湿地公园无人机航测的高效三维建模与呈现

针对湿地公园地貌和生态特征，以实例为研究对象，对湿地公园无人机航测数据的高效三维建模和轻量化呈现技术进行研究，解决大型实景模型建模效率低、实时呈现与浏览困难和缓慢等瓶颈问题。提出基于二次高斯径向基函数线性组合方程及对航测空间位置数据进行四叉树分割的三维建模算法，并实现模型的光滑连接和优化处理。实验表明，提出方法一改航测数据三维建模的传统繁琐建模方法和过程，利用少量的建模数据高效快速构建和呈现大规模三维模型，并大幅降低构建模型的数据量和获得满意的建模视觉效果。该方法不仅适用于湿地公园大规模三维高效建模与呈现，对自然风景区、林区等生态保护区的大规模三维建模与呈现亦有参考价值。

Efficient 3D modeling and presentation of aerial survey for wetland park

In order to solve bottleneck problems such as slow and difficulty of real-time presentation and browsing of large-scale realistic models, aiming at the landform and ecological characteristics of wetland parks, this paper used examples as the research object to study the efficient three-dimensional modeling and lightweight presentation technology of UAV aerial survey data of wetland parks. Based on the linear combination equation of quadratic Gaussian radial basis function, this paper proposed a quadtree segmentation three-dimensional modeling algorithm for aerial survey spatial position data, and realized the smooth connection and optimization of the model. Experiments show that the method changes the traditional cumbersome modeling method and process of 3D modeling of aerial survey data. It used a small amount of modeling data to efficiently and quickly build and present large-scale 3D models, and greatly reduce the amount of data for building models with satisfied visual effects. The method is not only suitable for efficient large-scale 3D modeling and presentation of wetland parks, but also has reference value for large-scale three-dimensional modeling and presentation of ecological protection areas such as natural scenic spots and forest areas.