LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
February 2009
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2009.02.12 22:53 "Re: warning and errors", by Frank Warmerdam
Philip Watkinson wrote: > Hello, > > I'm using Libtiff and getting the warning "unknown field with tag 34665 > (0x8769) encountered". Joris stated the following about the tag in some > correspondence: > > The warning doesn't really matter, unless you're specifically interested > in the EXIF information of course. Image decoding using LibTiff should > still work fine, the warning can be safely ignored. > > Can I assume that all warning still produce a good image? Philip, No, this is not a safe assumption, but it is true that the "unknown field" warning is harmless. It normally just indicates the presents of a (possibly private) tag not in the core standard. There are some warnings that may indicate the image is likely to be wrong. But generally speaking the library will attempt to continue processing and you are *likely* to get something useful when you see warnings. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent