[Geotiff] deskewing
Frank Warmerdam
warmerdam at pobox.com
Tue Jan 16 11:37:59 EST 2007
Zoltan Szecsei wrote:
> Hi,
> Is there an easy utility (linux commandline preferable, but windows OK)
> to de-skew a geo-referenced scanned map?
> Typically the TFW files look like this:
>
> 0.317469
> 0.001049
> 0.000994
> -0.317666
> -19902.462151
> -3208549.358736
>
>
> Why is the row-rotation different from the column rotation?
Zoltan,
The gdalwarp utility will produce a nice "north up" image from a rotated
or skewed tiff+world (or geotiff).
eg.
gdalwarp skewed_input.tif northup_output.tif
The FWTools suite includes the gdalwarp command.
http://fwtools.maptools.org/
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | President OSGeo, http://osgeo.org
More information about the Geotiff
mailing list