红外与毫米波学报, 2016, 35 (6): 701, 网络出版: 2017-01-12
顾及BRDF和大气影响的摆扫式航空高光谱边缘辐射畸变校正
Edge radiation distortion correction of whiskbroom airborne hyperspectral image by considering BRDF effect and atmospheric attenuation
摆扫式成像光谱仪 边缘辐射畸变 大气衰减 方向性反射 whiskbroom hyperspectral imager edge radiation distortion atmospheric attenuation bidirectional reflectance distribution function(BR
摘要
讨论了顾及传输路径差异和方向性反射差异的边缘辐射校正方法, 并根据POS数据改正了由于姿态变化引起的边缘畸变.以实用型模块化成像光谱仪(Operational Modular Imaging Spectrometer, OMIS-Ⅲ)影像为例, 采用上述方法进行边缘校正, 最后采用近似同一扫描行上的同类地物光谱进行对比, 得出校正后的光谱吻合度比校正前更高.
Abstract
A correction method in consideration both of the radiometric transfer path and BRDF effects was presented. It uses POS data to correct the change of radiation distortion caused by flight attitude. Taking the OMIS-Ⅲ data for example, results show that the spectra of the same object in the middle and edge of corrected images can match better than uncorrected ones after using the correction methods proposed above.
田玉刚, 吴蔚, 杨贵. 顾及BRDF和大气影响的摆扫式航空高光谱边缘辐射畸变校正[J]. 红外与毫米波学报, 2016, 35(6): 701. TIAN Yu-Gang, WU Wei, YANG Gui. Edge radiation distortion correction of whiskbroom airborne hyperspectral image by considering BRDF effect and atmospheric attenuation[J]. Journal of Infrared and Millimeter Waves, 2016, 35(6): 701.
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