Original image. 16Kb
Unsharp Masking can be used for enhancing images by improving their sharpness. The effect is also called “Local Contrast Enhancement.” Here’s how the syntax goes:
Technically, we did not introduce a separate operation for Unsharp Masking. Instead, we added the
:amount parameter to the
blur transformation. Negative
:amount combined with reasonably high blur
:strength provides the Unsharp Masking behavior.