Buffer control technique for video coding

Giancarlo Calvagno; C. Ghirardi; Gian Antonio Mian; R. Rinaldo

doi:10.1117/12.201207

17 February 1995 Buffer control technique for video coding

Giancarlo Calvagno, C. Ghirardi, Gian Antonio Mian, R. Rinaldo

Proceedings Volume 2451, Advanced Image and Video Communications and Storage Technologies; (1995) https://doi.org/10.1117/12.201207
Event: Advanced Networks and Services, 1995, Amsterdam, Netherlands

Abstract

In this work we develop an adaptive scheme for quantization of subband or transform coded frames in a typical video sequence coder. Using a simple statistical model for the subband or transform coefficients, we present a procedure to determine the optimum dead-zone quantizer for a given entropy of the quantizer output symbols. We find that, at low bit rates, the dead- zone quantizer offers better performance than the uniform quantizer. The model is used to develop an adaptive procedure to update the quantizer parameters on the basis of the state of a channel buffer with constant output rate and variable input rate. Experimental results show that the model can be effectively used in a practical scheme for buffer control.

Citation Download Citation

Giancarlo Calvagno, C. Ghirardi, Gian Antonio Mian, and R. Rinaldo "Buffer control technique for video coding", Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995); https://doi.org/10.1117/12.201207

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