ADAPTIVE SUBBAND VQ FOR VERY LOW BIT RATE VIDEO CODING
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by Stathis P. Voukelatos, John J. Soraghan
http://www.spd.eee.strath.ac.uk/~stathis/demo/papers-ps/eusipco96.ps.gz
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Abstract:
A novel adaptive VQ based subband coding scheme for very low bit rate coding of video sequences is presented. Overlapped block motion estimation/compensation is employed to exploit interframe redundancy. A 2D wavelet transform (WT) is applied to the resulting displaced frame difference (DFD) signal. The WT coefficients are encoded using an adaptive vector quantization scheme in combination with a dynamic bit allocation strategy based on marginal analysis. Simulation results on videophone-type test sequences are given to evaluate the performance of the codec at very low bit rates. A comparative performance with the H.261 and H.263 video coding standards is also shown.
Citations
| 14 | Multiscale Video Representation Using Multiresolution Motion Compensation and Wavelet Decomposition – Zafar, Zhang, et al. - 1993 |
| 10 | Modestino, "Adaptive entropy coded subband coding of images – Kim, W - 1992 |
| 10 | A wavelet codec with overlapped motion compensation for very low bit-rate environment – Katto, Ohki, et al. - 1994 |
| 9 | Very low bit rate video coding using 3D subband approach – Ngan, Chooi - 1994 |
| 7 | Recommendation H.263, "Video coding for low bit-rate communication (TMN5 – Draft - 1995 |
| 2 | Low Bit-Rate Video Coding Using Wavelet Vector Quantization – Sampson, Silva, et al. - 1995 |
| 1 | Very Low Bit-Rate Colour Video Coding Scheme Using Subband Motion Estimation/Compensation – Goh, Soraghan, et al. - 1994 |
| 1 | Very Low Bit Rate Color Video Coding Using Adaptive Subband Vector Quantization with Dynamic Bit Allocation – Voukelatos, Soraghan |
