子带视频编码与时间自适应运动插值

Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing Pub Date : 1994-04-19 DOI:10.1109/ICASSP.1994.389462

Jungwoo Lee, B. Dickinson

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引用次数: 1

摘要

提出了一种新的时间自适应运动插值子带视频编码算法。在该方法中，利用最低空间子带的时间分割自适应地选择运动估计的参考帧。对一组图片中的每种图片类型进行可变目标位分配，在输出比特率不变的约束下，允许参考帧的数量可变。采用分块DPCM、PCM和行距编码结合截断霍夫曼编码对子带中的量化数据进行编码。仿真结果表明，自适应方案与非自适应方案具有较好的一致性。

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Subband video coding with temporally adaptive motion interpolation

We present a new subband video coding algorithm with temporally adaptive motion interpolation. In the approach proposed, the reference frames for motion estimation are adaptively selected using temporal segmentation in the lowest spatial subband. Variable target bit allocation for each picture type in a group of pictures is used to allow variable number of reference frames with the constraint of constant output bit rate. Block-wise DPCM, PCM, and run-length coding combined with truncated Huffman coding are used to encode the quantized data in the subbands. Simulation results of the adaptive scheme compare favorably with those of a non-adaptive scheme.<>

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Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing

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