基于AR地理教学沙盘的实时沙方测量  

Sand Volume Real-Time Measurement Based on AR Geography-Teaching Sandbox

作　　者：张秋兰 黄玉春[1] 杨星宇 王磊 ZHANG Qiulan;HUANG Yuchun;YANG Xingyu;WANG Lei(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079

出　　处：《测绘地理信息》2024年第3期139-144,共6页Journal of Geomatics

基　　金：国家自然科学基金(41671419)。

摘　　要：基于三维激光扫描技术的沙土方量测量虽然效率高、精度高,但是设备成本高。综合利用投影仪和Kinect v2深度相机,开发了一套AR地理教学沙盘,为沙方量实时测量及沙方铲运作业提供了一个新的解决方案。首先,对深度相机和投影仪的相对位置关系进行了精确标定;然后,提出了基于不规则三角网空间模型的沙方量实时测量方法,并利用AR地理教学沙盘进行沙方量的实时渲染及其投影;最后,通过大量不同实验,验证了本文沙方量测算法的准确性和实时性。The sand volume measurement based on the 3D la⁃ser scanning technology is efficient and of high-precision,but cost is high.Therefore,this paper develops the AR Geogra⁃phy-teaching Sandbox via the combination of the projector and Kinect v2 depth camera,providing a new solution for sand volume real-time measurement and sand scraping opera⁃tions.Firstly,the depth camera and projector are accurately calibrated.Secondly,the real-time measurement method of sand volume based on the triangulated irregular network mod⁃el is proposed.Then,the AR Geography-teaching Sandbox are used for real-time rendering and projection of sand vol⁃ume.Finally,a large amount of different experiments are car⁃ried to verify the measurement accuracy and the speed of the algorithm.

关 键 词：沙方量 实时测量与渲染 AR地理教学沙盘 

分 类 号：P208[天文地球—地图制图学与地理信息工程]