<div dir="ltr">Boa tarde,<div><br></div><div>Julgo que a questão será direccionada para os GDAL masters :)</div><div><br></div><div>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.</div><div><br></div><div>Compressão para o ficheiro de saída TIF não é requisito para já.</div><div><br></div><div>Segue a informação obtida pelo GDALINFO do ficheiro de origem.</div><div><br></div><div>Obrigado! :)</div><div><br></div><div><div>Driver: JP2MrSID/MrSID JPEG2000</div><div>Files: pu_luz_zonamento.jp2</div><div> pu_luz_zonamento.jp2.ovr</div><div> pu_luz_zonamento.jp2.aux.xml</div><div>Size is 6636, 6122</div><div>Coordinate System is:</div><div>PROJCS["ETRS_1989_TM06-Portugal",</div><div> GEOGCS["GCS_ETRS_1989",</div><div> DATUM["European_Terrestrial_Reference_System_1989",</div><div> SPHEROID["GRS_1980",6378137,298.257222101,</div><div> AUTHORITY["EPSG","7019"]],</div><div> AUTHORITY["EPSG","6258"]],</div><div> PRIMEM["Greenwich",0],</div><div> UNIT["degree",0.0174532925199433]],</div><div> PROJECTION["Transverse_Mercator"],</div><div> PARAMETER["latitude_of_origin",39.66825833333333],</div><div> PARAMETER["central_meridian",-8.133108333333333],</div><div> PARAMETER["scale_factor",1],</div><div> PARAMETER["false_easting",0],</div><div> PARAMETER["false_northing",0],</div><div> UNIT["metre",1,</div><div> AUTHORITY["EPSG","9001"]]]</div><div>Origin = (37881.833519887965000,-285245.409715688320000)</div><div>Pixel Size = (0.169333333333329,-0.169333333333331)</div><div>Metadata:</div><div> Corder=PCRL</div><div> GEOTIFF_CHAR__GeogAngularUnitsGeoKey=Angular_Degree</div><div> GEOTIFF_CHAR__GeogGeodeticDatumGeoKey=Datum_European_Reference_System_1989</div><div> GEOTIFF_CHAR__GeographicTypeGeoKey=User-Defined</div><div> GEOTIFF_CHAR__GTModelTypeGeoKey=ModelTypeProjected</div><div> GEOTIFF_CHAR__GTRasterTypeGeoKey=RasterPixelIsArea</div><div> GEOTIFF_CHAR__ProjCoordTransGeoKey=CT_TransverseMercator</div><div> GEOTIFF_CHAR__ProjectedCSTypeGeoKey=User-Defined</div><div> GEOTIFF_CHAR__ProjectionGeoKey=User-Defined</div><div> GEOTIFF_CHAR__ProjLinearUnitsGeoKey=Linear_Meter</div><div> GEOTIFF_NUM__1024__GTModelTypeGeoKey=1</div><div> GEOTIFF_NUM__1025__GTRasterTypeGeoKey=1</div><div> GEOTIFF_NUM__1026__GTCitationGeoKey=PCS Name = ETRS_1989_TM06-Portugal</div><div> GEOTIFF_NUM__2048__GeographicTypeGeoKey=32767</div><div> GEOTIFF_NUM__2049__GeogCitationGeoKey=GCS Name = GCS_ETRS_1989|Ellipsoid = GRS_1980|Primem = Greenwich|</div><div> GEOTIFF_NUM__2050__GeogGeodeticDatumGeoKey=6258</div><div> GEOTIFF_NUM__2054__GeogAngularUnitsGeoKey=9102</div><div> GEOTIFF_NUM__2057__GeogSemiMajorAxisGeoKey=6378137.000000</div><div> GEOTIFF_NUM__2059__GeogInvFlatteningGeoKey=298.257222</div><div> GEOTIFF_NUM__2061__GeogPrimeMeridianLongGeoKey=0.000000</div><div> GEOTIFF_NUM__3072__ProjectedCSTypeGeoKey=32767</div><div> GEOTIFF_NUM__3074__ProjectionGeoKey=32767</div><div> GEOTIFF_NUM__3075__ProjCoordTransGeoKey=1</div><div> GEOTIFF_NUM__3076__ProjLinearUnitsGeoKey=9001</div><div> GEOTIFF_NUM__3080__ProjNatOriginLongGeoKey=-8.133108</div><div> GEOTIFF_NUM__3081__ProjNatOriginLatGeoKey=39.668258</div><div> GEOTIFF_NUM__3082__ProjFalseEastingGeoKey=0.000000</div><div> GEOTIFF_NUM__3083__ProjFalseNorthingGeoKey=0.000000</div><div> GEOTIFF_NUM__3092__ProjScaleAtNatOriginGeoKey=1.000000</div><div>Image Structure Metadata:</div><div> INTERLEAVE=PIXEL</div><div>Corner Coordinates:</div><div>Upper Left ( 37881.834, -285245.410) ( 7d42'25.13"W, 37d 5'52.09"N)</div><div>Lower Left ( 37881.834, -286282.068) ( 7d42'25.32"W, 37d 5'18.46"N)</div><div>Upper Right ( 39005.530, -285245.410) ( 7d41'39.62"W, 37d 5'51.92"N)</div><div>Lower Right ( 39005.530, -286282.068) ( 7d41'39.82"W, 37d 5'18.29"N)</div><div>Center ( 38443.682, -285763.739) ( 7d42' 2.47"W, 37d 5'35.19"N)</div><div>Band 1 Block=1024x128 Type=Byte, ColorInterp=Red</div><div> Min=0.000 Max=255.000 </div><div> Minimum=0.000, Maximum=255.000, Mean=236.038, StdDev=66.045</div><div> NoData Value=256</div><div> Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192</div><div> Metadata:</div><div> STATISTICS_COVARIANCES=4361.995430900208,2244.864802420663,3368.225850604773</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=236,03793160725</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_SKIPFACTORX=1</div><div> STATISTICS_SKIPFACTORY=1</div><div> STATISTICS_STDDEV=66,045404313247</div><div> Image Structure Metadata:</div><div> COMPRESSION=JP2000</div><div>Band 2 Block=1024x128 Type=Byte, ColorInterp=Green</div><div> Min=0.000 Max=255.000 </div><div> Minimum=0.000, Maximum=255.000, Mean=218.476, StdDev=87.277</div><div> NoData Value=256</div><div> Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192</div><div> Metadata:</div><div> STATISTICS_COVARIANCES=2244.864802420663,7617.276745283226,7051.036243014802</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=218,47574597805</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_SKIPFACTORX=1</div><div> STATISTICS_SKIPFACTORY=1</div><div> STATISTICS_STDDEV=87,277011551056</div><div> Image Structure Metadata:</div><div> COMPRESSION=JP2000</div><div>Band 3 Block=1024x128 Type=Byte, ColorInterp=Blue</div><div> Min=0.000 Max=255.000 </div><div> Minimum=0.000, Maximum=255.000, Mean=215.145, StdDev=92.105</div><div> NoData Value=256</div><div> Overviews: 3318x3061, 1659x1531, 830x766, 415x383, 208x192</div><div> Metadata:</div><div> STATISTICS_COVARIANCES=3368.225850604773,7051.036243014802,8483.403263628108</div><div> STATISTICS_MAXIMUM=255</div><div> STATISTICS_MEAN=215,14531106402</div><div> STATISTICS_MINIMUM=0</div><div> STATISTICS_SKIPFACTORX=1</div><div> STATISTICS_SKIPFACTORY=1</div><div> STATISTICS_STDDEV=92,105392152838</div><div> Image Structure Metadata:</div><div> COMPRESSION=JP2000</div><div><br></div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Regards, <div>Marco Afonso</div><div><a href="http://goo.gl/ZDtQjm" target="_blank">http://goo.gl/ZDtQjm</a><br></div><div><span></span><img src="https://dl.dropboxusercontent.com/u/17607469/qr.png"><br></div></div></div>
</div></div>