Three-dimensional information detection method based on two-line laser

A technology of three-dimensional information and detection methods, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of small application range of single-line laser detection, low precision of single-line laser, and limited operation methods, etc., and achieve light weight and wide application range Wide, easy-to-operate effects
CN102297658AInactive Publication Date: 2011-12-28NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2011-12-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a three-dimensional information detection method based on dual laser and belongs to the technical field of three-dimensional measurement. The method comprises the following steps of: adopting two lasers, and respectively solving laser plane equations of the first laser and the second laser; collecting an object image containing dual laser by utilizing a camera in the eventof detecting the three-dimensional information of an object, and solving a centre line of each laser thick line; and rebuilding three-dimensional data by utilizing inner parameters of the camera and the laser plane equations of both lasers. Compared with the single-laser measurement method, because of large information amount, the method disclosed by the invention specifically has higher stability, reliability and accuracy; and simultaneously, the operation requirements are simple, thus the method has the important application in detecting the surface three-dimensional information of objects.
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Description

technical field

[0001] The invention relates to a two-line laser-based three-dimensional information detection method, which belongs to the technical field of machine vision detection. Background technique

[0002] In modern manufacturing, the detection of three-dimensional information is essential. At present, most of the existing three-dimensional detection devices are manually detected, and the efficiency is relatively low; in addition, in some precision instrument manufacturing industries (such as automobiles and aircrafts), contact measuring instruments are not easy to install, or due to contact with the surface of the measured object There will be scratches, etc., so the optical-based non-contact measurement technology has been greatly developed. This technology has been widely used in product design and manufacturing, quality inspection and control, machine vision and other fields.

[0003] Most of the existing optical-based three-dimensional detection devices are in...

Claims

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