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中文摘要：
针对具有时间约束图像的无线网络传输中的数据出错和丢失问题,提出一种多重描述编码（multiple description coding,MDC）结合网状多径路由的图像传输方法。源节点利用MDC将图像帧分成多个等同重要的描述,利用提出的多径路由策略寻找多条边不相交路径,并选择合适的中间合并点对描述进行合并,利用链接错误信息对受损描述进行中间修复,目的节点利用2×2过滤器和像素错误概率权重进行解码,根据其空间邻居插补丢失或损坏的像素。实验结果表明,提出的方法能够有效提高无线信道的容错性能,实现高信噪比图像传输。
英文摘要：
For the issue of the time constraints image data error and lost in wireless network transmission, this paper proposed a wireless image transmission method based on fusion of multiple description coding （MDC） and multipath routing. Firstly, source node used MDC to divide image frame into several equally important descriptions. Then,it used the proposed muhipath routing strategy find multiple edge disjoint paths and selected the appropriate intermediate merge points to combine descriptions, and intermediately recovered the damage description by using link error information. Finally, the destination node used 2 × 2 filters and pixel error probability weight to decode, and interpolated the missing or damaged pixels according to spatial neighbor. The experimental results show that proposed method has effectively improved the error-resilient ability of wireless channel and realizes image transmission with high signal-to-noise ratio.
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