Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model

	Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model
	Wang, Zhihui 1; Liu, Liangyun 1
刊名	IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
	2016
卷号	9 期号:9 页码:4450-4463
关键词	VARIABLE CANOPY RESISTANCE PENMAN-MONTEITH EQUATION LARGE-APERTURE SCINTILLOMETER ENERGY-BALANCE CLOSURE OF-DAY MEASUREMENTS EVAPORATIVE FRACTION BOWEN-RATIO EDDY-COVARIANCE NORTHWEST CHINA SOIL-MOISTURE
通讯作者	Liu, Liangyun (liuly@radi.ac.cn)
英文摘要	Due to the intrinsic observing characteristics of airborne sensors, the bidirectional effect is inevitable and happens regardless of the number of flightlines being considered. This affects the quantitative use of aerial data over large regions. In this paper, a simple "two-step" bidirectional effect correction scheme based on Ross-Li model (RLM) is developed for multiple-flightline aerial images. First, the local RLM coefficients and local correction factors (K1) for each flightline were derived independently based on original observed reflectance; next, the global RLM coefficients and global correction factors (K2) for all flightlines were derived based on simulated directional-to-nadir reflectance. Nadir view bidirectional reflectance distribution function (BRDF)-adjusted reflectance (NBAR) from multiple-flightline for fixed illumination condition of "base flightline" was produced using the combination of the two correction factors (K1, K2). Correction experiments conducted using multiple-flightline push-broom compact airborne spectrographic imager aerial images and the NBAR produced by the "two-step" BRDF correction method were compared to other "one-step" methods. The results show that the "two-step" method gave a better BRDF correction performance - a slower trend change for average of NBARs at a constant viewing angle as varying sun-target-sensor geometry, indicating that the trends of bidirectional effects within a given flightline and between flightlines were effectively normalized. It is concluded that our normalization scheme can be applied to remove bidirectional effects of multiple-flightline aerial images without multiangular observations if reasonable land-cover types in the aerial images were determined. © 2016 IEEE.
学科主题	Engineering; Physical Geography; Remote Sensing; Imaging Science & Photographic Technology
类目[WOS]	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:20163502763796
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39280]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 2.100094, China 3. Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 4.450003, China 5. Key Laboratory of the Loess Plateau Soil Erosion and Water Process and Control, Ministry of Water Resources, Zhengzhou 6.450003, China 7. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 8.100101, China
推荐引用方式 GB/T 7714	Wang, Zhihui,Liu, Liangyun. Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2016,9(9):4450-4463.
APA	Wang, Zhihui,&Liu, Liangyun.(2016).Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model.IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,9(9),4450-4463.
MLA	Wang, Zhihui,et al."Correcting Bidirectional Effect for Multiple-Flightline Aerial Images Using a Semiempirical Kernel-Based Model".IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 9.9(2016):4450-4463.