Message-ID: 882568B1.0064AAB0.00@ymln11.ymp.gov
To: wongkw@ieee.org
Subject: Re: Duplicating tiff file
From: Rex_Jolliff@notes.ymp.gov
Date: Wed, 29 Mar 2000 10:18:51 -0800
Cc: tiff@olympiakos.com
Sender: owner-tiff@olympiakos.com









Kin Wong <kinwong@ei.dupont.com> on 03/29/2000 09:57:57 AM

Please respond to wongkw@ieee.org

To:   tiff@olympiakos.com
cc:    (bcc: Rex Jolliff/YM/RWDOE)

Subject:  Re: Duplicating tiff file




Hi,

>Yes, I can recreate the header.  I guess my concern is in line with Tom and
Klaus's
>warning regarding unknown tiff tags, but in a different direction.  I want the
new
>file to be identical to the original tiff file with the exception that the
pixel
>data has been filtered by my code.  This way, I am not losing any information
that
>may be encoded by the original application that created the file that I am
>processing.  This way, I am preserving the originating application's tiff file
>format.

If you change the image data in any way, the likely case is that the resulting
encoded data will not be exactly the same size as the original, so the tiff
header
will have to change.  The best approach is to use the code in tiffcp to do the
work.

Rex.






