Research on method of high-precision 3D scene optical remote sensing imaging simulation

摘要

Aiming at the traditional optical remote sensing imaging simulation(ORSIS) method can't meet the requirements of high resolution and precision quantitative remote sensing application, this paper proposes a centimeter-scale three-dimensional scene ORSIS method based on visible light and near infrared. By classifying the texture image of the feature model in the 3D scene, the material texture mapping method is used to distinguish the different materials in the single facet without increasing the facet. Using ray tracing to calculate the radiance at the entrance, the bidirectional reflection characteristics of the target material and the mixed pixel effect are considered. Finally, by comparing the simulation result image with the radiance of the real image taken by GF-2, the relative error between the two is less than 10%. The results show that the method can provide a reference for the research of high-precision 3D digital scenes ORSIS.