Array type parallel laser projection three-dimensional scanning method

A technology of laser projection and three-dimensional scanning, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of discrete projection pixels, affecting the accuracy of three-dimensional scanning, nonlinearity of light intensity, etc.
CN107063129AActive Publication Date: 2017-08-18XIAN CHISHINE OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN CHISHINE OPTOELECTRONICS TECH CO LTD
Publication Date
2017-08-18

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Abstract

The invention discloses an array type parallel laser projection three-dimensional scanning method. The array type parallel laser projection three-dimensional scanning method comprises steps that a laser micro-vibration mirror projection device used for projecting line lasers in different directions and a plurality of array type cameras used for data acquisition are provided; laser cutter separation of each acquired image in different directions is carried out, and the laser cutter centers of the laser cutters in various directions are respectively extracted, and according to a triangle relation among the projection device and the cameras, an object surface three-dimensional coordinate of a line laser position is acquired; the projection device is used to move the line laser on the object surface by one pixel each time, and the above mentioned process of extracting the object three-dimensional coordinate on the laser cutter position is repeated until the three-dimensional coordinate of the whole object surface is acquired by the laser cutter. The laser projection device adopts MEMS scanning vibration mirror laser, and compared with a digital light and physical grating technology, field depth is large, scanning speed is fast, a size is small, and scanning precision is high; and at the same time, the system is used to distribute the cameras in an array, and then the sensitivity to complicated step edge measurement is provided, and then the non-contact, high-speed, and object edge step high precision measurement of the object is realized.
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Description

technical field

[0001] The invention belongs to the field of optical three-dimensional measurement. Multiple cameras are distributed in an array and laser projection devices are combined into an array parallel laser projection three-dimensional scanning system. The system is sensitive to complex step edge measurement and can realize non-contact, high-speed and object detection of objects Edge steps are measured with high precision. Background technique

[0002] Due to the advantages of non-contact, high precision and high speed, optical three-dimensional measurement has emerged in industries such as industrial manufacturing, animation special effects production, game entertainment and medicine, showing huge technological advancement and strong vitality, and its application is in the ascendant , and manufacturers are gradually developing products with better performance, and a large-scale industry has initially formed.

[0003] There are two types of optical three-dimensiona...

Claims

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