System and method for accurate rate control for video...

Details System and method for accurate rate control for video... System and method for accurate rate control for video...

2011-04-19

2011-04-19

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07929603

ABSTRACT:
A method and system for encoding a video frame. The method includes grouping macroblocks of a video frame into a plurality of groups and determining a first encoding rate for at least one of the plurality of groups based on at least one quantization parameter value associated with the group. The method further includes determining a distortion value associated with the first encoding rate and determining a distortion reduction density value based on the distortion value and the first encoding rate. The method further includes accessing a rate budget associated with the frame and adjusting simultaneously a plurality of quantization parameter values associated with one or more of the plurality of groups.

REFERENCES:
patent: 2004/0114817 (2004-06-01), Jayant et al.
patent: 2005/0286631 (2005-12-01), Wu et al.
Zhang et al. Research on the Computation Model of Macro Block Coding Based on the Rate-Distortion Optimization, IEEE, 2005, p. 1298-1302.

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