多光源照射下目标图像实时生成方法  

Method of real-time target image generation undermulti-light source illumination

作　　者：张玉双[1] 谢晓钢[1] 苏华[1] 王锐 张飞舟[1] Zhang Yushuang;Xie Xiaogang;Su Hua;Wang Rui;Zhang Feizhou(Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;Beijing Mana VR Co.,Ltd,Beijing 100094,China)

机构地区：[1]北京应用物理与计算数学研究所,北京100094 [2]北京神秘谷科技有限公司,北京100086

出　　处：《强激光与粒子束》2024年第6期41-47,共7页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(52103073)。

摘　　要：由于地理位置、太阳、大气环境等因素限制,无法获取空间目标在各种姿态、光照条件、特别是激光、太阳和背景光共同作用下的实际成像。提出一种多光源照射下目标图像实时生成方法。该方法基于计算机图形学中纹理映射思想,采用现代图形显卡编程技术和帧缓存对象特性,在GPU(Graphics Processing Unit)端采用着色器语言实现多光源作用下目标亮度值高效计算和真实感增强;采用开源三维图形引擎OSG(Open SceneGraph)支持多种格式三维模型文件,提高与国产麒麟操作系统及常用战场态势显示软件的兼容性。仿真实验验证了该方法的有效性和优越性。Due to factors such as geographical position,sun and atmospheric environment,it is impossible toobtain the real images of space targets under various postures and illumination conditions,let alone under theinteraction between laser,sun and background light.In this paper,a real-time target image generation method undermulti-light source irradiation is proposed.This method is based on the modern graphics card programming techniqueand frame caching object advantages.At the GPU(Graphics Processing Unit)side,shader language is used toefficiently calculate target brightness values and enhance realism under the influence of multi-light source.The open-source 3D graphics engine named OSG(Open Scene Graph)helps support 3D model files of various formats andimprove the compatibility with the domestic Kirin operating system as well as common battlefield situation displaysoftware.Simulation experiments demonstrate the effectiveness and superiority of the proposed method.

关 键 词：多光源 图像生成 GPU编程 OSG 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]