Comparison with Unsharp Masking (USM)


Multi-scale contrast manipulation is a valuable digital darkroom technique. Currently it is possible to sharpen images (which may be viewed as increasing the local contrast of the finest scale details), as well as to adjust the global contrast. However, adjusting the local contrast for scales in between these two extremes is typically done with unsharp masking, which is prone to halos. Our multi-scale edge-preserving decompositions are intended to fill this gap.


Instructions: Roll your mouse over each thumbnail to see a larger version of the image appear below. This makes it possible to easily flip back and forth between the images.

Boosting Fine Details Using WLS
Boosting Fine Details Using USM
Boosting Medium Details Using WLS Boosting Medium Details Using USM
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