Photogrammetric 3D measurement method applying to automobile panel

Abstract

Since the automobile panel possesses the features such as complex shapes, the more high requirements for the appearance surface quality, and the more accurate mechanical model for CAE simulation, a new method photogrammetric 3D measurement technology applying to automobile panel is presented. The method is constituted of digital close-range industrial photogrammetry and computer binocular vision technology, which can measure automobile panel quickly and precisely. Photogrammetry measurement software can figure out un-coded points and encoded points fixed on the surface of automobile panel, the complete un-coded points coordinate can take a solid basement for the fusion of much pieces point clouds. 3D dense point cloud optical measure software can perform point clouds matching automatically based on the complete un-coded points derived from photogrammetry measurement software. 3D data of the target surface can be acquired precisely by means of this approach. A car door is taken for example to conduct engineering application, it is verified that this approach possesses better accuracy and the feature of automobile panel is obtained clearly.