LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
July 2004
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
2004.07.02 18:10 "Re: StripOffsets to find the image data", by Jim Schueckler
Penn, A TIFF image can be written in one great big strip or lots of smaller strips. The last 4 bytes of a tiff tag may contain either the data or an offset to the data. If the data fits into 4 bytes, then the data must be in the tag. If the data is more than 4 bytes, then that 4 byte value is a long that is the offset to the data someplace else in the file. If that file had only one strip, the image data would start at the offset defined in the tag, as you tried to do. But that tag indicates there are 0xBC ( dec 188 ) strips, so the ARRAY of 188 LONG offsets starts at offset 182. best wishes, Jim Jim Schueckler (585)726-6369 Professional Digital Cameras 1/205/KP kmx-236-6369 fax(585)726-6669 Eastman Kodak Company MS 03010 mailto:James.Schueckler@kodak.com 2400 Mt Read Boulevard http://www.kodak.com/go/kpdp Rochester NY 14650-3010 "Oh! I have slipped the surly bonds of earth..." J.G. McGee