NDLI: Simulation of a Simplified Coniferous Branch based on Radiosity Method

Content Provider	IEEE Xplore Digital Library
Author	Xinyun Wang Wenhan Qin Guoqing Sun Zhifeng Guo
Copyright Year	2008
Description	Author affiliation: SSAI/NASA GSFC, Greenbelt, MD (Wenhan Qin) \|\| Inst. of Remote Sensing Applic., Chinese Acad. of Sci., Beijing (Xinyun Wang; Guoqing Sun; Zhifeng Guo)
Abstract	A simplified 3-D structure of coniferous tree canopy is used to replace the realistic but very complicated 3-D forest scene in order to study how the simplification method affects canopy reflectance. Results in this study show that it is feasible to model coniferous tree canopy scattering using simplified branch model (with no needles). With this approach, one can render coniferous forest stand in regional-scale so that radiosity-based model such as RGM can be used to study radiation regime in large-scale, 3-D, heterogeneous structures. Two kinds of conifer branches are simulated and compared: (1) coniferous branches with short needles; (2) equivalent part of "green" branches without needles. We used RGM (radiosity-graphics combined model) to calculate BRF (bidirectional reflectance factor) at visible and near infrared bands, and compared BRFs between conifer branches with and without needles. In most cases both agreed well.
File Size	249685
File Format	PDF
ISBN	9781424428076
DOI	10.1109/IGARSS.2008.4779464
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Needles Layout Vegetation Reflectivity Large-scale systems Bidirectional control Rendering (computer graphics) Computer graphics Shape Remote sensing BRF Simplified Method RGM model L-systems
Content Type	Text
Resource Type	Article

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