The advantages of image control post-processing to build high-precision 3D real model

Aug 17, 2023

Image control post-processing modeling method oblique photography 3D model construction method: First, image control points are directly selected on the model without image control, the scene is intuitive and comprehensive, and image control points can be scientifically and reasonably laid out; second, identification points with obvious ground characteristics are directly selected, and local materials are available according to local conditions, without making and laying image control point marks, which can effectively save the cost of laying and maintaining image control points. And improve work efficiency.

It is feasible to use the image control post-processing method to construct the 3D model of oblique photography. In each square kilometer measurement area, 20 feature points are selected as control points on the high-precision 3D real scene model with the layout of corners, edges and middle, and the accuracy of the image control post-processing 3D model can reach the optimal.

When selecting image control points on a three-dimensional model without image control points, the basic requirements of image control points are as follows: the point features are obvious and easy to identify; Change angular, convenient puncture point; Widely distributed, convenient for scientific distribution of the whole area. Therefore, the image control post-processing modeling method has a good universality in the regular updating of 3D real scene models in urban and rural areas.