AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2012.06.06 05:05 "[Tiff] Custom and EXIF directory read/write", by Frank Warmerdam
2012.06.06 13:42 "Re: [Tiff] Custom and EXIF directory read/write", by Bob Friesenhahn
2012.06.06 17:17 "Re: [Tiff] Custom and EXIF directory read/write", by Frank Warmerdam
2012.06.24 18:59 "[Tiff] Update of tiffgt.c", by Christophe Deroulers
2012.07.06 13:15 "Re: [Tiff] Update of tiffgt.c", by Robert Wilson

2012.06.06 13:42 "Re: [Tiff] Custom and EXIF directory read/write", by Bob Friesenhahn

A common expectation/requirement is to be able to take an EXIF chunk from JPEG and put it in TIFF, or vice-versa. The method you describe seems to require that the application/user add tags one by one so it is necessary to parse the EXIF blob fully in order to transfer it into TIFF. Is there a possibility of extracting an EXIF "blob" from TIFF or inserting an EXIF "blob" into TIFF? This would require fixup of the IFD offsets since the offsets are treated differently in JPEG and TIFF.

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/