Advanced Sharpen - Speck removal artifacts

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davidh
Posts: 835
Joined: June 9th, 2009, 2:16 am

Advanced Sharpen - Speck removal artifacts

Post by davidh »

Some line artefacts start to emerge with larger Speck Size in the small preview and also in the big preview once it is executed with the OK or Compute entire output image buttons.

The setting in the attachment is exaggerated to make the lines better visible but they start to emerge beginning with the Speck Size 4x4.
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Speck removal artifacts.PNG
Speck removal artifacts.PNG (88.2 KiB) Viewed 1132 times
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Advanced Sharpen - Speck removal artifacts

Post by jsachs »

I am aware of this problem -- it is a flaw in the underlying algorithm for speck removal that shows up when you are removing so many specks that they overlap significantly.
Jonathan Sachs
Digital Light & Color
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