A Flexible R-D-Based Multiple Description Scheme for JPEG 2000
A Flexible R-D-Based Multiple Description Scheme for JPEG 2000
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DOI：
10.1109/lsp.2006.883986
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发表时间：
2007-02
影响因子：
3.9
通讯作者：
E. Baccaglini;T. Tillo;G. Olmo
中科院分区：
文献类型：
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作者：
E. Baccaglini;T. Tillo;G. Olmo
多描述编码(MDC)是在容易出错的网络中防止分组丢失的一种很好的方法。然而，冗余度调整通常是困难的，这使得生成具有良好冗余率失真性能的描述成为一项困难的工作。此外，生成两个以上描述的复杂性对MDC来说是一个很大的限制。在这封信中，我们提出了一种利用数据率失真特性来生成冗余级别可调的JPEG2000的多个描述的方法。还讨论了作为网络条件的函数的最佳描述数目的识别
Multiple description coding (MDC) is a good way to combat packet losses in error-prone networks subject to packet erasures. However, redundancy tuning is often difficult, and this makes the generation of descriptions with good redundancy-rate-distortion performance a hard job. Moreover, the complexity of generating more than two descriptions represents a strong limitation to MDC. In this letter, we propose a method that exploits the data rate-distortion characteristics to generate multiple descriptions for JPEG 2000 with tunable redundancy levels. The identification of the best number of descriptions as a function of the network conditions is also addressed