[Freegis-list] HELP - Othorectification in Free and Open Software (GRASS, OSSIM...)
neteler at itc.it
Tue Apr 18 12:02:27 CEST 2006
On Wed, Apr 12, 2006 at 04:52:16PM +0200, Luigi Pirelli wrote:
> hi at all,
> We're studing Orthorectfication solutions inside the GFOSS world. We need
> to know and share common problems.
> In the GRASS world, we found i.ortho.photo, but it's not clear for us what
> algorithm is used by this command (GCP, RPC, others...). Do you have
The i.ortho.photo implementation follows the algorithms
described in this book:
Elements of Photogrammetry, With Air Photo Interpretation and
Remote Sensing by Paul R. Wolf, 562 pages
Publisher: McGraw Hill Text; 2nd edition (January 1983)
You can still find it for a few Euros/Dollars.
In GRASS 5, there is a src/libes/image3/ library which is
an extended version including LANDSAT ortho-rectification but
it was never completed (as far as I know). Related commands
are i.points3 and i.rectify3 in GRASS 5. It would be great
if capable programmer(s) make this code (treasure?) ready
for GRASS 6.
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