[HOT] OrbView-3 TMS of Mali (v2), Niger, Bangladesh, Colombia and South Sudan

Larry O'Neill larryoneill at gmail.com
Tue May 15 10:23:38 BST 2012

Hi Jean-Guilhem,

I did a little editing with this imagery in Bangladesh this morning, it's
Will definitely make a big difference in the Bingless areas =0)


On Sun, May 13, 2012 at 9:56 AM, Jean-Guilhem Cailton <jgc at arkemie.com>wrote:

> Le 12/05/2012 21:55, hbogner a écrit :
> >
> > How did you reprocess them? What did you change? Do you have a
> > comparison before and now?
> > Do you really need lvl 19? For our TMS lvl 18 is max and it's ok w3hen
> > you look at the source image quality.
> >
> Hi Hrvoje,
> Contrast enhancement is through linear stretching with saturation. Next
> step I'll work on would be to take into account the clouds. (Which are
> not much of a problem in Sahel...)
> Yes, you can compare before and now versions (temporarily). For the old
> version, add an extra layer with "mali_v0" instead of "mali" in the TMS
> address. (Most of the images were directly the georeferenced jpeg
> generated by USGS, available in "GIS ready bundle". The remaining 230 or
> so had been generated from L1Gst geotiff).
> Zoom level 19 is not really needed. It is just a default parameter of my
> tilecache configuration, which also includes other images, sometimes
> with better resolution. And I still get requests for level 20. :) (And
> also, not all uses are through JOSM, which can virtually zoom in itself).
> Best wishes,
> Jean-Guilhem
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