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Re: AVHRR Calibration and Georeferencing [message #44345 is a reply to message #44248]

Fri, 03 June 2005 12:12

Jeff N.
Messages: 120
Registered: April 2005

Senior Member

I don't know anything about AVHRR processing, but couldn't you
georeference before you calibrate? I took a quick look at the geometry
doit, and it seems like it just computes some output bands that you'd
use to do the georeferencing with, without actually changing the
original level 1b image file. So it seems to me you could call the
georeferencing doit, then calibrate the input file, then georeference
the resulting calibrated image with the output bands of the
georeferencing routine.

Jeff

vinit11 wrote:
> June 3, 2005
>
> Hi,
>
> I have an AVHRR file that I want to first calibrate and then georeference
> using IDL (and ENVI).
>
> Thanks to the 'envi_avhrr_calibrate_doit' I can input an AVHRR file and
> get it calibrated. The output of this function is a file of type ENVI.
>
> Now, there is also an 'envi_avhrr_geometry_doit' function that does what
> georeferencing is needed, however, the input file to that function must be
> of type AVHRR.
>
> The problem I'm facing is that I cannot input the file that I calibrate
> using the 'envi_avhrr_calibrate_doit' function (since it is of type ENVI
> and needs to be of type AVHRR).
>
> I'd be grateful if someone could help me come up with a solution to this
> problem.
>
> Thanks very much,
>
> Vinit

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[Message index]

		AVHRR Calibration and Georeferencing By: vinit11 on Fri, 03 June 2005 07:13
		Re: AVHRR Calibration and Georeferencing By: Jeff N. on Fri, 03 June 2005 12:12
		Re: AVHRR Calibration and Georeferencing By: vinit on Thu, 09 June 2005 06:07
		Re: AVHRR Calibration and Georeferencing By: vinesh on Sat, 11 June 2005 00:36
		Re: AVHRR Calibration and Georeferencing By: vinit on Mon, 13 June 2005 18:20
		Re: AVHRR Calibration and Georeferencing By: vinit on Thu, 09 June 2005 06:45
		Re: AVHRR Calibration and Georeferencing By: Robert Moss, PhD on Sat, 19 December 2009 12:10

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