LibTiff Mailing List

TIFF and LibTiff Mailing List Archive
December 1994

Previous Thread
Next Thread

Previous by Thread
Next by Thread

Previous by Date
Next by Date

The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems

1994.12.16 17:39 "Re: TIFF File Naming... Multiple images/file", by Jeremy Shaw

Date: Fri, 16 Dec 94 08:41:59 +0100
From: "Karsten Spang" <krs@kampsax.dk>:
> 
> In message <199412151424.JAA24464@dw3f.ess.harris.com>,
> "Bill Davis" <wdavis@dw3f.ess.harris.com>  writes:
: 
> >When there are multiple images in a single file, the standard
> >is clear that they are variations of a single image.  Only
> >the first one must be read by a compliant TIFF reader.
Actually a BASELINE compliant reader.  There are a number of applications
out there which are able to read multiple images in a single file (e.g.
TMS ViewDirector-based, Watermark, etc.)  So for super-baseline applications,
Karstens second point is interesting...

> It is quite another topic how you update a single page of such a document...
> 

Any comments?  My take is that it ought to be possible to update part of
the file, shuffling data and modifying directory entries as necessary.
Has anyone implemented this?  Does tifflib support it (I think not...)

jeremy.