Stochastic optimal control of variable bit-rate video coders

Jose Ignacio Ronda; Fernando Jaureguizar; Narciso N. Garcia

doi:10.1117/12.157905

22 October 1993 Stochastic optimal control of variable bit-rate video coders

Jose Ignacio Ronda; Fernando Jaureguizar; Narciso N. Garcia

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Proceedings Volume 2094, Visual Communications and Image Processing '93; (1993) https://doi.org/10.1117/12.157905
Event: Visual Communications and Image Processing '93, 1993, Cambridge, MA, United States

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.

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Jose Ignacio Ronda, Jose Ignacio Ronda, Fernando Jaureguizar, Fernando Jaureguizar, Narciso N. Garcia, Narciso N. Garcia, } "Stochastic optimal control of variable bit-rate video coders", Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157905; https://doi.org/10.1117/12.157905

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