LOD processing method for large-scale scene model web end dynamic rendering

• Main Authors: QI YUE, YIN XUNGANG, DU WENXIANG
• Format: Patent
• Language: Chinese; English
• Published: 21.01.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention relates to a web-side dynamic rendering LOD processing method for a large-scale scene model. The method comprises the following steps: firstly, setting subdivision parameters to pre-calculate a grid model; storing the result by using a new file format; and finally, selecting and rendering the multi-resolution model based on viewpoints according to an adaptive error function. The method is characterized in that subdivision of different detail levels and node numbers can be flexibly carried out on a large-scale scene model, it is guaranteed that good details can be kept during rendering, and the method is suitable for dynamic scheduling and rendering display of model data of large-scale static scenes. 本发明是面向大场景模型web端动态渲染LOD处理方法。该方法首先设置细分参数对网格模型预计算；然后使用了一种新的文件格式对结果进行存储；最后根据自适应误差函数基于视点对多分辨率模型进行选择和渲染。本发明的特点是对大场景模型可以灵活地进行不同细节层次和节点数量的剖分，保证在渲染时能够保持较好的细节，适用于大规模静态场景的模型数据的动态调度及渲染显示。