[Gdal-dev] JP2 geo info question

[Simpson]

Greetings,

I am trying to re-encode a JP2 with gdal->jasper to see if encoding is
related to a MapServer problem I'm having.

I convert to GeoTiff first and gdalinfo shows all geo information still ok.

Then I convert the GeoTiff to a JP2.

gdalinfo->mrsid sdk on the JP2 reports no geo info.
mrsidinfo on the JP2 reports no geo info.
gdalinfo->jasper on the JP2 reports geo info.

Does Jasper encode the geo info differently in the JP2?
Will this cause issues when rendering maps from mapserver->gdal->mrsid sdk?
If so, can one use a world file for JP2s?

I found mapserver->gdal->jasper too slow for serving maps.

Thanks for any info,
Drew.

gdal 1.2.5
jasper 1.701.0
linux 2.4.20-28.8

========= GDALINFO OF GEOTIFF ====================
Driver: GTiff/GeoTIFF
Size is 6269, 7016
Coordinate System is `'
Origin = (512303.195000,3041873.243000)
Pixel Size = (1.00000000,-1.00000000)
Metadata:
  ...
  IMAGE__XY_ORIGIN=512303.695000,3041872.743000
  IMAGE__X_RESOLUTION=1.000000
  IMAGE__Y_RESOLUTION=1.000000
  IMAGE__INPUT_FILE_SIZE=6677134.000000
Corner Coordinates:
Upper Left  (  512303.195, 3041873.243)
Lower Left  (  512303.195, 3034857.243)
Upper Right (  518572.195, 3041873.243)
Lower Right (  518572.195, 3034857.243)
Center      (  515437.695, 3038365.243)
Band 1 Block=6269x1 Type=Byte, ColorInterp=Red
Band 2 Block=6269x1 Type=Byte, ColorInterp=Green
Band 3 Block=6269x1 Type=Byte, ColorInterp=Blue


============== GDALINFO->MRSID SDK OF RESULTING JP2 ======================
Driver: MrSID/Multi-resolution Seamless Image Database (MrSID)
Size is 6269, 7016
Coordinate System is `'
Metadata:
  GEOTIFF_NUM__1025=1
  IMAGE__WIDTH=6269
  IMAGE__HEIGHT=7016
  IMAGE__COLOR_SCHEME=0
  IMAGE__DATA_TYPE=0
  IMAGE__DYNAMIC_RANGE_WINDOW=256.000000
  IMAGE__DYNAMIC_RANGE_LEVEL=127.500000
  IMAGE__XY_ORIGIN=0.000000,7015.000000
  IMAGE__X_RESOLUTION=1.000000
  IMAGE__Y_RESOLUTION=1.000000
  IMAGE__INPUT_FILE_SIZE=40376283.000000
Corner Coordinates:
Upper Left  (    0.0,    0.0)
Lower Left  (    0.0, 7016.0)
Upper Right ( 6269.0,    0.0)
Lower Right ( 6269.0, 7016.0)
Center      ( 3134.5, 3508.0)
Band 1 Block=6269x64 Type=Byte, ColorInterp=Red
  Overviews: 3135x3508, 1567x1754, 784x877, 392x439
Band 2 Block=6269x64 Type=Byte, ColorInterp=Green
  Overviews: 3135x3508, 1567x1754, 784x877, 392x439
Band 3 Block=6269x64 Type=Byte, ColorInterp=Blue
  Overviews: 3135x3508, 1567x1754, 784x877, 392x439

============== GDALINFO->JASPER OF RESULTING JP2 ======================
Driver: JPEG2000/JPEG-2000 part 1 (ISO/IEC 15444-1)
Size is 6269, 7016
Coordinate System is `'
Origin = (512303.195000,3041873.243000)
Pixel Size = (1.00000000,-1.00000000)
Corner Coordinates:
Upper Left  (  512303.195, 3041873.243)
Lower Left  (  512303.195, 3034857.243)
Upper Right (  518572.195, 3041873.243)
Lower Right (  518572.195, 3034857.243)
Center      (  515437.695, 3038365.243)
Band 1 Block=6269x7016 Type=Byte, ColorInterp=Red
Band 2 Block=6269x7016 Type=Byte, ColorInterp=Green
Band 3 Block=6269x7016 Type=Byte, ColorInterp=Blue