Presentation Topics

CS 4763 Multimedia Systems

Multimedia

• When different people mention the term multimedia, they often have quite different, or even opposing, viewpoints– A PC vendor– A consumer entertainment vendor– A CS Student

• Multimedia and Computer Science

Components of Multimedia

• Multimedia involves multiple modalities of text, audio, images, drawings, animation, and video. Examples of how these modalities are put to use:– Video teleconferencing– Distributed lectures for higher education– Tele-medicine– Co-operative work environment– Searching in (very) large video and image databases

for target visual objects– “Augmented” reality: placing real-appearing computer

graphics and video objects into scenes

Components of Multimedia (continued…)

• Including audio cues for where video-conference participants are located

• Building searchable features into new video, and enabling very high- to very low-bit-rate use of new, scalable multimedia products

• Making multimedia component editable• Building “inverse-Hollywood” applications that can

recreate the process by which a video was made• Using voice-recognition to build an interactive

environment, say a kitchen-wall web browser

Multimedia

• History of Multimedia

1.Newspapers: perhaps the first mass communication medium

2.Motion Pictures (1830’s)

3.Wireless radio transmission (1895)

4.Television (20th century)

History of Multimedia5. The connection between computers and ideas about multimedia covers what is

actually only a short period.

• 1945 – A landmark article• 1960 – hypertext• 1967 – Architecture Machine Group was formed in MIT• 1968 – On-line System (NLS), another very early version of hypertext program• 1969 – FRESS: a hypertext editor• 1976 – Multiple Media• 1985 – MIT Media Lab• 1989 – World Wide Web first proposed• 1990 – Apple Multimedia Lab• 1991 – MPEG-1 was approved as an international standard for digital video – led to the newer standards• 1991 – PDA• 1992 – JPEG was accepted as the international standard for digital image compression• 1992 – MBone first audio multicast on the Net was made• 1993 – NCSA Mosaic – the first full-fledged browser• 1994 – Netscape • 1995 – JAVA language was created for platform-independent application development• 1996 – DVD video• 1998 – XML 1.0 • 1998 – Hand-held MP3 devices• 2008 – WWW size estimated over 10-15 billions pages

Current Research

• Many exciting research projects are currently underway. Here are a few of them:– Camera-based object tracking technology– 3D motion capture– Multiple views– 3D Capture technology– Specific multimedia applications– Digital fashion– Electronic Housecall systems– Augmented Interaction applications

Selected Topics

• Google Earth• Mobile Search• MPEG• Video Production• Video Game• Digital Right Management• New User Interface : Vista vs. Beryl• Adobe Flash• HDTV• Interactive Television• …