On 3/27/06, Nicolas Labombarda <[EMAIL PROTECTED]> wrote: > > Hi, I am working with an .ecw compressed raster image. I did the compression > in ER Mapper. My question is why the compressed image is so different in > visual quality than the original geotiff. > It's normal to lose so much quality or I am doing something wrong? > > thanks a lot > > Nicolás
You are doing something wrong. The compressed image should look almost identical to the original. Is your original image larger than 500MB? I think the compressor downsamples larger images. However you can use FWTools ECW to compress arbitrairly large files. (http://www.remotesensing.org/gdal/). Or you can tile your soruce image before compressing. Rich -- Richard Greenwood [EMAIL PROTECTED] www.greenwoodmap.com _______________________________________________ MapInfo-L mailing list MapInfo-L@lists.directionsmag.com http://www.directionsmag.com/mailman/listinfo/mapinfo-l
