| Landsat-8遥感影像的BRDF校正研究 |
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| 引用本文： | 呙尧,李婉,宋孟肖. Landsat-8遥感影像的BRDF校正研究[J]. 测绘与空间地理信息, 2017, 0(8) |
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| 作者姓名： | 呙尧 李婉 宋孟肖 |
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| 作者单位： | 武汉大学 遥感信息工程学院,湖北 武汉,430079 |
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| 摘 要： | BRDF校正能消除Landsat-8遥感影像中由于太阳角、观测角与真实角度偏差引起的色差不一致,因此本文对多种体散射核与几何光学核的组合进行研究,在选用最佳核函数组合的基础上,采用改进的误差模型求解BRDF校正参数,最后完成Landsat-8影像的BRDF校正。实验结果表明:Ross Thick核和Li-Sparse核为BRDF模型的最佳核组合,并且利用改进的平差模型能提高解算精度,经过BRDF校正后,影像的"二向反射"现象得到明显改善。
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| 关 键 词： | BRDF校正 体散射核 几何光学核 |
BRDF Calibration Research for Landsat-8 Remote Sensing Image |
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| GUO Yao,LI Wan,SONG Meng-xiao. BRDF Calibration Research for Landsat-8 Remote Sensing Image[J]. Geomatics & Spatial Information Technology, 2017, 0(8) |
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| Authors: | GUO Yao LI Wan SONG Meng-xiao |
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| Abstract: | BRDF calibration is designed to eliminate the inconsistencies caused by the sun angles and observation angles.In this paper, different volume-scattering kernels in combination with two kinds of geometric-optical scattering kernel are used to calibrate Landsat8 image with an advanced error equation.Study finds that accuracy of model is highly promoted, and the best kernel combination in model is RossThick and Li-Sparse. |
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| Keywords: | BRDF calibration volume-scattering kernel geometric-optical scattering kernel |
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