Three-dimensional scanning system and scanning method thereof

Abstract

The invention relates to a three-dimensional scanning system, which is used for obtaining three-dimensional stripe point cloud data of a detected object. The system comprises: a light source, which successively and alternately projects multiple speckle patterns and stripe patterns on the detected object; a left camera and a right camera, which synchronously collect left and right speckle images and left and right stripe images of the detected object; a speckle data and sign point data reconstruction module, which obtains speckle three-dimensional data and sign point three-dimensional data on the basis of the speckle images; a stripe matching module, which conducts back projection onto the left and right stripe images according to the speckle three-dimensional data and the sign point three-dimensional data, and guides matching for stripes of the left and right stripe images; and a three-dimensional reconstruction module, which reconstructs the corresponding matched stripes of the left and right stripe images into three-dimensional stripe point cloud data. The invention also provides a scanning method of the three-dimensional scanning system.

Description

technical field [0001] The invention relates to a three-dimensional scanning system and a scanning method, in particular to a three-dimensional digital imaging sensor for a hand-held multi-stripe three-dimensional scanning system, a three-dimensional scanning system and a scanning method. Background technique [0002] 3D digital technology is an emerging interdisciplinary field of active research in the world in recent years, and has been widely used in many fields such as reverse engineering, cultural relic protection, industrial inspection and virtual reality. Hand-held portable 3D scanners are widely used in the field of 3D scanning due to their convenience and flexibility. The principle of existing handheld 3D scanners is mainly based on the active stereoscopic vision method of structured light. There are many modes of structured light, such as infrared laser speckle, DLP (Digital Light Processing) projected speckle, and simulated laser projected by DLP. Stripes, laser ...

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Problems solved by technology

[0011] In view of this, it is necessary to provide a hand-held multi-stripe 3D scanning system and its scanning method to solve the problem that the existing hand-held 3D scanning system cannot take into account high scanning efficiency and high scanning data accuracy, and at the same time, no marker points are required during the scanning process Splicing

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