Research of Target Positioning Technology in 3D Digital Photography

The positioning precision of the coding point center of image and the stability of the rotation pose of the image group are directly related to the accuracy and stability of the 3D coordinates of the subsequent space points. In this paper, a method of global positioning and global matching of the camera rotation posture is proposed. First we propose an improved coding at the center of the image coordinates accurate positioning method. Then, in order to eliminate the influence of the external point of view camera pose matching and analysis of 5-point algorithm and the robust estimation method, an improved view camera attitude calculation method is put forward in this paper. By robust estimation method in mixed model of Gaussian standard difference formula is modified. The experimental results show that the proposed scheme can solve the problem of multiple solutions in 3D reconstruction, which not only improves the flexibility and efficiency of the algorithm, but also ensures the accuracy of the location of the point.