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November 2006

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2006.11.01 07:11 "How to read Old Jpeg Tags?", by Steven Lim

Hi All,
         There are some warning messages which I have faced when tried to
call TIFFOpen function:

         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 512
<0X200> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 513
<0X201> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 514
<0X202> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 515
<0X203> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 519
<0X207> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 520
<0X208> encountered
         TIFFReadDirectory: Warning, XXX.TIF: unknown field with tag 521
<0X209> encountered

I have found out that all this tags are belong to Old Jpeg format. So how
can I read the value from this tags?
Thanks in advanced.

Regards,
Steven