Bill:

Yes, but JPEG 2000 and DjVu are also lossy.  Both separate the image into
different information layers, where the picture layer uses a lossy
compression scheme.  MrSID from Lizardtech might be appropriate, but it
generates huge files.  What is the requirement, Dan?

Bernard Chester, CDIA+, ICP, AIIM MIT
Principal
IMERGE Consulting, Pacific Northwest Office
7683 SE 27 Street, #316
Mercer Island, WA   98040
(office) 206-230-9253
(cell) 206-979-7389
mailto:[log in to unmask]


-----Original Message-----
From: Records Management Program [mailto:[log in to unmask]] On Behalf
Of Roach, Bill J.
Sent: Wednesday, May 04, 2005 2:43 PM
To: [log in to unmask]
Subject: Re: Color Preservation Standards

>>I am specifically interested in JPEG vs. color TIFF for comparison
purposes.<<

It depends on your requirements.  JPEG is a lossy format that compresses
files by losing pixels.  TIFF is lossless but makes for very large files, we
have some that are several GB in size.

As an alternative, new compression routines are available.  JPEG 2000 and
DjVu are two that you might want to consider.

Bill R

List archives at http://lists.ufl.edu/archives/recmgmt-l.html
Contact [log in to unmask] for assistance

List archives at http://lists.ufl.edu/archives/recmgmt-l.html
Contact [log in to unmask] for assistance