Hi all, I'm having troubles with gdal_translate while creating uncompressed 3-band GTiff with CMYK photometric representation. Well, at least CMYK representation recognized by Photoshop, which is PhotometricInterpretation=5. If I use recommended gdal_translate -co 'PHOTOMETRIC=CMYK' switch I keep getting "grayscale" (!) result, again, that's what Photoshop says (PhotometricInterpretation=1).
What other -co parameters should I set to make it work? I'm using gdal_translate from FWTools 2.2.3 Here's the gdalinfo reports: 1) For RGB raster parsed with gdal_translate -co 'PHOTOMETRIC=CMYK' switch: Size is 945, 945 Coordinate System is `' Metadata: AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MyApp TIFFTAG_DATETIME=20.08.2008 02:51:37 TIFFTAG_XRESOLUTION=240 TIFFTAG_YRESOLUTION=240 TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch) Image Structure Metadata: INTERLEAVE=PIXEL Corner Coordinates: Upper Left ( 0.0, 0.0) Lower Left ( 0.0, 945.0) Upper Right ( 945.0, 0.0) Lower Right ( 945.0, 945.0) Center ( 472.5, 472.5) Band 1 Block=945x2 Type=Byte, ColorInterp=Gray Band 2 Block=945x2 Type=Byte, ColorInterp=Undefined Band 3 Block=945x2 Type=Byte, ColorInterp=Undefined Side note: I also tried using -co 'PHOTOMETRIC=YCBCR' and 'PHOTOMETRIC=CIELAB'switches but then gdal_translate crashes. 2) Photoshopped tiff with CMYK mode set (that's what I need to get): Driver: GTiff/GeoTIFF Files: 080417_75008_000000017_CMYK.tif Size is 945, 945 Coordinate System is `' Metadata: TIFFTAG_SOFTWARE=Adobe Photoshop CS3 Windows TIFFTAG_DATETIME=2008:08:20 02:21:08 TIFFTAG_XRESOLUTION=240 TIFFTAG_YRESOLUTION=240 TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch) Image Structure Metadata: INTERLEAVE=PIXEL Corner Coordinates: Upper Left ( 0.0, 0.0) Lower Left ( 0.0, 945.0) Upper Right ( 945.0, 0.0) Lower Right ( 945.0, 945.0) Center ( 472.5, 472.5) Band 1 Block=945x2 Type=Byte, ColorInterp=Undefined Band 2 Block=945x2 Type=Byte, ColorInterp=Undefined Band 3 Block=945x2 Type=Byte, ColorInterp=Undefined Band 4 Block=945x2 Type=Byte, ColorInterp=Undefined Also, there's another Photoshop's TIFF tag, "NativeDigest", which I don't really get (it's not recognized by gdalinfo) - here's the xmp output: <tiff:NativeDigest xmlns:tiff="http://ns.adobe.com/tiff/1.0/";>256,257,258,259,262,274,277,284,530,531,282,283,296,301,318,319,529,532,306,270,271,272,305,315,33432;46BB973B26CC7DED3A1C59F8F9AC7EC5</tiff:NativeDigest> Regards, Maksim Sestic -- View this message in context: http://www.nabble.com/GTiff---gdal_translate---CMYK---problem-tp19066003p19066003.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
