三维数字海图绘制技术研究  

Three-dimensional digital chart plotting technology research

作　　者：王玉鹏[1] 

机构地区：[1]哈尔滨商业大学网络与教育技术中心,哈尔滨150028

出　　处：《智能计算机与应用》2017年第3期109-113,共5页Intelligent Computer and Applications

摘　　要：随着三维海底地形图的广泛应用,多波束条带测深仪测量所获得的庞大数据量,给生成数字海图工作带来一系列的困难,大量的空间数据使绘制速度缓慢,不能满足数字海图制图应用对数据实时绘制的要求,因此,有关三维地形图高效、快捷生成的研究受到广泛关注。生成三维数字海图的关键在于数据的预处理和如何呈现数字海图,数据预处理方面重点阐述了坐标变换和数据拟合处理;生成数字海图使用了LOD技术,实验结果表明这2种方法结合能大大提高工作效率,降低了对计算机硬件的要求,并且能通过观察者的不同观察视角呈现出地形图的不同细节。With the widely application of the three-dimensional seabed topographic map,large amount of data of the multibeam strip sounder measurement brings a series of difficulties for generating the digital chart work. A large number of spatial data makes the drawing speed is slow,and is difficult to satisfy the requirement of data real-time rendering in the digital chart applications. Therefore,efficient and fast generation studies of the three-dimensional topographic map has been widely concerned. The key to generating 3 d digital chart is data preprocessing and how to present the digital chart. According to the preprocessing aspect,the paper expounds the coordinate transformation and data fitting processing; and uses the LOD technology to generate the digital chart. The experimental results show that the two methods can greatly improve the work efficiency,reduce the demand for computer hardware,and in the view of watchers of the different angle,reveals different details of a topographic map.

关 键 词：数字海图 坐标转换 LOD 小波增强 

分 类 号：TP217[自动化与计算机技术—检测技术与自动化装置]