Three-dimensional measurement method suitable for bright surface

A three-dimensional measurement and bright technology, applied in the field of optical measurement, can solve the problems of coating thickness and uniformity measurement error, spraying and cleaning coating to reduce measurement efficiency, increase the complexity of hardware system, etc. Intervention, low cost effect
CN106091986AActive Publication Date: 2016-11-09SHAOGUAN COLLEGE +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHAOGUAN COLLEGE
Publication Date
2016-11-09

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Abstract

The invention discloses a three-dimensional measurement method suitable for a bright surface. According to images synthesized through uniform-light patterns and coordinate mapping, an optimal projection gray value of each pixel point in a stripe pattern is adaptively adjusted, when the method is used for measuring three-dimensional morphology comprising large-scope reflectivity change, for a bright area with high reflectivity, image saturation can be avoided, for a dark area with low reflectivity, a quite high signal-to-noise ration can be maintained, finally, clear stripe pattern images can be obtained, and the three-dimensional morphology of a measured object can be accurately restored.
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Description

technical field

[0001] The invention relates to an optical measurement method, in particular to a structured light three-dimensional measurement method. Background technique

[0002] The structured light method is an active optical measurement method. Its basic principle is to project a controllable light point, light bar or light surface on the surface of the measured object by a structured light projector, and collect images by an image sensor (such as a camera). Through the geometric relationship of the system, the three-dimensional coordinates of the object are calculated by using the triangulation principle. The structured light measurement method is widely used in product quality inspection, reverse engineering (digitization of complex free-form surfaces), object recognition, 3D map construction, biomedicine and cultural relics protection due to its advantages of non-contact, full-field scanning, high precision, and fast measurement speed field.

[0003] However, whe...

Claims

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