Unsharp masking
Videos
Unsharp masking is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the techniq
Source image (top), sharpened image (middle), highly sharpened image (bottom)
Gaussian blur
Videos
In image processing, a Gaussian blur is the result of blurring an image by a Gaussian function.
Unsharp masking
…implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the technique uses a blurred, or "unsharp", negative image to create a mask of the original image. The unsharp mask is then combined with the original positive image, creating an…
A halftone print rendered smooth through Gaussian blur