Spatial-dislocation-based full-view-line laser scanning three-dimensional imaging device and method

Abstract

The invention discloses a spatial-dislocation-based full-view-line laser scanning three-dimensional imaging device and method. The device comprises a one-dimensional moving component, a three-dimensional target, laser emitters, and cameras. The three-dimensional target installed above the one-dimensional moving component is a polyhedral regular prism; and the multiple surfaces of the three-dimensional target are encircled in a circumferential direction. The numbers of the laser emitters and the cameras correspond to the number of the surfaces of the three-dimensional target. The multiple laseremitters are arranged by using the lateral sides aligned at the ridges of the three-dimensional target. A lens is mounted at each camera and is used for surface imaging of the three-dimensional target. According to the invention, the multiple cameras are calibrated at the same time by using the high-precision three-dimensional target; after coordinate conversion, world coordinate systems determined by all cameras are unified into one unique coordinate system of one of the cameras; a synchronous triggering device controls the cameras to collect three-dimensional information of different surfaces of a to-be-scanned object respectively to obtain complete information of the surface of the object, so that a defect that the single line laser scanning device cannot obtain the complete information of the surface of the object is overcome.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional laser measurement, and in particular to a three-dimensional imaging device and method based on spatial dislocation and full-view laser scanning. Background technique [0002] Line laser scanning 3D imaging is a non-contact object surface contour imaging technology based on optical triangulation. The line laser is projected onto the surface of the measured object, and the camera collects the deformed fringes modulated by the height of the object surface. After calculation, the 3D surface contour data is obtained. . This technology has become very common in many fields such as surveying and mapping, reverse engineering of products, mold design, etc., and has also been widely used in the fields of cultural relics protection, architecture, planning, civil engineering, factory transformation, interior design, military analysis, etc. try, apply and explore. Limited by the field of vi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the defects of the prior art, in order to solve the limitation of the field of view in the single-view laser scanning three-dimensional imaging, and the difficult problem of adjusting the laser plane in the multi-view laser scanning three-dimensional imaging, the present invention provides a method based on Spatial misalignment full view line laser scanning three-dimensional imaging device and method

Images