Unsharp
This effect applies a traditional darkroom technique, the so called unsharp mask to every video frame. With different parameter values, this can be used to soften or to sharpen the image. Its parameters are:
- Amount
- moving the slider to the right makes dark areas get darker and light areas get lighter.
- Radius
- this slider controls how much blurring is used in the edge-finding stage. The practical effect of this is to specify how large a region is darkened or lightened.
- Threshold
- this slider controls how big a difference between a pixel in the blurred copy and the original copy is needed before any darkening or lightening will be applied.
- Clear
- to reset its slider to default without affecting others.
The CINELERRA-GG Community, 2021
https://www.cinelerra-gg.org