AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2006.05.25 17:24 "[Tiff] libtiff writes zero valued tile offsets and byte counts", by Thomas Sharpless
2006.05.30 08:42 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Gerben Vos
2006.05.30 18:04 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Chris Cox
2006.06.01 03:42 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Joris Van Damme
2006.06.01 04:09 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Chris Cox
2006.06.08 22:27 "RE: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Mark R. Olin
2006.06.08 18:44 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Frank Warmerdam
2006.06.08 23:22 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Joris Van Damme

2006.05.30 18:04 "Re: [Tiff] libtiff writes zero valued tile offsets and byte counts", by Chris Cox

On 5/30/06 1:42 AM, "Gerben Vos" <Gerben@zylab.com> wrote:

My scanning camera app writes tiled tiff images using libtiff under Win32. The images

are readable by PhotoShop (6.01) but not by PaintShop Pro 7 or libtiff itself. The problem

seems to be that all the tile offsets and bytecounts in the file are zero (their number is

correct). Can anyone tell me why?

It's hard to image that such a file would be readable by Photoshop (unless it applies some heuristics when it encounters a nonconforming TIFF file).

Yes, Photoshop does try to read a lot of non-conforming TIFF images.

For the case given, it should only work if compression == none (so we can compute the tile size).

Chris