基于Motion JPEG2000的分布式无线传感器网络视频压缩新算法

在保证传输图像质量的前提下最小化能量消耗，是基于无线传感器网络(WSN)的视频监视系统设计中的一个关键问题。本文针对WSN结构特点，提出了一种分布式视频压缩算法。该算法基于Motion JPEG2000的分片编码方式，定义了两个参数来判定视频序列中一帧图像区域的重要性大小，一个是片的复杂度，另一个是片的运动程度。从而以低复杂度算法实现了自适应的码率分配。文中基于此算法提出WSN构建方案。仿真实验结果表明，本文提出的分布式视频压缩方案，能有效减小WSN中数据传输能量消耗，同时得到较好的图像重建效果。

A Distributed Video Compression Scheme in Motion JPEG2000 for Wireless Sensor Network

To minimize the energy cons amp lion without violating image quality is a key problem con?cerned in a video- surveillance system design based on wireless sensor network (WSN) . Aiming at the WSN architecture feature, we proposed a new distributed video compression algorithm. Based on tile encoding of Motion JPEG2000, the two parameters, the complexity and the motion activity of a tile, are defined by the algorithm to discern the important regions. Thus an adaptive rate-allocation is real- izea in a lower complexity algorithm. A WSN arcnitecture scheme was given by the proposed algo?rithm ? Simulation results show that the proposed scheme can effectively reduce data transmission ener?gy consumption and meanwhile leads to a satisfactory image quality.