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Nikos,
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<div>Nikos,</div>
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<div>Have you considered adding <span style="font-family: BitstreamVeraSerif-Roman;">HPFA Image Fusion Technique</span> as a method in the i.pan.sharpen module?</div>
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<div>Michael<br>
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____________________</div>
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<font face="Helvetica" size="3">C. Michael Barton</font></div>
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<font face="Helvetica" size="3">Director, Center for Social Dynamics & Complexity </font></div>
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<font face="Helvetica" size="3">Professor of Anthropology, School of Human Evolution & Social Change</font></div>
<div><font face="Helvetica" size="3">Head, Graduate Faculty in Complex Adaptive Systems Science</font></div>
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<font face="Helvetica" size="3">Arizona State University</font></div>
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<font face="Helvetica" size="3"><font>voice: </font><font>480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)</font><br>
<font>fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)</font><br>
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<font face="Helvetica" size="3">www: <a href="http://www.public.asu.edu/~cmbarton">
http://www.public.asu.edu/~cmbarton</a>, <a href="http://csdc.asu.edu">http://csdc.asu.edu</a></font></div>
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<div>On Nov 4, 2014, at 8:00 AM, <<a href="mailto:grass-user-request@lists.osgeo.org">grass-user-request@lists.osgeo.org</a>> <<a href="mailto:grass-user-request@lists.osgeo.org">grass-user-request@lists.osgeo.org</a>> wrote:</div>
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<span style="font-family: Helvetica; color: rgb(127, 127, 127);"><b>From:<span class="Apple-converted-space"> </span></b></span><span style="font-family: Helvetica;">Nikos Alexandris <<a href="mailto:nik@nikosalexandris.net">nik@nikosalexandris.net</a>><br>
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<span style="font-family: Helvetica; color: rgb(127, 127, 127);"><b>Subject:<span class="Apple-converted-space"> </span></b></span><span style="font-family: Helvetica;"><b>Re: [GRASS-user] Confused when using i.fusion.brovey</b><br>
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<span style="font-family: Helvetica; color: rgb(127, 127, 127);"><b>Date:<span class="Apple-converted-space"> </span></b></span><span style="font-family: Helvetica;">November 4, 2014 at 3:28:18 AM MST<br>
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<span style="font-family: Helvetica; color: rgb(127, 127, 127);"><b>To:<span class="Apple-converted-space"> </span></b></span><span style="font-family: Helvetica;"><<a href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>><br>
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<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">Kevin
wrote:</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
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For your information -<br>
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For rapid band combinations and pan-sharpening of the latest Landsat-8<br>
satellite imagery, you may take a look at the free and advanced image<br>
fusion software from GeoSage.<br>
<br>
The software with 2 simple button clicks:<br>
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<a href="http://www.geosage.com/highview/features_landsat8.html">http://www.geosage.com/highview/features_landsat8.html</a><br>
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If you have the latest QGIS installed, click the 3rd button for GeoTFF -><br>
KMZ conversion.<br>
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Hope this helps.<br>
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<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">Kevin,
thanks for the info.</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
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<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">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).</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">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): <</span><a href="https://github.com/NikosAlexandris/i.fusion.hpf.sh" style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">https://github.com/NikosAlexandris/i.fusion.hpf.sh</a><span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">>.
I my opinion, it outperforms the rest of the available techniques, in both image sharpness and preservation of the original radiometric properties.</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">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).</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
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<span style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">Nikos</span><br style="font-family: BitstreamVeraSerif-Roman; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
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