Digital Signal Processing Reference
In-Depth Information
Video Compression
Yu-Han Chen and Liang-Gee Chen
Abstract
In this chapter, we show the demands of video compression and introduce
video coding systems with state-of-the-art signal processing techniques. In the first
section, we show the evolution of video coding standards. The coding standards
are developed to overcome the problems of limited storage capacity and limited
communication bandwidth for video applications. In the second section, the basic
components of a video coding system are introduced. The redundant information
in a video sequence is explored and removed to achieve data compression. In the
third section, we will introduce several emergent video applications (including High
Definition TeleVision (HDTV), streaming, surveillance, and multiview videos) and
the corresponding video coding systems. People will not stop pursuing move vivid
video services. Video coding systems with better coding performance and visual
quality will be continuously developed in the future.
1
Evolution of Video Coding Standards
Digital video compression techniques play an important role to enable video appli-
One demand of video compression is storage. Without compression, a raw video in
288) spatial resolution, and 30 Frame
Per Second (FPS) temporal resolution generates about 36.5 Mbps of data rate. For
a 700 MB CD-ROM, only 153 seconds of the CIF video can be stored. In order to
store 1 h video in a CD-ROM, 25 times of compression ratio is required to achieve
1.5 Mbps of data rate. In the early 1990s, Motion Picture Experts Group (MPEG)
of International Standard Organization/International Electrotechnical Commission
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Y.-H. Chen L.-G. Chen (
)
Graduate Institute of Electronics Engineering and Department of Electrical Engineering,
National Taiwan University, Taipei, Taiwan, R.O.C
