The Dust & Scratches filter removes artefacts like dust and scratch marks from your images by mapping out dissimilar pixels.
This filter can be applied as a non-destructive, live filter. It can be accessed via the Layer menu, from the New Live Filter Layer category.
Settings
The following settings can be adjusted in the filter dialog:
Radius—controls the size threshold for determining dust and scratch artefacts. If the artefacts are mainly fine in detail, use a smaller radius. Larger radius values will tackle larger artefacts.
Tolerance—determines how aggressively the filter should analyse the image. Increase the slider to reduce the amount of the image that the filter will affect.
Channel Tolerance—when checked, the Tolerance slider works on a per-channel basis. Useful for colour images as it can produce smoother results and fewer artefacts.
