12 bit JPEG in TIFF

[Charles Auer]

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I was able to build the CVS version of LibTiff 4.0 with 2 linked copies of LibJPEG (an 8 bit copy and a 12 bit copy) as described at:

 

http://trac.osgeo.org/gdal/wiki/TIFF12BitJPEG

 

I was able to find 12 bit JPEG in TIFF test images at 2 sites:

 

http://www.awaresystems.be/imaging/tiff/12bpsjpegintiff.zip

 

ftp://ftp.graphicsmagick.org/pub/outgoing/mandrill-12bit-JPEG-TIFF.zip

 

 

While I was able to decode the majority of these test images, one image in particular has given me problems:

 

ITULAB.tif   (contained in the 12bpsjpegintiff.zip archive). 

 

I had no trouble decoding the other colorspace images (CMYK.tif, Grayscale.tif, RGB.tif, or YCbCr.tif).  I think I could figure this out if I had a more simple image to work with.  Has anyone constructed an 8 bit ITULAB JPEG in TIFF image?

 

Charles

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