[GRASS-user] Confused when using i.fusion.brovey

[Michael Barton]

Nikos,

Nikos,

Have you considered adding HPFA Image Fusion Technique as a method in the i.pan.sharpen module?

Michael
____________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Head, Graduate Faculty in Complex Adaptive Systems Science
Arizona State University

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On Nov 4, 2014, at 8:00 AM, <grass-user-request at lists.osgeo.org<mailto:grass-user-request at lists.osgeo.org>> <grass-user-request at lists.osgeo.org<mailto:grass-user-request at lists.osgeo.org>> wrote:

From: Nikos Alexandris <nik at nikosalexandris.net<mailto:nik at nikosalexandris.net>>
Subject: Re: [GRASS-user] Confused when using i.fusion.brovey
Date: November 4, 2014 at 3:28:18 AM MST
To: <grass-user at lists.osgeo.org<mailto:grass-user at lists.osgeo.org>>


Kevin wrote:

For your information -

For rapid band combinations and pan-sharpening of the latest Landsat-8
satellite imagery, you may take a look at the free and advanced image
fusion software from GeoSage.

The software with 2 simple button clicks:

http://www.geosage.com/highview/features_landsat8.html

If you have the latest QGIS installed, click the 3rd button for GeoTFF ->
KMZ conversion.

Hope this helps.

Kevin, thanks for the info.

I have tried this tool in the past and it is very nice. However, it is not open-source(d). That's a huge blocker in trying to understand what's being done with the data exactly. It would be awesome to have access to the source code and try to replicate it for grass (credits to original authors are always respected, of course).

If you work with grass under Linux, you may want to try out the replication of the HPFA Image Fusion Technique for grass (a bash shell): <https://github.com/NikosAlexandris/i.fusion.hpf.sh>. I my opinion, it outperforms the rest of the available techniques, in both image sharpness and preservation of the original radiometric properties.

I have a work-in-progress python version of this script which I am trying to finalise these days (and hope it will meet the criteria to be included as a grass-addon at some point).

Nikos

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