AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2004.03.01 20:10 "[Tiff] Hello world", by xevit
2004.03.01 22:10 "Re: [Tiff] Hello world", by Chris Cox
2004.03.02 23:14 "Re: [Tiff] Hello world", by xevit
2004.03.02 23:16 "RE: [Tiff] Hello world", by Pushkar Pradhan
2004.03.03 11:16 "Re: [Tiff] Hello world", by Gerben Vos
2004.03.03 12:02 "Re: [Tiff] Hello world", by Rob van den Tillaart
2004.03.02 23:13 "[Tiff] Splines To Tiles", by xevit
2004.03.03 12:37 "Re: [Tiff] Splines To Tiles", by Gerben Vos
2004.03.03 13:03 "Re: [Tiff] Splines To Tiles", by Frederic Delhoume
2004.03.03 14:18 "Re: [Tiff] Hello world", by Frank Warmerdam
2004.03.13 17:11 "[Tiff] Error handling in LibTiff", by xevit

2004.03.02 23:16 "RE: [Tiff] Hello world", by Pushkar Pradhan

I remember reading the TIFF manual that you can't read and write to the same file simultaneously.

Can that be your problem?

Pushkar

> -----Original Message-----
> From: tiff-admin@remotesensing.org
> [mailto:tiff-admin@remotesensing.org]On Behalf Of xevit
> Sent: Tuesday, March 02, 2004 5:14 PM
> To: Chris Cox; tiff@remotesensing.org
> Subject: Re: [Tiff] Hello world

TIFF cannot support any file over 4 Gig.

Yes I know this ( I've read Tiff spec from adobe PDF ). I want to implement a format using XML and some Tiff files to reach 4Gb. But this is not my main problem.

My problem is that when I'm working on a big TIFF file ( tile based ) I want to read and write simultaneous to the same file, to change small portions of my bigImage.

For example, if I've a big image ( 1'5 GB ) and I want to modify a a single tile, I can't do that without rewriting all image.

Can you or anybody tell me a way to avoid the rewriting of the entire file? Thanks Chris.

>.

That is a limitation inherent in the TIFF spec. and no changes to libTIFF can change that.

You need a different file format - but at this time, very few image formats go over 4 Gig.

(and very few implementations go over 2 Gig correctly ;-)