From carson@siggraph.org Fri Feb 27 16:40:13 1998 Received: from mail.htg.net (mail.htg.net [209.136.26.18]) by dkuug.dk (8.6.12/8.6.12) with ESMTP id QAA06371 for ; Fri, 27 Feb 1998 16:40:09 +0100 Received: from study.huntleigh.net (pm3-1-189.htg.net [209.136.26.189] (may be forged)) by mail.htg.net (8.8.8/8.8.8) with SMTP id IAA25770; Fri, 27 Feb 1998 08:43:11 -0700 (MST) Message-Id: <3.0.32.19980227084833.00a42c20@siggraph.org> X-Sender: carson@siggraph.org X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Fri, 27 Feb 1998 08:49:03 -0700 To: SC24@dkuug.dk From: Steve Carson Subject: Request for assistance from SC 29 Cc: K.E.Barron@research.kpn.com, hirose@itscj.ipsj.or.jp, mc@fivebats.com, graham.thomas@rd.bbc.co.uk Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" I have a request for assistance from Kevin Barron (K.E.Barron@research.kpn.com) who co-chairs the SC 29/ WG 11 (i.e. MPEG-4) ad hoc group on the topic of normative composition along with Mike Coleman (mc@fivebats.com) and Graham Thomas (graham.thomas@rd.bbc.co.uk). The charter of this group is: 1. To identify most relevant applications 2. To identify requirements for normative composition from application point of view 3. To identify potential conformance points 4. To identify possible approaches 5. To see how VRML and other groups approach the problem As Kevin has explained the problem to me it includes the need to standardise a "display buffer", that is a specific pixel representation that would be normative based on an input MPEG-4 stream. One motivation is to give the content author guarantees about what the output (within reasonable bounds) will look and sound like. Since SC 24 has long experience in dealing with similar issues in both the conformance statements within our standards and in the strategies we have developed for conformance testing it is very appropriate that we advise and assist SC 29 in this endeavor. This is the procedure for anyone wanting to join the ad-hoc group reflector: Send a message to: mailserv@research.kpn.com with this in the body: subscribe mpeg4norm_com "your_email_address" Steve Carson Chair, ISO/IEC JTC 1/SC 24 Computer Graphics and Image Processing --------------------------------------------------------- Steve Carson phone: +1-505-521-7399 GSC Associates Inc. fax: +1-505-521-9321 5272 Redman Road e-mail: carson@siggraph.org Las Cruces, NM 88011 USA ---------------------------------------------------------