3D Coordinate Measurement Method Based on Line Structured Light Scanning

A three-dimensional coordinate, line structured light technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems of increasing the manufacturing cost and large volume of vision sensors, achieving low cost, simple control and processing system, and improved measurement accuracy. Effect
CN105423913BActive Publication Date: 2018-01-09GUANGDONG UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Publication Date
2018-01-09

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Abstract

The present invention discloses a three-dimensional coordinate measurement method based on line structure light scanning. The method comprises the steps of (S1) a line laser emits laser, and a laser line is formed on a measured object, (S2) the image information corresponding to the laser line formed on the measured object, (S3) a control processing system calculates a corresponding three-dimensional coordinate according to the image information of the (S2) and controls the object to move for a particular distance, (S4) the steps (S2) and (S3) are repeated, and the complete three-dimensional coordinate of the measured object is obtained. By using the method of the invention, the laser line formed on the measured object by the line laser is reflected for many times through an optical system, the image information of the laser line can be obtained from different positions with one camera, the block problem in a single-camera visual sensor is solved, the effect of a double-camera visual sensor is achieved, the cost is low, and a control processing system is simple.
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Description

technical field

[0001] The invention belongs to the technical field of line structured light scanning measurement, in particular a three-dimensional coordinate measurement method based on line structured light scanning. Background technique

[0002] The line-structured light scanning measurement device is a laser that reflects a light plane to the measured object, and the light plane intersects with the surface of the measured object to form a laser line. The laser line is a plane curve. The shape of the laser line is related to the geometric shape of the surface of the measured object. The camera collects the image information of the laser line and applies the machine vision related algorithm to obtain the three-dimensional coordinates of the points on the laser line; with a certain The mechanical (scanning) device can obtain the complete three-dimensional information of the measured object. The accuracy of line structured light scanning measurement is moderate, and the st...

Claims

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