Dynamic rate optimization for an ensemble of video encoders

Details Dynamic rate optimization for an ensemble of video encoders Dynamic rate optimization for an ensemble of video encoders

1997-11-10

1999-01-19

Kostak, Victor R.

Television

Bandwidth reduction system

Plural video programs in single channel

348387, H04N 726

Patent

active

058619194

ABSTRACT:
The present invention relates to a method for dynamically allocating bandwidth to each encoder in an ensemble of video encoders whose output bit streams share a single communications channel. In accordance with the present invention, the channel bandwidth is allocated to the individual encoders in the ensemble in such a way that differences in a quality measure among the decoders are reduced. The quality measure includes a term that behaves like a peak-signal-to-noise ratio (PSNR) and a term that measures the "masking effect" in a video signal. The "masking effect" results because an encoded frame with a high visual complexity masks coding artifacts from the viewer when it is decoded and displayed.

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patent: 5550590 (1996-08-01), Sakazawa et al.
patent: 5606369 (1997-02-01), Keesman et al.
patent: 5629736 (1997-05-01), Haskell et al.

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