AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2004.02.02 23:28 "[Tiff] unknown tags, tiffcp makes invalid copies", by Mark McConnell
2004.02.03 07:46 "Re: [Tiff] unknown tags, tiffcp makes invalid copies", by Andrey Kiselev
2004.02.06 13:37 "RE: [Tiff] Problem with tiffcp (tiffsplit?) and multipage tiffs on Windows.", by Valkanas Nikolaos
2004.02.05 17:21 "[Tiff] Problem with tiffcp (tiffsplit?) and multipage tiffs on Windows.", by Valkanas Nikolaos
2004.02.06 21:48 "Re: [Tiff] Problem with tiffcp (tiffsplit?) and multipage tiffs on Windows.", by Andrey Kiselev
[...]

2004.02.06 13:37 "RE: [Tiff] Problem with tiffcp (tiffsplit?) and multipage tiffs on Windows.", by Valkanas Nikolaos

Dear Andrey,

Thanks for the fast response. I was using libtiff 3.5.7 on Solaris 8. I upgraded to libtiff 3.6.1. Same result.

However taking cue from your response that hinted of no similar problems that have been encountered in libtiff, I did some more checking. It turns out that netpbm's pnmdepth is the trouble maker. I used it as an intermediate step to achieve tiff color reduction to 4 colors. tiffsplit -> tifftopnm -> pnmdepth -> pnmtotiff -> tiffcp

Somehow it produces weird code (double error) that is viewable on multipaged tiffs (only the first page) but it is not viewable with single page tifs. I apologize for the noise I created. BTW do you know of any good opensource unix color reduction utility for tiffs (command line preferably)?

Thanks,

Nikos Balkanas
System Architect,
Tellas S.A.,
1A Neapoleos Street Maroussi, Greece.

Direct Phone: +(30) 210 8113 598
Fax: +(30) 210 8113 458
e-mail: nikolaos.valkanas@mail.tellas.gr

-----Original Message-----

Subject: Re: [Tiff] Problem with tiffcp (tiffsplit?) and multipage tiffs on Windows.

On Thu, Feb 05, 2004 at 07:21:37PM +0200, Valkanas Nikolaos wrote: > My problem is that when I compose a multipaged tiff using tiffcp and I

> try to view it through the standard Windows Picture and fax viewer, as

> well as most other Windows freeware (IrfanView etc.) they will report > that the image is corrupt. Only the Office XP Document viewer will

> display it correctly. Unfortunately we cannot use the Document Viewer.

The question is: what libtiff version do you using? did you tried the latest 3.6.1 one?

> Meanwhile when I try tiffsplit from the windows original tiffs I get:

> Warning, incorrect count for field "PageNumber" (1, expecting 2); tag > ignored.

PageNumber tag holds array of size 2, where the first element contains a page number and the second one contains total number of pages in the document. It seems that you have badly written files on input.