Xref: utzoo alt.fax:519 comp.sys.ibm.pc:43600 comp.graphics:9757
Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!asuvax!mcdphx!mcdchg!att!cbnewsc!vgopal
From: vgopal@cbnewsc.ATT.COM (venu.p.gopal)
Newsgroups: alt.fax,comp.sys.ibm.pc,comp.graphics
Subject: Re:CCITT Modified Huffman Encoding (Compression)
Summary: SCANWARE/VUIMAGE+ handles it
Keywords: TIFF, CCITT Modified Huffman
Message-ID: <13298@cbnewsc.ATT.COM>
Date: 4 Feb 90 22:01:50 GMT
References: <1990Jan26.201352.4264@ctr.columbia.edu>
Reply-To: vgopal@cbnewsc.ATT.COM
Organization: AT&T
Lines: 16

In article <1990Jan26.201352.4264@ctr.columbia.edu> seth@sirius.ctr.columbia.edu (Seth Robertson) writes:

!I was wondering if anyone knew anything about the CCITT Modified
!Huffman Encoding.  It is a compression technique used in, at least,
!the Tiff format.  (I have a program that produces it, but with no
!instructions on how one might go about decoding it.  I have had no
!luck, as yet, in trying to find a package that understands it.

There are, as far as I know, two packages that understand it - one is
SCANWARE, the software that comes with the HP Scanjet Scanner, and
VUIMAGE PLUS, the GIF/TIFF display software.

Details of the encoding/decoding are listed in the TIFF format
specifications.

Venu P. Gopal   UUCP: ..!att!ihuxy!vgopal   Internet: vgopal@ihuxy.att.com