Multimedia Communications: Video Compression

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Multimedia CommunicationsVideo Compression

• mmc6.01

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Video Formats and Bit Rates
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Temporal Activity in Head-and-Shoulders Video
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Model for Block-Based Motion Compensation
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Error Signals in Temporal Prediction and Motion
Compensation
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Matching Algorithm for Motion Estimation
mmc6.06
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Video Coder based on MC-DCT
mmc6.07
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Videoconferencing Standards in ITU
mmc6.08
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Group of Pictures in MPEG
mmc6.09
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Object-based Video Coding
mmc6.10
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Face Synthesis Using a Wire-Mesh Model
Two methods of Face Synthesis - Visual (Driven
by natural face video) - Text-Based (Modulation
of wire-mesh face model)
mmc6.11
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Goals of MPEG4

• Reusable Reconfigurable Content
• Synthetic-Natural Hybrid Coding
• Content-Based QoS
• High Level of User Interaction
• Networking Tools, IP-Protocols

mmc6.12
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HDTV Compression
1 million pixels per frame 60 frames per
second 60 MHz sampling rate 60 Mbps at 1 bit per
pixel 25 Mbps at 0.25 bit per pixel 17 Mbps
Source Coding 8 Mbps Channel Coding
mmc6.13
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Aspect Ratio in HDTV
mmc6.14
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Audiovisual Experience in HDTV
mmc6.15
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Frequency-Sensitivity of the Human Eye
mmc6.16
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Advanced Television Research

• De-Interlacing
• More efficient compression
  Techniques
  from H.263, MPEG4, .
• Compressed Domain Processing for
  Multiplexing Editing Ad-Insertion
  
• Efficient Processing of Graphics
  mmc6.17

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Video Coding Demo
mmc6.18