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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Here it goes, as Nikos Ves (depending on free time) works on the Python version (and I'll try to help), the bash proof of concept works. Attached here.</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">After some initial testing, we think that GRASS' results are just slightly more smooth for when applying the exact same parameters to get the HPFA Pan-Sharpened material.</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">To run a test, get the attached tarred file, untar, compile as a grass-addon against G64. Then, the simplest execution form will be:</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"># note, the *algorithm* processes each low resolution image separately</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.fusion.hpf pan=lsat7_2000_80 msx=lsat7_2000_10</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"># or, let's get the usual landsat bands 1, 2 and 3</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.fusion.hpf pan=lsat7_2000_80 msx=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"># some manual work to rebalance colors (required)</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.landsat.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.mon x0</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"># increase crispness (not very obvious)</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.fusion.hpf pan=lsat7_2000_80 msx=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30 --o modulator=max</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.landsat.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.mon x1</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"># hmmm... let's override the algorithms ratio computation</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.fusion.hpf pan=lsat7_2000_80 msx=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30 --o modulator=max ratio=6</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">i.landsat.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.mon x2</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">d.rgb r=hpf_lsat7_2000_30 g=hpf_lsat7_2000_20 b=hpf_lsat7_2000_10</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">BTW, it works really great with QuickBird imagery. Will upload in the next days screenshots with freely available HR imagery (i.e. QB2, IKONOS) and Landsat5, 7 and 8. Just a few Landsat 8 screenshots uploaded in the Wiki:</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">http://grasswiki.osgeo.org/wiki/File:Bengkalis_Island_Landsat8_RGB_Red_NIR_Blue.jpg</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">http://grasswiki.osgeo.org/wiki/File:Bengkalis_Island_Landsat8_Panchromatic.jpg</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">http://grasswiki.osgeo.org/wiki/File:Bengkalis_Island_Landsat8_HPFA_Sharpened_RGB_Red_NIR_Blue_Default_Parameters.jpg</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">http://grasswiki.osgeo.org/wiki/File:Bengkalis_Island_Landsat8_HPFA_Sharpened_RGB_Red_NIR_Blue_Max_Crispness.jpg</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Nikos</p></body></html>