<div dir="ltr">For your information - <br><br><div><div>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.<br><br>The software with 2 simple button clicks:<br><br><a href="http://www.geosage.com/highview/features_landsat8.html" target="_blank">http://www.geosage.com/highview/features_landsat8.html</a><br><br></div>If you have the latest QGIS installed, click the 3rd button for GeoTFF -> KMZ conversion.<br><br></div>Hope this helps.<br><br><div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 18, 2014 at 6:44 AM, Markus Neteler <span dir="ltr"><<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="">On Mon, Jun 16, 2014 at 3:55 PM, Johan de Braak<br>
<<a href="mailto:johan_debraak@hotmail.com">johan_debraak@hotmail.com</a>> wrote:<br>
> Dear all,<br>
><br>
> I have used i.fusion.brovey to transform a Landsat 8 image (6 bands) to a<br>
> cell size of 15x15. I have 3 questions regarding this tool:<br>
><br>
> 1. Is the output reliable if I run this tool twice to convert all 6 bands?<br>
> If not, what should I do to transform 6 bands with a reliable output? And<br>
> why is it not possible to specify more than three bands?<br>
<br>
</span>The Brovey transform has been defined for using three multispectral<br>
and the panchromatic bands:<br>
<a href="http://grass.osgeo.org/grass64/manuals/i.fusion.brovey.html" target="_blank">http://grass.osgeo.org/grass64/manuals/i.fusion.brovey.html</a><br>
<br>
That's how it was developed and suggested in Roller, N.E.G. and Cox, S., 1980.<br>
<span class=""><br>
> 2. When specifying the input, between brackets is mentioned: green tm2, NIR<br>
> tm4, MIR tm5.<br>
<br>
</span>Yes, the *input* bands.<br>
<span class=""><br>
> The files created however are named red green and blue.<br>
<br>
</span>This is how they are commonly assigned to the R/G/B color<br>
visualization tool, i.e. d.rgb.<br>
<span class=""><br>
> I have assumed that 'ms1' results in 'outputprefix.red', 'ms2' results in<br>
> 'outputprefix.green' and 'ms3' resuls in 'outputprefix.blue'. Is this<br>
> assumption true? Why are the output names different from what is mentioned<br>
> between brackets in the input?<br>
<br>
</span>Because in the definition of this transform the blue band is not used.<br>
In theory it is up to you which bands you input, in case you will<br>
simply deviate from the original definition.<br>
<span class=""><br>
> 3. Is it recommended to use this tool before performing a supervised image<br>
> classification with the output of i.fusion.brovey?<br>
<br>
</span>Personally I would not consider this since it may add correlation<br>
between the bands.<br>
<br>
Please also consider the updated version in GRASS GIS 7:<br>
<a href="http://grass.osgeo.org/grass70/manuals/i.pansharpen.html" target="_blank">http://grass.osgeo.org/grass70/manuals/i.pansharpen.html</a><br>
<br>
And perhaps this page:<br>
<a href="http://grasswiki.osgeo.org/wiki/Image_classification" target="_blank">http://grasswiki.osgeo.org/wiki/Image_classification</a><br>
<br>
GRASS GIS 7 comes with new classification software:<br>
<a href="http://grass.osgeo.org/grass70/manuals/g.gui.iclass.html" target="_blank">http://grass.osgeo.org/grass70/manuals/g.gui.iclass.html</a><br>
<a href="http://grasswiki.osgeo.org/wiki/Image_classification" target="_blank">http://grasswiki.osgeo.org/wiki/Image_classification</a><br>
<br>
Markus<br>
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</blockquote></div><br></div></div></div>