[gdal-dev] DigitalGlobe Image Not Displaying Correctly

Bob Bruce Bob.Bruce at shaw.ca
Wed Jan 6 19:44:02 EST 2010


Hi:     when we try and display a DigitalGlobe image in QGIS we only see a dark green land mass and a slightly lighter green water area. The JPG image that came with it showed a lot of variation in colour. Could someone please have a look at the GDALINFO listing of the image below and help me with ideas of how to make this image work with our packages?Help would be much appreciated, the only thing unusual that I can find with this image is that on the lines at the end that list the bands, the values "x96" appear whereas with my other colour GeoTIFF images they have "x1" in each band.Is there some way to use GDAL to convert this image to a more useable form?thanks,            Bob BruceD:\>gdalinfo 02AUG25172538-S2AS-052024713010_01_P001.TIF<BR>Driver: GTiff/GeoTIFF<BR>Files: 02AUG25172538-S2AS-052024713010_01_P001.TIF<BR>Size is 10834, 15440<BR>Coordinate System is:<BR>PROJCS["NAD83 / UTM zone 14N",<BR>    GEOGCS["NAD83",<BR>        DATUM["North_American_Datum_1983",<BR>            SPHEROID["GRS 1980",6378137,298.2572221009903,<BR>                AUTHORITY["EPSG","7019"]],<BR>            AUTHORITY["EPSG","6269"]],<BR>        PRIMEM["Greenwich",0],<BR>        UNIT["degree",0.0174532925199433],<BR>        AUTHORITY["EPSG","4269"]],<BR>    PROJECTION["Transverse_Mercator"],<BR>    PARAMETER["latitude_of_origin",0],<BR>    PARAMETER["central_meridian",-99],<BR>    PARAMETER["scale_factor",0.9996],<BR>    PARAMETER["false_easting",500000],<BR>    PARAMETER["false_northing",0],<BR>    UNIT["metre",1,<BR>        AUTHORITY["EPSG","9001"]],<BR>    AUTHORITY["EPSG","26914"]]<BR>Origin = (685515.000000000000000,5635990.200000000200000)<BR>Pixel Size = (0.600000000000000,-0.600000000000000)<BR>Metadata:<BR>  AREA_OR_POINT=Area<BR>  TIFFTAG_IMAGEDESCRIPTION={<BR>  bandList =<BR>  [<BR>    3;<BR>    2;<BR>    1;<BR>  ]<BR>}<BR>  TIFFTAG_DATETIME=2008:06:26 16:19:24<BR>  TIFFTAG_COPYRIGHT=(C) COPYRIGHT 2008 DigitalGlobe, Inc., Longmont CO USA 80503<BR>  TIFFTAG_MINSAMPLEVALUE=0<BR>  TIFFTAG_MAXSAMPLEVALUE=140<BR>Image Structure Metadata:<BR>  INTERLEAVE=BAND<BR>Corner Coordinates:<BR>Upper Left  (  685515.000, 5635990.200) ( 96d21'53.02"W, 50d50'44.99"N)<BR>Lower Left  (  685515.000, 5626726.200) ( 96d22'9.87"W, 50d45'45.39"N)<BR>Upper Right (  692015.400, 5635990.200) ( 96d16'20.99"W, 50d50'37.35"N)<BR>Lower Right (  692015.400, 5626726.200) ( 96d16'38.43"W, 50d45'37.78"N)<BR>Center      (  688765.200, 5631358.200) ( 96d19'15.58"W, 50d48'11.41"N)<BR>Band 1 Block=10834x96 Type=Byte, ColorInterp=Red<BR>Band 2 Block=10834x96 Type=Byte, ColorInterp=Green<BR>Band 3 Block=10834x96 Type=Byte, ColorInterp=Blue


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