apply a generic 5x5 convolution matrix.