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Re: Stretching MODIS data [message #79143 is a reply to message #79142]

Tue, 31 January 2012 05:40

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

titan writes:

> I'm trying to obtain an RGB image using MODIS data channel 01,02,06
> (daytime) and channels 20, 21 and 32 (night time).
>
> My code is working fine except for the stretching result in the sense
> that for the images obtained using "daytime channels" are darker than
> the ones obtained with the "nighttime channels" and this happens only
> for images belonging to winter season.

I'm not sure this applies to your problem, but I've
found that I needed to apply differential scaling
to "brighten" MODIS images up:

http://www.idlcoyote.com/ip_tips/brightmodis.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Stretching MODIS data By: David Fanning on Thu, 02 February 2012 05:59
		Re: Stretching MODIS data By: titan on Thu, 02 February 2012 05:23
		Re: Stretching MODIS data By: David Fanning on Tue, 31 January 2012 07:16
		Re: Stretching MODIS data By: titan on Tue, 31 January 2012 07:08
		Re: Stretching MODIS data By: David Fanning on Tue, 31 January 2012 05:40
		Re: Stretching MODIS data By: titan on Mon, 06 February 2012 07:18

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