Unsharp Mask command
Filter menu
A process used to sharpen images consists of subtracting a blurred version of an image from the image itself.
The Unsharp Mask filter sharpens edges of the elements without increasing noise or blemish. It is the best of the sharpen filters.



Radius
Allows you to set how many pixels on either side of an edge will be affected by sharpening. High resolution images allow higher radius. It is better to always sharpen an image at its final resolution.

Amount
Allows you to set strength of sharpening.

Threshold
Allows you to set the minimum difference in pixel values that indicates an edge where sharpen must be applied. So you can protect areas of smooth tonal transition from sharpening, and avoid creation of blemishes.



  



Related Topics
Filter menu
BlurBlur
BlurBlur More
BlurGaussian Blur
BlurSmoothing
BlurLocal Averaging
SharpnessSharpen
SharpnessSharpen More
SharpnessUnsharp Mask
SharpnessEnhance Focus
Edge DetectionLaplacian
Edge DetectionLaplacian of Gaussian
Edge DetectionPrewitt
Edge DetectionSobel
Edge DetectionKirsch
Edge EnhancementUsing Laplacian
Edge EnhancementUsing Prewitt
Edge EnhancementUsing Sobel
Edge EnhancementUsing Kirsch
Edge EnhancementEdge Enhancement
Min Mask
Median Mask
Max Mask
Dust and Scratches
Simple Mask