Yes Ivan,<br><br>was not sure about who could be doing it even, it was just an idea about improving KDE thumbnail for GIS, since gdal_translate has it already it should be just few code away though.<br><br>About the RS image display, gdal_translate outputs nice PNGs, we can tell easily if data is landsat (number of bands) and make a standard false colour composite (FCC) by selecting bands 4,3,2 for RGB.<br>
For AVHRR: 4,2,1 for RGB. Well, maybe use the metadata to tell us what satellite and what are the band representing, and then make FCC.<br><br>Could also have world countries, major rivers, (degree grid?) etc vectors overlaid on the fly while creating the thumbnail...<br>
<br>Just sending out ideas.....<br>Yann<br><br><br><br><div><span class="gmail_quote">On 14/03/2008, <b class="gmail_sendername">Lucena, Ivan</b> <<a href="mailto:ivan.lucena@pmldnet.com">ivan.lucena@pmldnet.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Yann,<br> <br> I think that is OK to do that. I don't want to discourage you but just<br> keep in mind that sometime, or very often, GIS/RS image are not very<br> expressive by itself. That is even worse in low resolution thumbnail.<br>
Imagine that you want to show a collection of Landsat original<br> multi-band files. Which band should you present in KDE or Explorer?<br> <br> Try that: Run "foreach" or "for %f in" to call gdal_translate to copy<br>
large group of real-case-GIS/RS-files to PNG outputs files in another<br> directory. Then open that directory on a file browser and take a look at<br> those thumbnails. See how does it looks like.<br> <br> Best regards,<br>
<br> Ivan<br> <br><br> Yann Chemin wrote:<br> > Hi list,<br> ><br> > It may be a small thing but it might help people...<br> ><br> > many OSs now have image browsers embedded. in MS it is in Explorer I<br>
> believe, in KDE there is a thumbnail creator inside konqueror/dolphin.<br> ><br> > could it be possible to make konqueror/dolphin for example, automatically<br> > create a thumbnail of RS images and GIS covers through GDAL?<br>
> We could then have GIS/RS data previews the same way we have for standard<br> > camera pictures...<br> ><br> > thanks,<br> > Yann<br> ><br> ><br> ><br> <br>> ------------------------------------------------------------------------<br>
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