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Re: True-Color Modis Image [message #67490 is a reply to message #67480]

Thu, 30 July 2009 15:14

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> OK, I'm using the same 1-4-3 channel combination
> the MODIS guys are using, but my images don't look
> as bright and snappy as theirs do. Does anyone
> know what kinds of tricks they are using? Or, is
> this a government secret?

One of those days when I feel like I'm talking to
myself all day. :-(

OK, I found the secret on the Internet with some
IDL code that looks like it might have been written
by Liam Gumley. The secret is piecewise scaling
of values in the MODIS images. Sort of like local
scaling. I'll probably write an article about this
sometime soon, as it is something I would like to
remember, and it seems to have some general applications.

Very nifty, and my images now have a bright, sexy look,
rather than the drab, nerdy look they had before.

Cheers,

David

--
David Fanning, Ph.D.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: True-Color Modis Image By: David Fanning on Thu, 30 July 2009 21:22
		Re: True-Color Modis Image By: jameskuyper on Thu, 30 July 2009 20:46
		Re: True-Color Modis Image By: David Fanning on Thu, 30 July 2009 15:14
		Re: True-Color Modis Image By: David Fanning on Thu, 30 July 2009 14:38
		Re: True-Color Modis Image By: David Fanning on Thu, 30 July 2009 12:12
		Re: True-Color Modis Image By: David Fanning on Fri, 31 July 2009 13:31
		Re: True-Color Modis Image By: d.poreh on Fri, 31 July 2009 01:08

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