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An improved topographic correction model based on Minnaert

机译：一种基于Minnaert的改进的地形校正模型

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摘要

The uneven distribution of solar radiation due to topographic relief can significantly change the correlation between reflectance and other features such as biomass in rugged terrain regions. In this article, we use the transfer theory to improve the Minnaert approach. After comparing topographic correction methods for Landsat 8 Operational Land Imager (OLI) and EO-1 Advanced Land Imager (ALI) imagery acquired from the mountainous region in Beijing, China, we used visual inspection, statistical analysis, and correlation analysis to evaluate the algorithms and performance of the proposed Minnaert-E approach. The results indicate that corrections based on non-Lambertian methods have better performance than those based on the Lambertian assumption. The correction performances can be ranked as the Minnaert-E, followed by the Minnaert and the SCS+C corrections, and, finally, the C-HuangWei correction, which performed the worst. We found that the Minnaert-E approach can effectively weaken the influence of terrain relief on pixels and restore the true reflectance of the pixels in the relief area. Further analysis indicates that the Minnaert-E has a better effect on image processing where the slope gradient is restricted to less than 10 degrees or between 30 degrees and 43 degrees.
机译：由于地形起伏而引起的太阳辐射的不均匀分布会显着改变反射率与其他特征（例如崎terrain的地形区域中的生物质）之间的相关性。在本文中，我们使用转移理论来改进Minnaert方法。在比较了从中国北京山区获得的Landsat 8作战地面成像仪（OLI）和EO-1高级地面成像仪（ALI）影像的地形校正方法之后，我们使用了视觉检查，统计分析和相关分析来评估算法Minnaert-E方法的性能和性能。结果表明，基于非朗伯方法的校正比基于朗伯假设的校正具有更好的性能。校正性能可以列为Minnaert-E，其次是Minnaert和SCS + C校正，最后是性能最差的C-HuangWei校正。我们发现Minnaert-E方法可以有效减弱地形起伏对像素的影响，并恢复起伏区域中像素的真实反射率。进一步的分析表明，Minnaert-E在图像处理方面具有更好的效果，其中将坡度梯度限制在小于10度或在30度至43度之间。

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  • 来源
    《GIScience & remote sensing》 |2016年第2期|247-264|共18页
  • 作者

    Gao Mingliang; Gong Huili; Zhao Wenji; Chen Beibei; Chen Zheng; Shi Min;

  • 作者单位

    Minist Educ, Key Lab Informat Acquisit & Applicat 3D, Beijing 100048, Peoples R China|Key Lab Resources Environm & GIS Beijing Municipa, Beijing 100048, Peoples R China|Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China;

    Minist Educ, Key Lab Informat Acquisit & Applicat 3D, Beijing 100048, Peoples R China|Key Lab Resources Environm & GIS Beijing Municipa, Beijing 100048, Peoples R China|Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China;

    Minist Educ, Key Lab Informat Acquisit & Applicat 3D, Beijing 100048, Peoples R China|Key Lab Resources Environm & GIS Beijing Municipa, Beijing 100048, Peoples R China|Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China;

    Minist Educ, Key Lab Informat Acquisit & Applicat 3D, Beijing 100048, Peoples R China|Key Lab Resources Environm & GIS Beijing Municipa, Beijing 100048, Peoples R China|Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China;

    Beijing Normal Univ, Key Lab Environm Change & Nat Disaster, Beijing 100875, Peoples R China;

    Key Lab Resources Environm & GIS Beijing Municipa, Beijing 100048, Peoples R China|Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    non-Lambertian reflection models; sky isotropic scattering; adjacent terrain reflection; topographic correction; Landsat 8 OLI;

    机译：非朗伯反射模型;天空各向同性散射;邻近地形反射;地形校正;Landsat 8 OLI;

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