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 language | English |
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Pages | 598-601 |
Number of pages | 4 |
State | Published - 1996 |
Event | Proceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3) - Washington, DC, USA Duration: 23 Oct 1995 → 26 Oct 1995 |
Conference
Conference | Proceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3) |
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City | Washington, DC, USA |
Period | 23/10/95 → 26/10/95 |