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11-01-2015, 10:25 PM   #61
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QuoteOriginally posted by jbinpg Quote
[snip] What I like about dcrawps is that you can tune the detection of pixel motion by command arguments and it will smooth out any detected pixel aberrations before compositing the final image.
Does dcrawps do that?
I see two dcrawps options that are related to PS, but neither suggest that dcrawps does any smoothing of the final image.

-G <num> Green channel PS artifact detect threshold %% (default = disabled)
-X Mark green channel PS artifacts with a purple marker in the output

Can you elaborate on how you get dcrawps to smooth the final image?

Cheers,
Terry

11-02-2015, 05:11 PM   #62
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Yes, dcrawps does pixel smoothing. Here is the readme from the author's webpage:

-G 1-99 1 detects the lightest artifacts (1% change in green level)
99 detects only the largest artifacts (99% change)
default is 100, artifact detection/repair disabled.

-X highlight artifacts in the output. If -G is not set it is set to 20%.


So you would need to set -G 100 (the default) to disable repair. Any other -G setting would enable repair. So using neither argument would disable repair and show you up to 20% of artifacts. This allows you to play with -X to see how many artifacts are in the image, then use -G xx to actually do the repair once you have found the sweetspot.

Jack
11-02-2015, 05:32 PM   #63
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QuoteOriginally posted by jbinpg Quote
Yes, dcrawps does pixel smoothing. Here is the readme from the author's webpage:

-G 1-99 1 detects the lightest artifacts (1% change in green level)
99 detects only the largest artifacts (99% change)
default is 100, artifact detection/repair disabled.

-X highlight artifacts in the output. If -G is not set it is set to 20%.


So you would need to set -G 100 (the default) to disable repair. Any other -G setting would enable repair. So using neither argument would disable repair and show you up to 20% of artifacts. This allows you to play with -X to see how many artifacts are in the image, then use -G xx to actually do the repair once you have found the sweetspot.

Jack
Thanks for that explanation.
The repair ability certainly isn't apparent from the help text I see here.

Cheers,
Terry
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