一种提高三维模型精度的方法

A method to improve the accuracy of 3D model

高精度三维模型是获取高质量测绘成果数据的保证。目前大多数建模软件都是基于计算机视觉进行建模的,模型精度特别是高程精度满足不了测绘项目的需求。本文在分析ContextCapture软件和Inpho软件的优势及不足的基础上,提出一种提高三维模型精度的方法,并开发空三数据转换工具进行空三文件转换,最后通过试验数据验证本文方法的可行性。试验结果表明,采用本文方法建立的三维模型比直接利用ContextCapture软件建立的三维模型的精度高,尤其高程精度有了大幅提高。

High precision 3D model is the guarantee of obtaining high quality surveying and mapping data.At present,most of the modeling software is based on computer vision,and the accuracy of the model,especially the accuracy of elevation,can not meet the demand of surveying and mapping projects.Based on the analysis of the advantages and disadvantages of ContextCapture and Inpho software,this paper proposes a method to improve the accuracy of 3D model,writes a triangulation data conversion software,and verifies the feasibility of the proposed method by experimental data.The experimental results show that the 3D model established by using the method in this paper is more accurate than that established by using ContextCapture software directly,especially the elevation accuracy is greatly improved.