The 3D simulation database setup for the realistic scene of the typical crops

Computer simulation is one of the vegetation canopy reflectance modeling method, which can realistically simulate the radiation interaction process within vegetation canopies and their dependence on various canopy structural parameters. In this paper, we mainly use the computer simulation methods, combined computer graphics with radiosity equation to simulate the radiative transfer process of the scene in both visible and near-infrared regions. There are file components in our 3D model: computer graphics technique to generate 3D objects; radiosity equation to describe the radiation exchange among the 3D objects; graphics based methods to compute view factors; radiosity computation and 3D image display of the objects; lastly introduced our 3D simulation database built up to put all information in it, such as simulated vegetation canopy´s 3D structure files and the spectral data information of the vegetation and scene, in order to convenience users to query and retrieve correlating spectral information