Alexander, Any chance you can make your data available for testing? I would like to see whether osgEarth exhibits the same issue.
Glenn Waldron : Pelican Mapping On Mon, Aug 9, 2010 at 6:18 AM, Alexander Bobkov <[email protected]> wrote: > Hi, > > maybe my previous message was a bit vague. I'll try to explain my problem > more accurately. > I have a georeferenced image with a road in high resolution (0.5m). And I > have a vector road in KML-file made with Google Earth. > There is exact match between vector road and raster road in Google Earth. > I have even made a test in QuantumGIS: I added there the image and KML-file > and got the same result - vector road is on raster road. > > But when I place vector road on a VPB terrain, the road is shifted to the > west. > > There is two logical explanations: > 1) Error with the texture in VPB or OSG > 2) Error in osg::EllipsoidModel > > This is gdalinfo for my image: > > Driver: GTiff/GeoTIFF > Files: GeoEye_fus_50sm.tif > Size is 39877, 25458 > Coordinate System is: > GEOGCS["WGS 84", > DATUM["WGS_1984", > SPHEROID["WGS 84",6378137,298.2572235629972, > AUTHORITY["EPSG","7030"]], > AUTHORITY["EPSG","6326"]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433], > AUTHORITY["EPSG","4326"]] > Origin = (160.053108789177884,54.496583902721099) > Pixel Size = (0.000006107432741,-0.000006107432741) > Metadata: > AREA_OR_POINT=Area > Image Structure Metadata: > INTERLEAVE=PIXEL > Corner Coordinates: > Upper Left ( 160.0531088, 54.4965839) (160d 3'11.19"E, 54d29'47.70"N) > Lower Left ( 160.0531088, 54.3411009) (160d 3'11.19"E, 54d20'27.96"N) > Upper Right ( 160.2966549, 54.4965839) (160d17'47.96"E, 54d29'47.70"N) > Lower Right ( 160.2966549, 54.3411009) (160d17'47.96"E, 54d20'27.96"N) > Center ( 160.1748818, 54.4188424) (160d10'29.57"E, 54d25'7.83"N) > Band 1 Block=39877x1 Type=Byte, ColorInterp=Red > Overviews: 19939x12729, 9970x6365, 4985x3183, 2493x1592, 1247x796 > Band 2 Block=39877x1 Type=Byte, ColorInterp=Green > Overviews: 19939x12729, 9970x6365, 4985x3183, 2493x1592, 1247x796 > Band 3 Block=39877x1 Type=Byte, ColorInterp=Blue > Overviews: 19939x12729, 9970x6365, 4985x3183, 2493x1592, 1247x796 > > Regards, > Alexander > > > 07.08.2010 13:23, Александр Бобков пишет: > > Hi, >> >> I have a georeferenced image with resolution 0.5m. This image was added to >> Google Earth Pro and there was created several paths and marks. This is >> screenshot from Google Earth with a path: >> http://img155.imageshack.us/i/googleearth.jpg/ >> >> Then I created a VPB terrain with the same image. I exported paths from >> Google Earth to KML file, got geocoordinates and placed them on the VPB >> terrain. Here is screenshot from the VPB terrain: >> http://img175.imageshack.us/i/openscenegraph.png/ >> >> As you can see, there is a small constant shift to the west. Approximately >> 1m. How can I fix this shift? What is the reason for it? >> >> I use osg::EllipsoidModel to convert coordinates. Coordinates in KML file >> have a very high precision. For example: 160.1361826749267, >> 54.43656637255538, 0 >> >> Regards, >> Alexander >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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