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Portable grating projection three-dimensional surface-shape measurement system and method

A grating projection, three-dimensional surface technology, applied in the field of measurement systems, can solve the problems of low measurement accuracy, slow measurement speed, large volume, etc., and achieve the effect of small overall volume and convenient measurement work.

Inactive Publication Date: 2015-11-11
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

At present, many shape measurements adopt contact measurement, which not only has low measurement accuracy, but may cause damage to the measured object, and it is basically impossible to measure objects that are not suitable for contact.
In addition, this type of measurement device is generally large in size and slow in measurement speed, which is not suitable for portable high-speed measurement environments.

Method used

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  • Portable grating projection three-dimensional surface-shape measurement system and method

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Embodiment Construction

[0030] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] refer to figure 1 , a portable grating projection three-dimensional surface shape measurement system, using IntelAtom series processors as the core embedded board as the development platform, using Windows8 as the development system, through the grating projection method, using C++ language, Qt and OpenCV library, by writing digital The grating projection module, image capture module, phase calculation module, phase unwrapping module, three-dimensional shape reconstruction module and parameter setting module realize a non-contact high-speed three-dimensional surface shape measurement system with high precision.

[0032] The digital raster projection module is used to generate a grating fringe image. The grating modulation frequency and phase can be adjusted, so that the fringe image is projected onto...

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Abstract

The invention discloses a portable grating projection three-dimensional surface-shape measurement system and a method. The system comprises an embedded board type development platform and an Intel Atom-series processor is adopted as the core of the embedded board type development platform. A Windows 8 system is adopted as the development system of the system. Based on the grating projection method, a digital grating projection module, an image capturing module, a phase calculating module, a phase unwrapping module, a three-dimensional topography re-establishing module and a parameter setting module are arranged to form a high-precision and non-contact type high-speed three-dimensional surface-shape measurement system by utilizing the C++ language, the Qt database and the Open CV database. The non-contact type portable three-dimensional surface-shape measurement system is high in precision and high in speed.

Description

technical field [0001] The invention relates to a measurement system and method, in particular to a portable grating projection three-dimensional surface shape measurement system and method. Background technique [0002] With the rapid development of computer technology, optical measurement technology and digital image processing technology, three-dimensional shape measurement methods emerge in endlessly. Among the many measurement methods, obtaining the three-dimensional information of the measured object through optical technology has become a hot technology. The traditional contact three-dimensional measurement technology needs to touch the measured object through a mechanical probe, and obtain precise coordinate information on the surface of the measured object through the contact point. [0003] The contact three-dimensional measurement technology has high measurement accuracy and has no requirements for the color of the measured object. However, the measurement proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 马峻侯启家焦凤敏吴军王新强徐翠锋黄新
Owner GUILIN UNIV OF ELECTRONIC TECH
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