PowerPoint 97

Multimedia Systems LFSTP 1998/99 IS 10.3 Major Greg Phillips Royal Military College of Canada Electrical and Computer Engineering [email_address] +01-613-541-6000 ext. 6190

What is multimedia? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Graphics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.w3c.org

Compression Technologies ,[object Object],[object Object],[object Object],[object Object]

24 bits per pixel uncompressed: 473 kB 8 bits per pixel uncompressed: 159 kB GIF: 73 kB, PNG: 68 kB

Lossy Compression ,[object Object],[object Object],[object Object],[object Object],[object Object]

24 bits per pixel uncompressed: 473 kB 24 bits per pixel JPEG (q2): 89 kB

24 bits per pixel JPEG (q50): 14 kB 24 bits per pixel JPEG (q255): 7 kB

Vector Graphics ,[object Object],[object Object],[object Object],[object Object]

Audio Storage Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Audio Encoding Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object]

Audio Compression ,[object Object],[object Object],[object Object],http://www.bok.net/~tristan/MPEG/MPEG-content.html http://www.connact.com/~eaw/minidisc/index.html

Video Storage Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Actually, I’m lying: video isn’t stored in bits/pixel. It’s much more complicated than that.

MPEG Video Compression ,[object Object],[object Object],[object Object],[object Object],[object Object],http://www.bok.net/~tristan/MPEG/MPEG-content.html

MPEG motion prediction Current frame Previous frame + motion Current - previous Compensated difference

Video Conferencing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Synchronization ,[object Object],[object Object],[object Object]

Communications Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

From the Iris Perspective ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Design question: how do we integrate these requirements in a simple, low cost network based in Internet technology.

PowerPoint 97

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