基于特征提取的地形渲染增强方法

在三维地球仿真领域,提高地形地貌的细节程度以及渲染效率等问题备受关注。文章提出一种基于特征提取的地形增强方法,该方法应用图像领域的相关算法并结合地形处理中的特征提取技术,通过强化山脊、山谷等地形特征的细节,能够以较低的性能需求来更好地提高地形特征的准确度。文章完成的主要工作如下,(1)从理论原理和实际需求两个方面深入研究目前地形仿真中存在的问题和待改进的方向。(2)通过中值滤波等图像领域算法提高地形特征提取的精度,较好地保留了地形地貌细节。(3)通过着色器实时计算法线、地形曲率,相较传统方法简化流程,节省大量存储空间。

In the field of 3D earth simulation,much attention has been paid to improving the detail and rendering efficiency of topography and geomorphology.In this paper,a terrain enhancement method based on feature extraction is proposed,which applies the relevant algorithms in the image field and combines the feature extraction technology in terrain processing.By strengthening the details of terrain features such as ridges and valleys,it can better improve the accuracy of terrain features with lower performance requirements.The main work of this paper is as follows,(1)In this paper,the problems existing in the current terrain simulation and the direction to be improved are deeply studied from two aspects of theoretical principle and practical requirements.(2)Through image domain algorithms such as median filtering,the accuracy of terrain feature extraction is improved,and the details of terrain and geomorphology are well preserved.(3)Through the shader to calculate the normal and terrain curvature in real time,compared with the traditional method,the process is simplified and a lot of storage space is saved.