Some film scanners, Nikon et al, feature an infrared channel which identifies
dust on the film, so it can be removed by software. One way to start to do
this is to use the IR channel as a layer mask on the image, leaving
transparency in place of the dust spots.
The second part of the process would be to synthesize pixels to fill the holes
in the image, by the interpolation of the color values of surrounding pixels
to create a seamless blending across each hole. A google search turned up one
mention of such a "Fill Holes" filter, but not the filter itself or any
useful clues to its whereabouts or continued existence.
Does such a filter still exist for the GIMP, and if so, where is it found?
Whitefield, NH USA
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