| 自适应二维行程编码及其应用 |
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| 引用本文： | 钱曾波
,陈荣国.自适应二维行程编码及其应用[J].测绘学院学报,1993(2). |
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| 作者姓名： | 钱曾波 陈荣国 |
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| 摘 要： | 本文在分析和比较多种信息编码技术的基础上,提出了一种自适应二维行程编码方法。该方法在规定的范围内自动选择二维行程,使得行程数尽可能少。行程值可采用不等长码字的熵编码法编码,以求最大限度地压缩数据。自适应二维行程编码扩展了基于线性四叉树的二维Morton行程编码,并具有更大的数据压缩比。初步实验表明,该方法具有较强的数据压缩能力,可用于压缩二值影像和少灰度影像(特别是块状影像和图形文字扫描影像),并可作为PIS(或GIS)的一种数据结构。
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| 关 键 词： | 数据压缩 二维行程编码 线性四叉树 |
Adaptive 2d run-length coding and its applications |
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| Qian Zengbo Chen Rongguo.Adaptive 2d run-length coding and its applications[J].Journal of Institute of Surveying and Mapping,1993(2). |
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| Authors: | Qian Zengbo Chen Rongguo |
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| Institution: | Qian Zengbo Chen Rongguo |
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| Abstract: | Based on the analysis of several information coding techniques, an adaptive 2D run-length coding method is presented. This method can minimize the total number of run-lenghtes automatically. The run-length value can be encoded by entropy coding. Adaptive 2D run-length coding is the expansion of 2D Morton run-lenght coding which is based on linear quadtree. Experiments show that this method has powerful capacibility of data compression. |
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