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?
> -----Original Message-----
> From: email@example.com
> [mailto:firstname.lastname@example.org]On Behalf Of xevit
> Sent: Tuesday, March 02, 2004 5:14 PM
> To: Chris Cox; email@example.com
> 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 ;-)