I never use gdal_retile, but i use gdaladdo. It's perfect and there's no qualtity degradation. gdaladdo create one tiff (or other format if you want) overview, containing different level. Syntax : gdaladdo -ro filename 2 4 8 16 32 http://www.gdal.org/gdaladdo.html
2011/3/15 Devrim Baris Acar <[email protected]> > Hi, > I am building a pyramid from a 650 MB geotiff file (rgb) , with the > following command from fwtools 2.4.6 on a win32 box > > gdal_retile -levels 5 -pyramidOnly -targetDir pyramid bathymetry. > > I loaded these image files to geoserver and see that when I zoomed to the > higheest available level, the images are "degraded in quality" in > comparison to original one. > Also , I expected that the resulting pyramid size to be bigger than the > original file size, but it is NOT. > > What is the reason for this , any ideas, and solutions? > > Best regards, > > Devrim Baris Acar > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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