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| 基于Morton码的一种动态二维游程压缩编码方法 | |
| 引用本文： | 孟庆武,王文福,孟露,伊海波.基于Morton码的一种动态二维游程压缩编码方法[J].测绘科学,2011,36(3):202-203. |
| 作者姓名： | 孟庆武 王文福 孟露 伊海波 |
| 作者单位： | 1. 黑龙江工程学院测绘工程学院,哈尔滨,150050 2. 东北林业大学林学院,哈尔滨,150086 3. 黑龙江第一测绘工程院,哈尔滨,150086 |
| 基金项目： | 黑龙江省教育厅2010年度(面上)科技研究项目(11551411) |
| 摘 要： | 本文在分析常规二维游程压缩编码方法缺陷的基础上,提出了一种基于Morton码的二维游程压缩编码方法.该方法按Monon码由小到大顺序扫描栅格数据,对于由2×2个像元组成的格网由Morton码生成格网左上角像元的行列号,并且用动态线性表通过比较像元的属性值,存储压缩结果,建立二维游程编码.实验表明,该编码方法在运行时间和... |
| 关 键 词： | 栅格数据 Morton码 二维游程 线性四叉树 压缩编码 |
A method of dynamic compressing coding using 2D run-length based on Morton code |
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| MENG Qing-wu,WANG Wen-fu,MENG Lu,YI Hai-bo.A method of dynamic compressing coding using 2D run-length based on Morton code[J].Science of Surveying and Mapping,2011,36(3):202-203. | |
| Authors: | MENG Qing-wu WANG Wen-fu MENG Lu YI Hai-bo |
| Institution: | ③(①Technology Institute of Surveying and Mapping,Heilongjiang Institute of Technology,Harbin 150050,China;②Forest Institute,Northeast Forestry University,Harbin 150086,China,③First Technology Institute of Surveying and Mapping of Heilongjiang,Harbin 150086,China) |
| Abstract: | On the basis of analyzing some disadvantages of the traditional 2D run-length compressing coding,a method of dynamic compressing coding using 2D run-length was put forward in this paper.The method scanned raster data by Morton code from small to large and used a grid of 2×2 pixels to extract row and column numbers of the left-up pixel by Morton code from the original raster data.It used a dynamic linear table through comparing among attribute values of the pixels,saved compressing results and made dynamical 2D run-length code.This experiments showed that this method was better than the traditional 2D run-length compressing coding in the running speed and memory requirement. |
| Keywords: | raster data Morton code two dimensional run-length linear quadtree compressing coding |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |