Study of BRDF changing feature of winter wheat in different season

Feng Zhao; Jin-di Wang; Shihao Tang; Guangjian Yan; Zi-ti Jiao; Xiaowen Li

doi:10.1117/12.539013

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25 September 2003 Study of BRDF changing feature of winter wheat in different season

Feng Zhao; Jin-di Wang; Shihao Tang; Guangjian Yan; Zi-ti Jiao; Xiaowen Li

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Proceedings Volume 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition; (2003) https://doi.org/10.1117/12.539013
Event: Third International Symposium on Multispectral Image Processing and Pattern Recognition, 2003, Beijing, China

Abstract

The anisotropic reflectance of vegetation canopy is mainly determined by its spectral and structural features, and can be described by Bidirectional Reflectance Distribution Function (BRDF). In this article, we select the winter wheat from the beginning of April to the beginning of May 2001 at Shunyi county, north of Beijing, as the research object, to study its BRDF changing rule with the changing time. In the process we compute the structural scattering index (SSI) by inverting the semiempirical linear kernel-driven BRDF model, and analyze its relation with the leaf area index (LAI) of winter wheat. The results show that there is a clear linear relationship between SSI and LAI of winter wheat. So SSI can well be used to reflect the seasonal BRDF changing rule of winter wheat.

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Feng Zhao, Jin-di Wang, Shihao Tang, Guangjian Yan, Zi-ti Jiao, and Xiaowen Li "Study of BRDF changing feature of winter wheat in different season", Proc. SPIE 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition, (25 September 2003); https://doi.org/10.1117/12.539013

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KEYWORDS

Bidirectional reflectance transmission function

Near infrared

Scattering

Vegetation

Reflectivity

Sun

Data modeling

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