Handheld type large-scale three-dimensional measurement scanner system simultaneously having photography measurement and three-dimensional scanning functions

Abstract

The invention discloses a handheld type large-scale three-dimensional measurement scanner system simultaneously having photography measurement and three-dimensional scanning functions. The handheld type large-scale three-dimensional measurement scanner system comprises two cameras at fixed positions, at least one pattern projector, a photography measurement module and a three-dimensional scanning module, wherein at least one of the two cameras is a multiplex camera used for both photography measurement and three-dimensional scanning; the photography measurement module is used for performing global photography measurement on a measured object through the multiplex camera and obtaining three-dimensional coordinates of a mark point on the surface of the object; the three-dimensional scanning module is used for performing three-dimensional measurement on the measured object through the two cameras and the pattern projector according to the obtained mark point serving as global positioning information of the measured object and obtaining three-dimensional contour data of the surface of the object. The handheld type large-scale three-dimensional measurement scanner system has the global photography measurement and three-dimensional scanning functions and is high in hardware integration degree, easy and convenient to operate and use, and high in cost-to-performance ratio.

Description

technical field [0001] The invention belongs to three-dimensional measurement and scanning equipment, in particular to a handheld three-dimensional measurement scanner system. Background technique [0002] In recent years, with the continuous increase of computer hardware performance and the continuous improvement of communication speed, 3D scanning technology has been iteratively updated, from contact type to fixed camera type to handheld type. Handheld 3D scanning technology is mainly developed on the basis of fixed scanning technology. The main feature of handheld 3D scanners different from fixed 3D scanning is that the relative position between the scanner and the object to be scanned can change dynamically and arbitrarily, that is, scanning The instrument needs to know the relative spatial position of itself and the object to be scanned in real time, and then use the principle of stereo vision to actively or passively obtain the three-dimensional contour data of the sur...

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Problems solved by technology

[0005] In order to overcome the disadvantages of the separation of global photogrammetry and 3D scanning and the complicated measurement process of the existing 3D scanning method, the present invention provides a system with both global photogrammetry and 3D scanning functions, high hardware integration, easy operation and high cost performance. The hand-held large-scale 3D measurement scanner system realizes coherent photogrammetry and 3D scanning of large workpieces, and finally obtains 3D contour data that can not only guarantee accuracy but also realize large format

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