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A virtual forest modeling approach using SRTM and TM data is proposed. L-systems (a plant modeling language) is used to create the coniferous and deciduous tree models with different LAI (Leaf Area Index) values. Output images of these tree models are planted on the 3D terrain built from SRTM data, via the image-based method of crossed-billboards. TM image pl93r026 is used to generate the land use...
It is vital to reconstruct a three-dimensional terrain by a few sparse points in the digital elevation model (DEM). However, the reconstructed surfaces from elementary functions(e.g. lines and cubics) appear too smooth to represent a terrain with self-affinity property. The conventional fractal reconstruction methods are time-consuming and require too many parameters to set. In this paper we propose...
This paper evaluated the capability of FLAASH in ENVI software to make atmospheric correction for Hyperion hyperspectral image and ALI image. Hyperion and ALI sensors are two of the three instruments onboard NASA EO-1 satellite, New Millennium Program (NMP) launched on November 21, 2000, and Hyperion is the first spaceborne hyperspectral imaging spectrometer. The study area is Zhangye city (37deg28'N-39deg57'N,...
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