Re: Adjusting contrast and brightness

William L. Sebok (wls@astro.umd.edu)
Wed, 2 Dec 1998 10:26:09 -0500 (EST)

David Fox says:
> What I miss from the Windows scanning software is the way it could
> automatically choose good settings for the brightness and contrast
> based on the selected section of the preview. I'm interested in
> implementing this for xscanimage, can anyone point me to a good
> algorithm for doing this, or to a source of good algorithms?

Actually, automatically choosing brightness, contrast and gamma from a
selection on the preview is exactly the feature on the windows driver for
my Umax S12 that I miss most in sane. That and being able to zoom the preview
window to make a decently precise selection.

Bill Sebok Computer Software Manager, Univ. of Maryland, Astronomy
Internet: wls@astro.umd.edu URL: http://www.astro.umd.edu/~wls/

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