From BJSHEP@ausvm6.vnet.ibm.com Mon Dec 14 10:58:57 1992 Received: from vnet.ibm.com by dkuug.dk with SMTP id AA17102 (5.65c8/IDA-1.4.4j for ); Tue, 15 Dec 1992 01:48:51 +0100 Message-Id: <199212150048.AA17102@dkuug.dk> Received: from AUSVM6 by vnet.ibm.com (IBM VM SMTP V2R2) with BSMTP id 7178; Mon, 14 Dec 92 19:47:03 EST Date: Mon, 14 Dec 92 16:58:57 CST From: BJSHEP@ausvm6.vnet.ibm.com To: sc24@dkuug.dk X-Charset: ASCII X-Char-Esc: 29 HERE IS DRAFT CONTENT FOR MY PRESENTATION ON SC24 TO THE JTC1 MEETING. I WOULD LIKE TO GET COMMENTS BACK BY THE END OF THIS WEEK, IF POSSIBLE. I HOPE TO GET NICE (PRETTY) FOILS, BUT DO NOT KNOW WHAT PICTURES TO INCLUDE. ---------------------------------------------------------------- SC24: Computer Graphics and Image Processing Area of Work: Standardization of interfaces, in windowed and non-windowed environments, for: - computer graphics - image processing - interaction with and visual presentation of information Included are: ... presentation, and support for creation of, multimedia and hypermedia documents. Chairman: Dr Barry J Shepherd (USA) Secretariat: Fr W Wilke, DIN (resigning) ------------------------------------------------- Structure and Membership Meeting structure: Annual plenary meeting in June/July Working groups meet with SC24 plenary and additionally, as needed. 80 experts from 14 countries at 1992 mtg Currently have 20 P members, 16 O members Recently restructured into 4 WGs WG1 Architecture Peter Bono, USA WG4 Language Bindings Ingolf Grieger, Germany WG6 Multimedia Presentation Paul ten Hagen, Netherlands and interchange WG7 Image Processing and Detlef Kroemker, Germany Interchange ---------------------------------------------- WG1 Terms of Reference * Development and maintenance of the Computer Graphics Reference Model * Management of liaison with organizations outside SC24 on all topics of concern to SC24 * Solicitation of user requirements in the area of computer graphics and imaging. * Guidance of proposed new areas of work prior to NP acceptance by JTC1 * Specification techniques for computer graphics standards and imaging standards * Development of methods and procedures for testing and validation of implementations of computer graphics standards and imaging standards ----------------------------------------------- WG4 terms of reference * Develop programming language binding standards of SC24 semantic standards to existing programming language standards * Review language binding aspects of items proposed for registration * Review bindings to non-standard programming languages * Provide interpretations of existing bindings as required * Develop methods and procedures for the registration of graphical items * Review and resolve SC24 ballot comments on items proposed for registration ------------------------------------------------- WG6 terms of reference * Standardization of computer graphics functional specifications for application program interfaces * Standardization of techniques for presentation of multimedia informa- tion, including its creation, and support for user interaction * Standardization of interfaces for storage, retrieval and interchange of multimedia objects. * Standardization for graphical information exchange, including computer graphics metafiles and computer graphics device interfaces * Standardization of encodings for SC24 standards ----------------------------------------------------- WG7 terms of reference * Development of Imaging Architecture * (developing a standard for) Processing digital images * (developing a standard for) Interchange and storage of digital images * (specifying) Imaging techniques (components) in IT frameworks like multimedia, electronic mail, windowing, hypermedia and documents * Profiling of generic (image processing and interchange) specifications for use in specific application domains ------------------------------------------------ WG1 activities Special rapporteurs assigned to organize studies of: * Description Languages * Audio (eg, for the PROMO project) *Time (eg, for the PROMO project) * Windowing * Multimedia ------------------------------------------------- WG4 activities Language binding development for * GKS revision * APIs associated with the IPI standard * PREMO NP, which may be object oriented. * CGI to Ada Process registration proposals as required ----------------------------------------------- WG6 activities Processing the GKS-9X semantic specification for DIS ballot Extending the PREMO initial draft Progressing a CGM amendment to support "application structure" Maintaining the other "first generation" graphics standards (GKS, GKS-3D, PHIGS, CGI, and CGM-92) ----------------------------------------------- PREMO NP description PREMO is a second generation graphics standard It is an Application Programming Interface Goals include: * configurable; extensible by users * object oriented philosophy * include time as a basic component * incremental development in the committee (framework, components) * multiple types of objects, including: still graphics, animated graphics, synthetic images, audio, still images, moving images * compatible with distributed environments ------------------------------------------------ WG7 activities Preparing for handling comments on DIS circulation ------------------------------------------------- Problem: User relevance of standards Solution: Gather user requirements * surveys * open meetings at conferences Problem: Effective liaisons Solution: Active tracking of liaison statements, especially in period between SC24 plenary meetings. * log incoming liaison statements (see form) * follow up on non-response to our statements * encourage presence of liaison representatives at meetings ---------------------------------------------- Problem: Progress between meetings Solution: Maintain and manage a "to-do" list * to-do list created, with "due dates", during plenary * any incomplete items are reviewed during next plenary Problem: Limited resource for standards work Solution: Investigate type C liaison for specific groups/consortia Problem: Timely development of standards Solution: Develop anticipatory standards Validate via trial use. -------------------------------------------------- Future Directions for SC24 Extend multimedia work to cover virtual reality * stereo presentation * unusual input devices * toolkit standard to assist construction of virtual worlds Move into application oriented standards * domain tailoring via extensibility and profiles ------------------------------------------------- SUMMARY SC24 is active, and expert in APIs, language binding, and metafiles We are trying to bring effective management methods to our work Timeliness, user relevance, and quality are our goals We anticipate major growth in market areas addressed by our projects * image processing * multimedia presentation and authoring support * natural evolution to virtual reality