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From: raja@bombay.cps.msu.edu (Narayan S. Raja)
Newsgroups: comp.graphics
Subject: Trouble with TIFF format
Message-ID: <1990Dec5.183212.29252@msuinfo.cl.msu.edu>
Date: 5 Dec 90 18:32:12 GMT
Sender: news@msuinfo.cl.msu.edu
Reply-To: raja@cpswh.cps.msu.edu
Organization: PRIP Lab, Comp. Sci. Dept., MSU
Lines: 43


We have a MacIIfx used for color imaging 
using a camera or a flatbed scanner.  We 
can save the images in TIFF format.  The
problem is that we're having trouble
converting to any other image format
(which we need to do for further processing
on our Suns).  I have tried conversion
using libtiff (tiff2ras), pbmplus (tifftopgm), 
fbm (tiff2fbm), and ImageMagick (TIFFtoMIFF) 
filters.  In all cases, the trouble seems to 
be due to:   
                
        a. Unsupported feature: Unknown Tag
        b. Missing StripByteCounts

The unknown tag is apparently 43314 (0xa932).

The version of libtiff we have is for
TIFF revision 5.0

Here is the tiffdump info for a typical
438 X 291 8-bit color image:

------------------------------------
chroma> /home/surya/raja/X/tmp/tiff/tools/tiffdump Geese.tiff
Magic: 0x4d4d <big-endian> Version: 0x2a
Directory 0: offset 8 (0x8)
OldSubFileType (255) SHORT (3) 1<1>
ImageWidth (256) SHORT (3) 1<438>
ImageLength (257) SHORT (3) 1<291>
BitsPerSample (258) SHORT (3) 1<8>
Photometric (262) SHORT (3) 1<0>
StripOffsets (273) LONG (4) 1<768>
43314 (0xa932) LONG (4) 1<256>
------------------------------------

Any ideas?  Email preferred... thanks in
advance,


Narayan Sriranga Raja.
raja@cpswh.cps.msu.edu


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