Tessellation Based Multiple Description Coding

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• 作者：Canhui Cai ; Jing Chen
• 刊名：Lecture Notes in Computer Science
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：3796
• 期：1
• 页码：pp.68-77
• 全文大小：2,826 KB

文摘

A novel multiple description coding framework, Tessellation Based Multiple Description Coding (TMDC), is proposed in this paper. In this work, we first decompose each wavelet coefficient into two parts by bit-wise-down sampling, generating odd and even wavelet transformed images. Then, we restructure these two images in wavelet blocks and group the wavelet blocks to form the row and column packets. These packets are separately dispatched through diverse channels. Since the row and the column packets have limited intersection, even with the loss of row and column packets simultaneously, the proposed system exhibits good error resilient ability. Experimental results have verified the improved performance of the proposed algorithm.