| 能见度自动化计算方法 |
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| 引用本文： | 陈文兵,杨建伟,张小磊. 能见度自动化计算方法[J]. 计算机工程与应用, 2010, 46(30): 181-183. DOI: 10.3778/j.issn.1002-8331.2010.30.053 |
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| 作者姓名： | 陈文兵 杨建伟 张小磊 |
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| 作者单位： | 南京信息工程大学 数理学院，南京 210044 |
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| 基金项目： | 江苏省教育厅自然科学基金，南京信息工程大学科研基金 |
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| 摘 要： | 一种新的基于图像边缘处理的能见度自动计算方法被提出。它首先对大气科学中定义的能见度进行简化，接着对地面标记物边界区域提取边缘梯度、对比度、亮度等图像内在特征并针对这些特征利用简化的能见度定义进行计算，最后根据预定义的阈值定量地判定地面预设标志物的可见性从而实现计算能见度。一个能见度自动计算系统模型被建立，通过实验与实际观察结果的数据对比，验证了其算法的可行性和有效性，与已有算法相比其算法在计算的可靠性和有效性方面具有明显改善。
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| 关 键 词： | 能见度 边缘 梯度 对比度 亮度 |
| 收稿时间： | 2009-03-17 |
| 修稿时间： | 2009-5-11 |
Visibility auto-calculating method |
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| CHEN Wen-bing,YANG Jian-wei,ZHANG Xiao-lei. Visibility auto-calculating method[J]. Computer Engineering and Applications, 2010, 46(30): 181-183. DOI: 10.3778/j.issn.1002-8331.2010.30.053 |
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| Authors: | CHEN Wen-bing YANG Jian-wei ZHANG Xiao-lei |
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| Affiliation: | College of Mathematics & Physics，Nanjing University of Information Science & Technology，Nanjing 210044，China |
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| Abstract: | A new visibility auto-calculation method based on the edge of images is proposed.Firstly,the visibility definition of the atmospheric sciences is simplified.Then these inherent features for the landmark boundary region,such as gradient,contrast,brightness etc,are extracted and used to calculate visibility with the simplified definition.Finally,according to a preset threshold the visibility of landmark is quantitatively determined and visibility calculating is implemented.In this paper a system model for visibility auto-calculation is built,comparing the data between experiments and the actual observation,the feasibility and the effectiveness of the method is verified,in comparison with other methods,the method has improved significantly in the reliability and effectiveness for the calculation. |
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| Keywords: | visibility edge gradient contrast brightness |
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