计算机与现代化

• 应用与开发 • 上一篇    下一篇

基于LOD的大规模输电线路场景实时渲染算法优化

  

  1. (1.国网浙江省电力公司培训中心,浙江 建德 311600; 2.国网镇江市供电公司,江苏 镇江 212000; 
    3.国网杭州市萧山区供电公司,浙江 萧山 311200; 4.国网宿迁供电公司,江苏 宿迁 223800)
  • 收稿日期:2016-10-20 出版日期:2017-01-12 发布日期:2017-01-11
  • 作者简介:邓益民(1983-),男,湖北黄梅人,国网浙江省电力公司培训中心讲师,硕士,研究方向:输电线路三维仿真; 汤智谦(1988-),男,国网镇江市供电公司工程师,学士,研究方向:输电线路三维仿真,输电运维; 李红兵(1982-),男,国网杭州市萧山区供电公司工程师,本科,研究方向:虚拟仿真在输电线路中的应用。
  • 基金资助:
    国家自然科学基金资助项目(51607083)

Real-time Rendering Algorithm Optimization for Large Scale Transmission Lines Based on LOD

  1. (1. Training Center of State Grid Zhejiang Power Supply Company, Jiande 311600, China; 
    2. State Grid Zhenjiang Power Supply Company, Zhenjiang 212000, China; 
    3. State Grid Xiaoshan Power Supply Company, Xiaoshan 311200, China; 
    4. State Grid Suqian Power Supply Company, Suqian 223800, China)
  • Received:2016-10-20 Online:2017-01-12 Published:2017-01-11

摘要: 针对输电线路走廊大规模地形环境仿真渲染效率较低的问题,通过模拟人眼视角的特点,提出一种基于多控制因子的LOD算法。该算法在综合考虑距离、地形因素对地形网格进行简化的基础上,结合仿真场景大部分工作在漫游模式下的特点,将视点移动速度作为一个重要的控制因子放入评价函数中,优化后的算法在视角漫游状态下,可通过评价函数计算模型简化程度。对比实验表明本文算法比ROAM算法、限制四叉树算法具有更快的渲染速度。

关键词: 输电线路, 地形场景, 渲染算法, 多控制因子, 细节层次

Abstract: A LOD algorithm by simulating the characteristics of the human eye and based on multiple control factors is proposed which is used to solve the problem of the low efficiency of the large-scale terrain environment simulation for transmission line corridor. The algorithm comprehensively considers the distance and terrain factors to simplify the terrain mesh, combined with the characteristics of the simulation scene mostly working in roaming mode. Moreover, in the evaluation function, the viewpoint movement speed is regarded as an important control factor. The optimized algorithm can simplify the calculation model of the evaluation function in the perspective of roaming state. The comparison experiment shows that the proposed algorithm has faster rendering speed than the ROAM algorithm and the restricted quadtree algorithm.

Key words: transmission line, terrain, rendering algorithm, multi-factor control, level of detail (LOD)

中图分类号: