Accurate 3D Target Positioning in Close Range Photogrammetry with Implicit Image Correction |
| |
| Authors: | Zheng Jiandong Zhang Liyan Du Xiaoyu |
| |
| Institution: | 1. College of Mechanical and Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. College of Electronic and Mechanical Engineering, Nanjing Forestry University, Nanjing 210037, China |
| |
| Abstract: | Accurate three-dimensional (3D) target positioning is of great importance in many industrial applications. Although various methods for reconstructing 3D information from a set of images have been available in the literature, few of them pay enough attention to the indispensable procedures, such as target extraction from images and image correction having strong influences upon the 3D positioning accuracy. This article puts forward a high-precision ellipse center (target point) extraction method and a new image correction approach which has been integrated into the 3D reconstruction pipeline with a concise implicit model to accurately compensates for the image distortion. The methods are applied to a copyright-reserved close range photogrammetric system. Real measuring experiments and industrial applications have evidenced the proposed methods, which can significantly improve the 3D positioning accuracy. |
| |
| Keywords: | close range photogrammetry implicit camera model image correction feature extraction |
| 本文献已被 万方数据 ScienceDirect 等数据库收录！ |
