Muito obrigado Pedro Monteiro :) No dia 19 de outubro de 2016 às 15:33, Pedro Monteiro < monteiro.s.pe...@gmail.com> escreveu:
> 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 > -- Regards, Marco Afonso http://goo.gl/ZDtQjm
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