On Mon, Jun 18, 2012 at 6:28 PM, <[email protected]> wrote:

> Hi Daniele, Hi Andrea, Hi GeoTools community,
>
> recently I was trying to geo-rectify a JPG with WarpTransform2D, however,
> the result was not as good as the result of "gdalwarp -tps" with the GCPs
> used. Today I've found the org.geoserver.wps.gs.GeorectifyCoverage class
>
> http://svn.codehaus.org/geoserver/trunk/src/extension/wps/wps-core/src/main/java/org/geoserver/wps/gs/GeorectifyCoverage.java
>
> I was wondering if there already exists such kind of Warp Interface to the
> gdal extension available in GeoTools?
> I'm using GeoTools 2.7.1
>

There is not. The above process is just a wrapper around GCP


> Somehow, the warped imaged (written to GeoTIFF) by WarpTransform2D with a
> degree > 1 results in a miss-tranformation or an empty image even if I use
> plenty of GCPs. Using degree=1 results in a somehow good
> transformation/rectification (but not as good as gdalwarp on comand line,
> like mentioned).
> Has someone experienced equivalent or much better warp transformation with
> WarpTransform2D VS gdalwarp (e.g. when using up to 40 GCPs)?
>

How did you feed GCPs into a WarpTransform2D?

Cheers
Andrea

-- 
Ing. Andrea Aime
GeoSolutions S.A.S.
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