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我国典型林区的遥感影像地形校正方法效果评价

发表时间:2013-03-31  浏览量:1130  下载量:381
全部作者: 王飒,陈晓玲,李熙,叶文韬
作者单位: 武汉大学测绘遥感信息工程国家重点实验室
摘 要: 比较了余弦校正模型、c校正模型、SCS+c校正模型、Minnaert校正模型4个经典模型在我国重点林区进行遥感影像地形校正的效果。以江西、云南两省的Landsat 5遥感影像作为研究对象,实现了上述4种典型的地形校正算法,并从视觉角度、影像统计角度和光照系数与像元值的相关性3个方面对地形校正方法进行定性和定量评价。经过比较分析后发现:对于江西影像数据,c校正方法最理想,余弦校正方法不适宜,易出现校正过度现象;对于云南省影像,SCS+c校正方法最优,余弦校正方法同样不适用。
关 键 词: 摄影测量与遥感技术;地形辐射校正;林区;TM影像
Title: Evaluation on topographic correction methods of remote sensing images for typical forest areas in China
Author: WANG Sa, CHEN Xiaoling, LI Xi, YE Wentao
Organization: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University
Abstract: This paper compared the topographic effects in remote sensing images for typical forest in China with the four classical methods including cosine correction model, c correction model, SCS+c correction model and Minnaert correction model. Therefore, they have the strong research significance in remote sensing images for topographic correction. Taking Landsat 5 images of Jiangxi province and Yunnan province as research subjects, four typical topographic correction methods were achieved. In addition, the topographic correction methods were qualitatively and quantitatively evaluated from the aspects of visual differences, image statistics and the relevance between the illumination coefficient and the pixel values. After analysis and comparison, it was found that, for Jiangxi image data, the c-correction method was the best correction performance, while cosine correction method was not appropriate since it easily occurred excessive phenomenon. For Yunnan image data, the SCS+c correction method was optimal, and the cosine correction method was also not suitable.
Key words: photogrammetry and remote sensing technology; terrain radiometric correction; forest areas; TM images
发表期数: 2013年3月第6期
引用格式: 王飒,陈晓玲,李熙,等. 我国典型林区的遥感影像地形校正方法效果评价[J]. 中国科技论文在线精品论文,2013,6(6):582-591.
 
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