[Qgis-user] Pansharpening Images

[boxerg at iinet.net.au]

Thanks Micha,

That works but I don’t know why it is called “BundleToPerfectSensor”? I have searched for pansharpening algorithms previously and would never have guessed that one!

Cheers Grant

Perth WA

 

From: Micha Silver <tsvibar at gmail.com> 
Sent: Thursday, May 23, 2024 10:38 PM
To: Grant Boxer <boxerg at iinet.net.au>; qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Pansharpening Images

 

In the past I've used the pan sharpening function in Orfeo Toolbox on WorldView 3 imagery. I chose the "bayes" method, not Gram-Schmidt that you want. Orfeo implements three sharpening algorithms:

https://www.orfeo-toolbox.org/CookBook/Applications/app_BundleToPerfectSensor.html

 

Here's the code I used (after preparing a *.vrt from both the PAN and the Multiband files)

 

WV_dir="....."
region="....."

# Pan sharpening
otbcli_BundleToPerfectSensor -inp ${WV_dir}/${region}_PAN.vrt -inxs ${WV_dir}/${region}_Multi.vrt -out ${WV_dir}/${region}_pansharp_bayes.tif uint16 -method bayes -ram 8000 -progress true

# Compress
gdal_translate -co COMPRESS=ZSTD -co PREDICTOR=2 ${WV_dir}/${region}_pansharp_bayes.tif ${WV_dir}/${region}_pansharp_bayes2.tif
mv ${WV_dir}/${region}_pansharp_bayes2.tif ${WV_dir}/${region}_pansharp_bayes.tif
gdaladdo -r average --config COMPRESS_OVERVIEW ZSTD --config PREDICTOR_OVERVIEW 2 -ro ${WV_dir}/${region}_pansharp_bayes.tif

HTH

 

On 23/05/2024 6:43, Grant Boxer via QGIS-User wrote:

Does anyone know of a plug-in or algorithm for QGIS where I can pansharpen satellite imagery using the Gram-Schmidt method?

Cheers Grant

Perth WA

 





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-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918
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