Hello Martin
thanks for your quick response.
The Transformation works. But when I try to use the Image, which I can get
with coverage.getRenderedImage(), e.g encoding the Image or draw it to an
graphics like this (drawRenderedImage(RenderedImage,
AffineTransform.getTranslateInstance(0,0));) I got the following Exception:
java.lang.NullPointerException
at
com.sun.media.jai.iterator.RandomIterFallback.makeCurrent(RandomIterFallback.
java:110)
at
com.sun.media.jai.iterator.RandomIterFallback.getSample(RandomIterFallback.ja
va:117)
at
com.sun.media.jai.opimage.WarpNearestOpImage.computeRectInt(WarpNearestOpImag
e.java:362)
at
com.sun.media.jai.opimage.WarpNearestOpImage.computeRect(WarpNearestOpImage.j
ava:108)
at javax.media.jai.WarpOpImage.computeTile(WarpOpImage.java:577)
at
com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:90
4)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.RenderedOp.getTile(RenderedOp.java:2257)
at
sun.java2d.SunGraphics2D.drawTranslatedRenderedImage(SunGraphics2D.java:2542)
at
sun.java2d.SunGraphics2D.drawRenderedImage(SunGraphics2D.java:2429)
...
Do you have an idea how to solve this problem?
Thanks a lot
Tim
-----Ursprüngliche Nachricht-----
Von: Martin Desruisseaux [mailto:[EMAIL PROTECTED]
Gesendet: Donnerstag, 23. August 2007 12:56
An: Tim Englich
Cc: [email protected]
Betreff: Re: [Geotools-gt2-users] Image Transformation form one CRS to
an other
Tim Englich a écrit :
>> I am looking for a possibility to transform an georefrenced image to an
>> other coordinatereferencesystem.
>> E.g. from EPSG:4326 to EPSG:32632
>> Provide GeoTools such a functionality? Do anyone know a (Java)-library
>> which can do that.
CoordinateReference sourceCRS = CRS.decode("EPSG:4326");
CoordinateReference targetCRS = CRS.decode("EPSG:32632");
RenderedImage image = ...
Envelope imageEnvelope = ...
imageEnvelope.setCoordinateReferenceSystem(sourceCRS);
GridCoverage2D coverage = coverageFactory.create("My coverage", image,
envelope);
coverage = Operations.DEFAULT.resample(coverage, targetCRS);
Martin
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