Boa tarde, Penso que o mais simples será criar um raster virtual com transparência, e posteriormente fazer a conversão deste para tif
Exemplo: 1. gdalbuildvrt -srcnodata "255 255 255" destino.vrt entrada.jpg 2. gdal_translate -of Gtiff destino.vrt destino.tif Cumprimentos, Pedro Monteiro On Wed, Oct 19, 2016 at 2:13 PM Marco Afonso <mafonso...@gmail.com> wrote: > Boa tarde, > > Julgo que a questão será direccionada para os GDAL masters :) > > Gostaria de saber se é possível converter um ficheiro no formato JP2000 > para TIF com transparência. Se possível definir a côr branco (RGB 255 255 > 255) para transparência. > > Compressão para o ficheiro de saída TIF não é requisito para já. > > Segue a informação obtida pelo GDALINFO do ficheiro de origem. > > Obrigado! :) > > Driver: JP2MrSID/MrSID JPEG2000 > Files: pu_luz_zonamento.jp2 > pu_luz_zonamento.jp2.ovr > pu_luz_zonamento.jp2.aux.xml > Size is 6636, 6122 > Coordinate System is: > PROJCS["ETRS_1989_TM06-Portugal", > GEOGCS["GCS_ETRS_1989", > DATUM["European_Terrestrial_Reference_System_1989", > SPHEROID["GRS_1980",6378137,298.257222101, > AUTHORITY["EPSG","7019"]], > AUTHORITY["EPSG","6258"]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433]], > PROJECTION["Transverse_Mercator"], > PARAMETER["latitude_of_origin",39.66825833333333], > PARAMETER["central_meridian",-8.133108333333333], > PARAMETER["scale_factor",1], > PARAMETER["false_easting",0], > PARAMETER["false_northing",0], > UNIT["metre",1, > AUTHORITY["EPSG","9001"]]] > Origin = (37881.833519887965000,-285245.409715688320000) > Pixel Size = (0.169333333333329,-0.169333333333331) > Metadata: > Corder=PCRL > GEOTIFF_CHAR__GeogAngularUnitsGeoKey=Angular_Degree > > GEOTIFF_CHAR__GeogGeodeticDatumGeoKey=Datum_European_Reference_System_1989 > GEOTIFF_CHAR__GeographicTypeGeoKey=User-Defined > GEOTIFF_CHAR__GTModelTypeGeoKey=ModelTypeProjected > GEOTIFF_CHAR__GTRasterTypeGeoKey=RasterPixelIsArea > GEOTIFF_CHAR__ProjCoordTransGeoKey=CT_TransverseMercator > GEOTIFF_CHAR__ProjectedCSTypeGeoKey=User-Defined > GEOTIFF_CHAR__ProjectionGeoKey=User-Defined > GEOTIFF_CHAR__ProjLinearUnitsGeoKey=Linear_Meter > GEOTIFF_NUM__1024__GTModelTypeGeoKey=1 > GEOTIFF_NUM__1025__GTRasterTypeGeoKey=1 > GEOTIFF_NUM__1026__GTCitationGeoKey=PCS Name = ETRS_1989_TM06-Portugal > GEOTIFF_NUM__2048__GeographicTypeGeoKey=32767 > GEOTIFF_NUM__2049__GeogCitationGeoKey=GCS Name = GCS_ETRS_1989|Ellipsoid > = GRS_1980|Primem = Greenwich| > GEOTIFF_NUM__2050__GeogGeodeticDatumGeoKey=6258 > GEOTIFF_NUM__2054__GeogAngularUnitsGeoKey=9102 > GEOTIFF_NUM__2057__GeogSemiMajorAxisGeoKey=6378137.000000 > GEOTIFF_NUM__2059__GeogInvFlatteningGeoKey=298.257222 > GEOTIFF_NUM__2061__GeogPrimeMeridianLongGeoKey=0.000000 > GEOTIFF_NUM__3072__ProjectedCSTypeGeoKey=32767 > GEOTIFF_NUM__3074__ProjectionGeoKey=32767 > GEOTIFF_NUM__3075__ProjCoordTransGeoKey=1 > GEOTIFF_NUM__3076__ProjLinearUnitsGeoKey=9001 > GEOTIFF_NUM__3080__ProjNatOriginLongGeoKey=-8.133108 > GEOTIFF_NUM__3081__ProjNatOriginLatGeoKey=39.668258 > GEOTIFF_NUM__3082__ProjFalseEastingGeoKey=0.000000 > GEOTIFF_NUM__3083__ProjFalseNorthingGeoKey=0.000000 > GEOTIFF_NUM__3092__ProjScaleAtNatOriginGeoKey=1.000000 > Image Structure Metadata: > INTERLEAVE=PIXEL > Corner Coordinates: > Upper Left ( 37881.834, -285245.410 <285%20245%20410>) ( > 7d42'25.13"W, 37d 5'52.09"N) > Lower Left ( 37881.834, -286282.068 <286%20282%20068>) ( > 7d42'25.32"W, 37d 5'18.46"N) > Upper Right ( 39005.530, -285245.410 <285%20245%20410>) ( > 7d41'39.62"W, 37d 5'51.92"N) > Lower Right ( 39005.530, -286282.068 <286%20282%20068>) ( > 7d41'39.82"W, 37d 5'18.29"N) > Center ( 38443.682, -285763.739 <285%20763%20739>) ( 7d42' > 2.47"W, 37d 5'35.19"N) > Band 1 Block=1024x128 Type=Byte, ColorInterp=Red > Min=0.000 Max=255.000 > Minimum=0.000, Maximum=255.000, Mean=236.038, StdDev=66.045 > NoData Value=256 > Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192 > Metadata: > > STATISTICS_COVARIANCES=4361.995430900208,2244.864802420663,3368.225850604773 > STATISTICS_MAXIMUM=255 > STATISTICS_MEAN=236,03793160725 > STATISTICS_MINIMUM=0 > STATISTICS_SKIPFACTORX=1 > STATISTICS_SKIPFACTORY=1 > STATISTICS_STDDEV=66,045404313247 > Image Structure Metadata: > COMPRESSION=JP2000 > Band 2 Block=1024x128 Type=Byte, ColorInterp=Green > Min=0.000 Max=255.000 > Minimum=0.000, Maximum=255.000, Mean=218.476, StdDev=87.277 > NoData Value=256 > Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192 > Metadata: > > STATISTICS_COVARIANCES=2244.864802420663,7617.276745283226,7051.036243014802 > STATISTICS_MAXIMUM=255 > STATISTICS_MEAN=218,47574597805 > STATISTICS_MINIMUM=0 > STATISTICS_SKIPFACTORX=1 > STATISTICS_SKIPFACTORY=1 > STATISTICS_STDDEV=87,277011551056 > Image Structure Metadata: > COMPRESSION=JP2000 > Band 3 Block=1024x128 Type=Byte, ColorInterp=Blue > Min=0.000 Max=255.000 > Minimum=0.000, Maximum=255.000, Mean=215.145, StdDev=92.105 > NoData Value=256 > Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192 > Metadata: > > STATISTICS_COVARIANCES=3368.225850604773,7051.036243014802,8483.403263628108 > STATISTICS_MAXIMUM=255 > STATISTICS_MEAN=215,14531106402 > STATISTICS_MINIMUM=0 > STATISTICS_SKIPFACTORX=1 > STATISTICS_SKIPFACTORY=1 > STATISTICS_STDDEV=92,105392152838 > Image Structure Metadata: > COMPRESSION=JP2000 > > > -- > Regards, > Marco Afonso > http://goo.gl/ZDtQjm > > _______________________________________________ > Portugal mailing list > Portugal@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/portugal
_______________________________________________ Portugal mailing list Portugal@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/portugal
