Scalable video encoder/decoder with drift control

Details Scalable video encoder/decoder with drift control Scalable video encoder/decoder with drift control

2005-11-01

2005-11-01

Le, Vu (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240020, C375S240260

Reexamination Certificate

active

06961383

ABSTRACT:
Scalable video coders have traditionally avoided using enhancement layer information to predict the base layer, so as to avoid so-called “drift”. As a result, they are less efficient than a one-layer coder. The present invention is directed to a scalable video coder that allows drift, by predicting the base layer from the enhancement layer information. Through careful management of the amount of drift introduced, the overall compression efficiency can be improved while only slighly degrading resilience for lower bit-rates.

REFERENCES:
patent: 6408096 (2002-06-01), Tan
patent: 6539058 (2003-03-01), Pearlstein et al.
patent: 6631163 (2003-10-01), Peng
Arnold et al, “Efficient drift-free signal-to-noise ratio scalability”, IEEE Transactions on Circuits and Systems for Video Technology, vol. 10, iss. 1, pp. 70-82, Feb. 2000.
Iwahashi et al, “Design of motion compensation filters of frequency scalable coding-drift reduction”, IEEE International Symposium on Circuits and Systems, vol. 3, pp. 277-280, Jun. 1994.

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