nebulus@well.sf.ca.us (Bruce McDiffett - no good deed goes unpunished) (04/18/91)
The Bay Area chapter of ACM/Siggraph - the Special Interest Group on Computer Graphics and Interactive Techniques - announces its April meeting: IMAGE COMPRESSION: JPEG, MPEG, AND THE FUTURE Richard Webb Software Engineer C-Cube Microsystems 8:00 pm Tuesday, Apr. 23 Exploratorium, McBean Theater San Francisco, CA This month's meeting will take a detailed look at two significant standards for image compression - the JPEG (Joint Photographic Experts Group) standard for still images, and the MPEG (Motion Picture Experts Group) standard for sequences of images. Richard will discuss the mathematical basis for these compression algorithms, the strengths and weaknesses of the two algorithms, and the details of the algorithms as specified in the standards documents. He will demonstrate both hardware and software implementations of JPEG. He will also comment on some of the experiences C-Cube has had in implementing the JPEG algorithm in silicon. This meeting should appeal to potential implementors interested in the bit-level details of JPEG and MPEG, and is intended to answer the questions that arise when trying to write JPEG software. It should also interest systems architects who want to know the tradeoffs between software, board-level, and chip based implementations of image compression. It will also be of general interest to anyone who wants to see if they can tell the difference between an original image and an image that's been through JPEG compression. There will be working JPEG hardware at the meeting, running on a Macintosh IIci. There may also be some prototype MPEG hardware as well, but that's not yet confirmed. Richard Webb is a software engineer at C-Cube Microsystems, developers of JPEG and MPEG compression chips. He is responsible for systems architecture in the research division at C-Cube. Bay Area Siggraph meetings are always free and open to anyone. This meeting will probably be pretty crowded, so come early for a good seat. Directions to The Exploratorium The Exploratorium is located between Lombard and Marina in north San Francisco, near the Golden Gate Bridge and Crissy Field. The McBean Theater entrance is at the northwest end of the building. For detailed directions from where you live, call the Exploratorium at (415) 563-7337. -------------------------------------------------------------------------- Bay Area ACM/Siggraph Bruce McDiffett, President P.O. Box 3553 nebulus@well.sf.ca.us Santa Clara, CA 95055 For up to date information about this and other Siggraph activities, call the Bay Area Siggraph GraphicsLine at (415) 599-2054, 24 hours a day. --------------------------------------------------------------------------