Hi, You use ASTER data? Am I right that ASTER is public available? I played 2 years ago with the ASTER data as it was initially released. It has great resolution, but it had also lots of artefacts. Do you use raw or somehow corrected ASTER data? - As you can see, I'm on the never ending quest for public available DEM and texture data :)
Well, in the DEM raster data, some value represents zero meters elevation. To achieve a smooth transition, you should blend at the border of your source images from your original value to that null value. In a geotiff, this would be a blending of the grey value (which represents the elevation). You can perform this blending in a graphical software like gimp. Your blending zone has to be a "frame" at the border of your DEM region. You have to blend from the original elevation value to the 0 meters elevation value -for example with a alpha value ramp (inside your blending zone 100% elevation and 0% 0-meters-color, at the outer border of your DEM-Data 0% elevation and 100% 0-meters-color) Sorry for that bad explanation.. :) Cheers, Torben ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=39454#39454 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
