[Gdal-dev] GTiff / gdal_translate / CMYK - problem
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_00017_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 gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] ogr2gui - project development
Frank, and all, What would you think of adding a OGR related projects / resources to the OGR website that could link to projects like this ogr2gui and perhaps translated docs (e.g. http://softlibre.gloobe.org/doku.php/gdal_ogr/start) and any external resources that may be of interest to GDAL/OGR users? Daniel Mathieu Lahaye wrote: Hi, My company developed a graphical user interface (GUI) for ogr2ogr. We created an open source project called ogr2gui. We intend to make this application available to GIS users who aren’t comfortable with the ogr2ogr syntax or looking for a fast, easy and free geospatial data translator. You can download the source code or the installer at: inventis.ca/ogr2gui Note that this is only RC 0.1 and only few data formats are supported. We’ll add some more as soon as possible… We’re currently looking for some people who’d like to get involved in this utility program development. We’d also like to get some feedback about the project…do you think it’s useful? should it looks different? functions we should add or remove, etc. All comments or suggestions are welcome! Thanks, **Mathieu Lahaye** [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] www.inventis.ca http://www.inventis.ca ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Daniel Morissette http://www.mapgears.com/ ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [Gdal-dev] GTiff / gdal_translate / CMYK - problem
Maksim Sestic wrote: 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. Maksim, I would note that CMYK photometric interpretation requires 4 bands. Furthermore, GDAL does *not* manage the conversion to CMYK color space. You would need to do that ahead of time by some means. I've never tried to create CMYK files so I don't have any further advice. Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
[gdal-dev] SoC Final Report: GDAL TMS driver
Folks, I received the following report from Václav on the GDAL TMS driver status: Since the final deadline has approached, I am sending you the result of my futile attempt to implement the TMS driver. The reading part sort of works. The driver always assumes Origin is in the bottom left corner of the map. There is no support for profiles and projections. It will read the raster data from disk. I could not get the writing right. During testing, gdal_translate regularily calls methods on dataset that has already been deleted, don't know why. The driver will write the xml resource file, create the directory structure and fill it with empty tiles. Writing after this point doesn't work, the cached tiles won't be written and for the life of me I don't know why. Also the IRasterIO implementation is probably bogus too, since gdal_translate calls IWriteBlock only on the TopRasterBand instead of on all overviews as it should. There are no output settings, tiles are hardcoded to PNG, 256x256 pixels. I have uploaded the source he supplied into /spike/tms in the GDAL subversion and added some notes on how to build and test it at: http://trac.osgeo.org/gdal/wiki/SoCTMSDriver The project period is over, and it isn't clear whether Václav will be doing any more work on the driver. I'm available to consult and help with anyone wanting to carry this effort forward. For the time being the project artifacts are captured in the wiki and subversion and should not be lost. Best regards, FrankW ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
