[GRASS-user] unexpected i.pansharpen results

[Hamish]

(sorry for the html,top posting)

I wonder if the script is doing integer division when it should be doing floating point division?

http://trac.osgeo.org/grass/browser/grass/trunk/scripts/i.pansharpen/i.pansharpen.py


Hamish

--- On Wed, 1/30/13, Eric Goddard <egoddard1010 at gmail.com> wrote:

From: Eric Goddard <egoddard1010 at gmail.com>
Subject: [GRASS-user] unexpected i.pansharpen results
To: grass-user at lists.osgeo.org
Date: Wednesday, January 30, 2013, 8:30 AM

Hi all,

I'm attempting to pansharpen some ikonos imagery using the i.pansharpen tool in Grass7 on windows 7 installed via OSGeo4W (r54756-478).  The range for the sharpened red, green, and blue outputs are 0-30, which seems suspicious given the 16bit range of the input bands. The command I used was:


i.pansharpen.py "sharpen=ihs" "ms3=ik_mss.4 at eric" "ms2=ik_mss.3 at eric" "ms1=ik_mss.2 at eric" "pan=ik_pan at eric" "output_prefix=ik_ihs"   


The input bands are linked via r.external, would that matter?

The output from my test area is below. Any assistance would be greatly appreciated.



Thanks,
Eric


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