Television – Bandwidth reduction system – Data rate reduction
Patent
1997-03-19
2000-02-29
Lee, Richard
Television
Bandwidth reduction system
Data rate reduction
348409, H04N 732
Patent
active
06031575&
ABSTRACT:
An image signal encoding method and apparatus of encoding first and second image signals in decomposed forms and a key signal used to combine the first and second image signals. First and second scalable encoding processes are performed on the first and second image signals, respectively. A scalable encoding process is performed on the key signal which is similar to that employed for the second image signal. In a typical application, the first image signal is a background image signal and the second image signal is a foreground image signal. The method and apparatus enables highly efficient encoding and decoding of a moving image.
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Suzuki Teruhiko
Yagasaki Yoichi
Frommer William S.
Lee Richard
Sony Corporation
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