Hi list, Im trying to assembly some RGBA tiff in one with gdalbuildvrt and then to translate them to a RGB TIFF tiled file YCBCR jpeg compressed.
No problem But now, I would like to get a white color in the background instead of the black. The following commands work but I get nodata (and so, black) on any white pixels whereas I just wanted to convert alpha to white The problem in on the vrt. gdalbuildvrt assembly.vrt -srcnodata b4 hidenodata -vrtnodata 255 *.tif gdal_translate -of GTIFF -b 1 -b 2 -b 3 -co COMPRESS=JPEG -co JPEG_QUALITY=95 -co TFW=YES -co BIGTIFF=YES -co ALPHA=NO -co TILED=YES -co PHOTOMETRIC=YCBCR -co PROFILE=BASELINE assembly.vrt assembly_JPG.tif gdaladdo -r gauss -ro --config COMPRESS_OVERVIEW JPEG --config JPEG_QUALITY_OVERVIEW 95 --config BIGTIFF_OVERVIEW YES --config PHOTOMETRIC_OVERVIEW YCBCR --config INTERLEAVE_OVERVIEW PIXEL --config NODATA_VALUES 255 assembly_JPG.tif 2 4 8 16 32 64 128 256 Do you have an idea? The problem is the is not init option, just -vrtnodata 255 255 255 to fix both background color but also the nodata bandper band Pierre CARREAUD Spécialiste en imagerie numérique carte_voeux_2014 LINGÉNIERIE DE LA DURABILITÉ SITES Entité Île-de-France Division du Développement Technique 2 bis avenue du Centre 92500 Rueil-Malmaison, France Tel : 01 41 39 02 00 / Fax : 01 41 39 02 01 <http://www.sites.fr/> www.sites.fr CARRES EXPERTISE cid:image002.jpg@01CB7A74.CDE1E680 INSTRUMENTATION / MESURES cid:image002.jpg@01CB7A74.CDE1E680 INGENIERIE
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