[gdal-dev] Google SoC idea...

[Yann Chemin]

Yes Ivan,

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.

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.
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.

Could also have world countries, major rivers, (degree grid?) etc vectors
overlaid on the fly while creating the thumbnail...

Just sending out ideas.....
Yann



On 14/03/2008, Lucena, Ivan <ivan.lucena at pmldnet.com> wrote:
>
> Yann,
>
> I think that is OK to do that. I don't want to discourage you but just
> keep in mind that sometime, or very often, GIS/RS image are not very
> expressive by itself. That is even worse in low resolution thumbnail.
> Imagine that you want to show a collection of Landsat original
> multi-band files. Which band should you present in KDE or Explorer?
>
> Try that: Run "foreach" or "for %f in" to call gdal_translate to copy
> large group of real-case-GIS/RS-files to PNG outputs files in another
> directory. Then open that directory on a file browser and take a look at
> those thumbnails. See how does it looks like.
>
> Best regards,
>
> Ivan
>
>
> Yann Chemin wrote:
> > Hi list,
> >
> > It may be a small thing but it might help people...
> >
> > many OSs now have image browsers embedded. in MS it is in Explorer I
> > believe, in KDE there is a thumbnail creator inside konqueror/dolphin.
> >
> > could it be possible to make konqueror/dolphin for example,
> automatically
> > create a thumbnail of RS images and GIS covers through GDAL?
> > We could then have GIS/RS data previews the same way we have for
> standard
> > camera pictures...
> >
> > thanks,
> > Yann
> >
> >
> >
>
> > ------------------------------------------------------------------------
> >
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>
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