| 图像扫描波动性定量标准及分形扫描矩阵的快速生成 |
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| 引用本文： | 刘向东,段晓东,王光兴,朱伟勇.图像扫描波动性定量标准及分形扫描矩阵的快速生成[J].数据采集与处理,2002,17(2):146-150. |
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| 作者姓名： | 刘向东 段晓东 王光兴 朱伟勇 |
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| 作者单位： | 1. 大连民族学院图形图像与网络研究所,大连,116600
2. 东北大学信息科学与工程学院,沈阳,110004 |
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| 基金项目： | 国家自然科学基金 (编号 :699740 0 8)，辽宁省自然科学基金，博士后基金资助项目 |
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| 摘 要： | 在图像扫描技术中，首要的问题是如何尽量减小生成数据的波动性。本文在深入研究各种扫描技术的基础上，定义了一种描述扫描产生数据波动性的度量指标，基于图像存在局部连续性，证明了Hilbert分形曲线扫描优于其他传统扫描，表明在生成数据的最佳连续特性，并通过实验 分析了图像扫描方式对DCT变换编码效果的影响。最后，给出了一个构造Hilbert扫描矩阵的快速算法。
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| 关 键 词： | 波动性定量标准 分形扫描矩阵 Hilbert曲线 DCT变换 图像扫描 图像编码 |
| 文章编号： | 1004-9037(2002)02-0146-05 |
| 修稿时间： | 2001年4月23日 |
Measurement of Undulation on Image Scanning and a Fast Algorithm for Constructing Hilbert Scanning Matrix |
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| Liu Xiangdong Duan Xiaodong Institute of Graphics,Images & Networks,Dalian Nationalities University Dalian ,P.R.China Wang Guangxing Zhu Weiyong.Measurement of Undulation on Image Scanning and a Fast Algorithm for Constructing Hilbert Scanning Matrix[J].Journal of Data Acquisition & Processing,2002,17(2):146-150. |
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| Authors: | Liu Xiangdong Duan Xiaodong Institute of Graphics Images & Networks Dalian Nationalities University Dalian PRChina Wang Guangxing Zhu Weiyong |
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| Affiliation: | Liu Xiangdong Duan Xiaodong Institute of Graphics,Images & Networks,Dalian Nationalities University Dalian 116600,P.R.China Wang Guangxing Zhu Weiyong |
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| Abstract: | The central problem of the image scanning techniques is how to decrease the undulation of the generated data. Based on the researches, an objective quantity exponent is defined to measure the undulation of the scanning techniques. By computer experiments, it is proved that the Hilbert scanning technique is superior to the other scanning techniques and the data are the most continuous based on the hypothesis that the images are continuous in the small range. The effect on the DCT coding of the scanning techniques is analyzed by computer experiments. Finally, a fast recurrent algorithm for constructing the Hilbert scanning matrixes is given. |
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| Keywords: | image compression fractal Hilbert curve DCT transition |
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