Laser scanning three-dimensional imaging device and method based on spatial dislocation

Abstract

The invention discloses a laser scanning three-dimensional imaging device and method based on spatial misalignment, including a one-dimensional moving part, a three-dimensional target, a laser emitter and a camera. The three-dimensional target is installed above the one-dimensional moving part, and the three-dimensional target is a multi-faceted regular prism. Several faces of the three-dimensional target surround each other along the circumferential direction; the number of laser emitters and cameras corresponds to the number of faces of the three-dimensional target, and several laser emitters are set at the edge of the three-dimensional target laterally; A lens is installed, and the lens is used to image the surface of the solid target. The present invention calibrates multiple cameras at the same time by using high-precision three-dimensional targets. According to the coordinate conversion, the world coordinate system determined by each camera is transferred to the unique coordinate system of one of the cameras, and the synchronous trigger device controls the cameras to collect different objects to be scanned. The three-dimensional information of the surface can be obtained to obtain the complete information of the object surface, which solves the disadvantage that a single line laser scanning device cannot obtain the complete information of the object surface.

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 for 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...

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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

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