倾斜摄影技术支持的实景三维模型制作DOM研究

Study on DOM for Realistic 3D Model Production Supported by Oblique Photography Technology

数字正射影像图被广泛应用于基础测绘和国民经济建设等领域,不断完善高效制作高分辨率数字正射影像的技术是十分有必要的。本文结合生产实践,研究了倾斜摄影技术支持的实景三维模型制作DOM技术,将实景三维模型空三加密成果作为DOM制作所需的空三成果,并通过实景三维模型生成真数字正射影像快速替换、修补高大建筑物等拼接困难区域,实现对DOM的图面修复。该技术相比传统DOM生产方法,无需重复进行大数据量无人机影像空中三角测量,充分利用实景三维模型成果数据,将实景三维模型重建与DOM制作进行有效结合,实现无人机高分辨率DOM的高效制作。

Digital orthophoto map is widely used in the fields of basic surveying and mapping and national economic construction,so it is necessary to continuously improve the technical methods for efficient production of high-resolution DOM.Combining with the production practice,technical method of real scene 3D model making DOM supported by oblique photography technology has been studied.The results of real scene 3D model can be regarded as the required results of DOM production.True digital orthophoto map can be generated by the real scene 3D model to quickly replace and repair the difficult areas as tall buildings,so as to realize the DOM map surface repair.Comparing with traditional DOM production method,this technology does not need to carry out repeated aerial triangulation of UAV images with large data.It will make full use of real scene 3D model results,and effectively combines the reconstruction of real scene 3D model with DOM production to realize the efficient production of high-resolution DOM for UAV.