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Re: advanced image enhancement [message #32483 is a reply to message #32480]

Mon, 14 October 2002 08:30

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Oesch (oesch@giub.unibe.ch) writes:

> Is there any other possibility to enhance the content of an bytarr
> image? I tried BYTSCL and HIST_EQUAL, but ?m actually lokking for a Root
> enhancement, also known as a logarithmic transform, which particularly
> effective with images whose grey level distribution exhibits right
> skewness. The root enhancement stretches the dynamic range of the low
> end of the image while compressing its high end. It tends to lend an
> overall brightening to the resultant image.Has anyone implemented such
> an enhancement in IDL?

I don't have this particular algorithm coded up, but
you might find XSTRETCH handy for enhancing particular
sections of the image:

http://www.dfanning.com/programs/xstretch.pro

At the very least, it might give you some ideas.

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: advanced image enhancement By: David Oesch on Mon, 14 October 2002 09:23
		Re: advanced image enhancement By: Liam E. Gumley on Mon, 14 October 2002 09:51
		Re: advanced image enhancement By: Liam E. Gumley on Mon, 14 October 2002 09:55
		Re: advanced image enhancement By: David Fanning on Mon, 14 October 2002 08:30

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