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Face structure light three-dimensional measuring system

A technology of three-dimensional measurement and surface structured light, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problem of single test object in the measurement system

Active Publication Date: 2016-12-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the present invention, the technical problems such as the single test object of the existing measurement system are solved

Method used

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  • Face structure light three-dimensional measuring system
  • Face structure light three-dimensional measuring system
  • Face structure light three-dimensional measuring system

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Embodiment 1

[0060] A surface structured light three-dimensional measurement system is characterized in that: the system includes a digital projection module (DLP) for structured light illumination, an LCD display, a CCD camera for receiving images, a lens, and a beam splitter for folding light paths; the system Based on the two lighting methods of striped projection structured light illumination and striped reflected structured light illumination, and organically combining the two, the high-precision measurement of the three-dimensional surface topography of objects with different roughness is realized. The height value of is used as the initial height value of the iteration, and the gradient value obtained when the stripe reflected structured light is illuminated is used as the iterative correction parameter for compound iteration; among them, for the diffuse reflection object, the iterative correction parameter in the algorithm is directly set to 0, while for the mirror surface Objects, ...

Embodiment 2

[0088] A surface-structured light three-dimensional measurement system, which realizes high-precision measurement of three-dimensional surface topography of objects with different roughnesses, overcomes the shortcomings of single measurement objects in traditional measurement systems, and has high sensitivity, high precision, non-contact, and compact structure. Smaller size and other advantages. Embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the specific steps are as follows:

[0089] Step 1: If figure 1 Build a set of surface structured light three-dimensional measurement system designed by the present invention. In order to realize the measurement of the three-dimensional surface topography of objects with different roughness, the system organically integrates the stripe projection structured light illumination and the stripe reflection structured light illumination; the system...

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Abstract

The invention discloses a face structure light three-dimensional measuring system. According to the system, three-dimensional surface morphology measurement of objects including diffuse reflection objects, mirror-like objects and mirror objects which have the different roughness is achieved by organically integrating stripe projection structure light illumination with stripe reflection structure light illumination together and adopting a compound iteration algorithm, and therefore the limitation that measurement objects of a traditional measuring system are single is overcome. The system is mainly composed of a digital projection module (DLP), an LCD, a lens, a beam splitter and a CCD camera, the structure is compact, the system ambiguity problem existing when the system adopts stripe reflection structure light illumination is eliminated only through one lens, and the three-dimensional surface morphology of the objects with the different roughness can be measured at higher precision. The face structure light three-dimensional measuring system can measure the three-dimensional surface morphology of the objects with the different roughness at high precision.

Description

technical field [0001] The invention relates to the technical field of three-dimensional measurement of surface structured light, in particular to a three-dimensional measurement system of surface structured light. Background technique [0002] Today, with the rapid development of information technology, fast and accurate acquisition of 3D information of objects in real life has become a key issue in the fields of rapid product design, product quality inspection, medical diagnosis, cultural relic identification, clothing design, automatic navigation, and virtual reality systems. Under this background, the research on three-dimensional surface shape measurement technology has great practical value and broad development prospect undoubtedly. Compared with the traditional contact three-dimensional measurement technology, the non-contact optical three-dimensional measurement technology based on photoelectric technology, information optics, and computer technology has the advanta...

Claims

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Application Information

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IPC IPC(8): G01B11/25
CPCG01B11/2513G01B11/254
Inventor 岳慧敏李绒潘志鹏陈红丽刘永
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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