一种超声电视测井图像的无失真压缩方案  

Lossless Compression of Ultrasonic Televiewer Image

作　　者：张正炳[1] 朱光喜[1] 朱耀庭[1] 

机构地区：[1]武汉华中理工大学

出　　处：《测井技术》1997年第4期262-264,275,共4页Well Logging Technology

基　　金：国家自然科学基金

摘　　要：张正炳，朱光喜，朱耀庭．一种超声电视测井图像的无失真压缩方案．测井技术，１９９７，２１（４）：２６２～２６４从介绍无失真图像编码的基本理论入手，分析了实际套管井中超声电视测井图像的特点，提出了一种适合于这种图像的无失真压缩方案——自适应位面分块编码方法。实验结果表明，利用此方法比用零阶Ｈｕｆｍａｎ编码方法可获得更高的压缩比。The fundamental theory on lossless image coding is briefly reviewed. A typical ultrasonic televiewer image in casing is analyzed by dividing it into 8 bit planes, and it is discovered that the black/white points in the most significant bit planes assemble into blocks, while the black/white points in the least significant bit planes distribute randomly. According to this property, an adaptive bit plane block coding scheme is proposed in the paper. Each bit plane is divided into nonoverlapping blocks which are encoded with an adaptive HV (Horizontal Vertical) partition algorithm. Experimental results show that the compression ratio of this method is higher than that of the zeroorder Huffman coding method.

关 键 词：声波测井 超声成像测井 图像处理 压缩 编码 

分 类 号：P631.814[天文地球—地质矿产勘探]