| 基于多重相关方差的X线头影片的多重分形分析 |
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| 引用本文： | 蒋爱平,王祁.基于多重相关方差的X线头影片的多重分形分析[J].传感技术学报,2007,20(1):123-127. |
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| 作者姓名： | 蒋爱平 王祁 |
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| 作者单位： | 哈尔滨工业大学电气工程与自动化学院,哈尔滨,150001;黑龙江大学电子工程学院,哈尔滨,150080;黑龙江大学电子工程学院,哈尔滨,150080 |
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| 基金项目： | 黑龙江省自然科学基金，黑龙江省教育厅科学技术研究项目，黑龙江大学校科研和教改项目 |
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| 摘 要： | 该文提出了一种基于多重相关方差的计算多重分形谱的算法.首先构建了一个X线图像的五邻域多重相关空间,定义了图像的多重分形谱的概率测度,通过对图像的多重分形谱与权重因子相关性的分析,进一步判定线形区间及适当的权重因子,得到了X线头影片图像的多重分形的线性区间,验证了其多重分形的几何性质.该算法具有保持和加强图像的局部特性,突出图像的细微处的特点,克服了多重分形谱对噪声敏感的缺点,能有效抑制图像中的噪声.
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| 关 键 词： | 多重分形 多重相关 边缘检测 头影测量 X线图像 |
| 文章编号： | 1004-1699（2007）01-0123-05 |
| 收稿时间： | 2006-01-25 |
| 修稿时间： | 2006-03-24 |
Multifractal Analysis of X-ray Cephalogram Based on Multi- correlation Variance |
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| JIANG Aiping ,WANG Qi.Multifractal Analysis of X-ray Cephalogram Based on Multi- correlation Variance[J].Journal of Transduction Technology,2007,20(1):123-127. |
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| Authors: | JIANG Aiping WANG Qi |
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| Affiliation: | 1. Faculty of Electrical Engineering & Automatics Harbin Institute of Technology, Harbin,150001
2. Faculty of Electronic Engineering Heilongjiang University ,Harbin,150080 |
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| Abstract: | Multi-correlation variance approach based on multifractal used to estimate the multifractal spectrum is focused. The probability based on X-ray image multi-correlation sp, ace is defined that can be used to estimate the multifractal spectrum. The multifractal spectrum property of cephalogram is analyzed and the relationship between the multifractal spectrum and its weight is discussed, so the multifractal linear region of cephalogram is determined. The geometrical properties of its multifractal are verified. The above approach shows that the noise can be repressed effectively, the local property of an image can be remained as much as possible and the fine property can be stressed. |
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| Keywords: | multifractal multi-correlation edge detection cephalometric X-ray |
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