Wavelet video coder using entropy-constrained trellis coded quantization

Hiroshi Ito, Nariman Farvardin

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

A new wavelet video coder is proposed which uses entropy-constrained trellis-coded quantization to quantize the inter-frame prediction errors of the decomposed subband data. The video sequence is first spatially decomposed into several subbands and motion compensated in the frequency domain. A simple switching mechanism is used to decide between inter-frame and intra-frame coding on a macro-block basis. Symmetric codebooks have been designed for the quantizers assuming that the subband signals are approximated by a generalized Gaussian source. The output rate is controlled by a feedback quantization control mechanism, leading to a fixed-rate system. Simulation results reported for the 'Miss America' sequence, indicate that the proposed codec has a very good rate-distortion performance.

Original languageEnglish
Pages598-601
Number of pages4
StatePublished - 1996
EventProceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3) - Washington, DC, USA
Duration: 23 Oct 199526 Oct 1995

Conference

ConferenceProceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3)
CityWashington, DC, USA
Period23/10/9526/10/95

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