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基于分形及纹理分析的城市遥感影像阴影去除
引用本文:何凯,赵红颖,刘晶晶,王成优.基于分形及纹理分析的城市遥感影像阴影去除[J].天津大学学报(自然科学与工程技术版),2008,41(7):800-804.
作者姓名:何凯  赵红颖  刘晶晶  王成优
作者单位:[1]天津大学电子信息工程学院,天津300072 [2]北京大学遥感与地理信息系统研究所,北京100871 [3]中国矿业大学机电与信息工程学院,北京100083
基金项目:天津市自然科学基金,教育部博士点基金新教师项目 
摘    要:为有效去除城市遥感影像中阴影效应所产生的影响,实现阴影区域的自动检测及区域内景物重建,利用纹理分析的方法,通过计算共生矩阵及其相关指数来确定阴影区域,以实现阴影区域的自动检测;同时利用分形插值中的随机中点替代法对阴影区域内景物进行了复原,真实再现了阴影区域内的景物特征.对实际航空遥感影像的处理结果表明,该方法能有效实现遥感影像阴影区域的自动检测及区域内的景物重建.

关 键 词:阴影检测  分形  共生矩阵  纹理分析  随机中点替代法

Shadow Removal of City's Remote Sensing Image Based on Fractal and Texture Analysis
HE Kai,ZHAO Hong-ying,LIU Jing-jing,WANG Cheng-you.Shadow Removal of City''s Remote Sensing Image Based on Fractal and Texture Analysis[J].Journal of Tianjin University(Science and Technology),2008,41(7):800-804.
Authors:HE Kai  ZHAO Hong-ying  LIU Jing-jing  WANG Cheng-you
Institution:HE Kai, ZHAO Hong-ying , LIU Jing-jing, WANG Cheng-you ( 1. School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; 2. Institute of Remote Sensing and Geographic Information System, Peking University, Beijing 100871, China; 3. School of Mechatronics and Information Engineering, China University of Mining and Technology, Beijing 100083, China)
Abstract:To effectively remove the shadows in city's remote sensing image, the method based on texture analysis was used to detect the shadow region automatically and rebuild the objects in it further. Based on calculating the cooccurrence matrix and its relevant parameters, the shadow region was conformed and detected automatically. Simultaneously, the objects in shadow region were rebuilt based on the random midpoint replacement method of fractal interpolation, with the characteristic of the real objects in it retrieved. The processing result of real aerial remote sensing image proves that the shadow region can be detected automatically and the objects in it can be rebuilt with this method.
Keywords:shadow detection  fractal  co-occurrence matrix  texture analysis  random midpoint replacement method
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