| 一种超声成象测井图象无损压缩方法 |
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| 引用本文： | 汪钢,王燕.一种超声成象测井图象无损压缩方法[J].石油仪器,2010,24(1):71-73. |
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| 作者姓名： | 汪钢 王燕 |
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| 作者单位： | 1. 大庆油田有限责任公司测试技术服务分公司,黑龙江,大庆;哈尔滨工程大学计算机科学与技术学院,黑龙江,哈尔滨
2. 哈尔滨工程大学计算机科学与技术学院,黑龙江,哈尔滨 |
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| 摘 要： | 在井壁超声成象测井系统中，数据传输速率受测井电缆的限制，有必要研究超声成象图象的无损压缩算法。文章提出了一种适合于这种图象的无损压缩方案——分块自适应预测的编码算法。经过实验表明，该算法比较符合超声成象测井图象特点，其压缩倍数较现有无损压缩算法有很大提高，而算法复杂度没有明显增加。同时，整个算法完全是自适应的，无须预置码表，所需内存开销较小，因而特别适用于实时遥测系统。
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| 关 键 词： | 测井 超声成象 图象无损压缩 |
A lossless compression coding of ultrasonic well logging images. |
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| Wang Gang,Wang Yan.A lossless compression coding of ultrasonic well logging images.[J].Petroleum Instruments,2010,24(1):71-73. |
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| Authors: | Wang Gang Wang Yan |
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| Abstract: | In ultrasonic well logging, the data transfer rate of the logging system is limited by the transmission cables. Thus, data compression is necessary, but the common compression schemes are found to be not ideal for the well logging data ultrasonic well logging images, which have unique properties. Typical ultrasonic well logging images are studied and a suitable compression algorithm is proposed. Experiments show that this coding scheme is able to achieve higher compression ratios than lossless JPEC and JPEG... |
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| Keywords: | Logging Ultrasonic imaging Lossless compression of image |
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