自适应屏幕分辨率的海底地形建模研究  

Research on Seabed Terrain Modeling with Adaptive Screen Resolution

作　　者：徐建华 顾浩[2] 曾艳阳[3] 李晓明 XU Jian-hua;GU Hao;ZENG Yan-yang;LI Xiao-ming(Sanjiang University Nanjing Jiangsu 210012,China;Northwestern Polytechnical University Xian Shanxi 710072,China;Henan Polytechnic University,Jiaozuo Henan 454000,China)

机构地区：[1]三江学院,江苏南京210012 [2]西北工业大学,陕西西安710072 [3]河南理工大学,河南焦作454000

出　　处：《计算机仿真》2022年第4期142-145,共4页Computer Simulation

基　　金：国家自然科学基金(61503124)。

摘　　要：针对海底地形水深数据插值点数定量化计算问题,提出一种自适应屏幕分辨率的海底地形三维可视化建模方法。首先提取电子海图存储的稀疏水深数据,利用三角形内插法得到网格顶点高度值,接着将海底地形水平面均匀划为初始二维网格,然后自动获取显示设备屏幕分辨率,引入单元网格像素值定量化求解得到插值点数,最后采用多项式拟合法对初始网格顶点高度值进一步内插,生成海底地形细分三维网格。仿真结果表明,上述方法能够定量化求解出海底地形水深数据插值点的数量,提高建模效率和准确度。In order to solve the problem of quantitative calculation of interpolation data of seabed terrain, a 3D visualization modeling method of seabed terrain based on adaptive screen resolution was proposed. Firstly, the sparse water depth data stored in the electronic chart was extracted, and the water depth value of the mesh vertex was obtained by using the triangle interpolation method. Secondly, the seabed terrain level was evenly divided into initial two-dimensional grids. Thirdly, the screen resolution of the display device was automatically obtained. The pixel value of the cell grid was introduced to solve the interpolation points. Finally, the polynomial fitting method was used to further interpolate the initial mesh vertex water depth value. The simulation results demonstrate that the method can quantitative calculation of interpolation data of seabed terrain, and improve the efficiency and accuracy of modeling.

关 键 词：海底地形 屏幕分辨率 插值 自适应 建模 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]