基于EZW的水下作战环境应用产品压缩研究  

Image Compression of Underwater Operational Environment Application Product Based on EZW

作　　者：笪良龙[1] 刘晓妍[2] 

机构地区：[1]海军潜艇学院海军数据中心,山东青岛266071 [2]海军潜艇学院研究生大队,山东青岛266071

出　　处：《计算机仿真》2008年第9期6-8,49,共4页Computer Simulation

摘　　要：如何有效利用海军数据链系统传输战术水声环境产品是海军作战环境保障的关键问题之一。然而,战术水声环境数据具有较强的时空变化性,其数据量相对来说较为庞大,且在实际作战环境中,传输信道存在着各种干扰,特别是在海洋战场环境中,通信传输条件较差,传输时间紧迫,致使图像信息的传输容易受到外部因素的非正常干扰甚至中断,从而影响用户端对图像信息的接收。因此,寻求一种不依赖于通信时间和其它外部情况限制可随时结束编码实现数据压缩与渐进传输的编码方法是作战环境信息处理的一项必不可少的工作。运用目前较为先进的嵌入式小波零树编码算法对战术水声环境数据进行压缩,取得了较好的压缩效果,并在此基础上实现了图像的渐进传输,能够较好的适应复杂海洋战场的需求。Nowadays,how to use Naval data-link system to transmit tactical underwater acoustic environment product is one of the critical jobs for Navy operational environment protection.However,the amount of tactical underwater acoustic environment data is very large because of temporal and spatial variation.Besides,in actual operational environment,transmission channel has several kinds of jamming.Especially in sea battlefield environment,the communication of combat image information will be disturbed and even interrupted by the formidable transmission conditions and the short transmission time.So to find a proper compression method which can end encoding at any time and realize progressive transmission is quite an essential job for operational environment information processing.This paper uses Embedded Image Coding Using Zerotrees of Wavelet and obtains a good compression effect.In this situation,image progressive transmission has been done which can meet the requirement of complex sea operational environment.

关 键 词：小波变换 零树编码 数据压缩 多分辨率分解 渐进传输 

分 类 号：TP139.41[自动化与计算机技术—控制理论与控制工程]