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Proceedings Paper

Stochastic optimal control of variable bit-rate video coders
Author(s): Jose Ignacio Ronda; Fernando Jaureguizar; Narciso N. Garcia
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Paper Abstract

Transmission of variable bit-rate encoded video over either constant or variable bit-rate communication channels imposes restrictions on the shape of the bit generation process in the encoder. In order that these restrictions can be met, a coder-network interface system has be to included consisting of a buffer and a coder controller device. In this paper we show how the availability of appropriate statistical models of the behavior of the source-coder system allows the formalization of the problem of the controller design as a stochastic optimal control problem, which can be solved by direct application of dynamic programming algorithms. Focusing the problem in the adaptation of a hybrid DCT coder to a fixed bit-rate channel, examples of the three stages of the process (source-coder modelization, problem definition, and optimal policy computation) are provided.

Paper Details

Date Published: 22 October 1993
PDF: 11 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157905
Show Author Affiliations
Jose Ignacio Ronda, Univ. Politecnica de Madrid (Spain)
Fernando Jaureguizar, Univ. Politecnica de Madrid (Spain)
Narciso N. Garcia, Univ. Politecnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

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