Ultrahigh speed real-time three-dimensional measuring device and method

A real-time three-dimensional, visual measurement technology, applied in the field of visual measurement, can solve problems such as inability to realize three-dimensional measurement, and achieve the effect of high update rate and high image data volume

Active Publication Date: 2009-12-16
BEIHANG UNIV
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Problems solved by technology

However, the laser displacement sensor can only obtain the displacement of the measured object along the direction of the laser beam, which belongs to one-dimensional measurement, that is to say, the laser displacement sensor can only realize one-dimensional measurement at present, but not three-dimensional measurement.

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  • Ultrahigh speed real-time three-dimensional measuring device and method

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Embodiment Construction

[0028] The basic idea of ​​the present invention is: use the laser displacement sensor, the area array camera and the planar target to obtain the three-dimensional measurement reference point and the space linear equation, based on the obtained measurement reference point and the space linear equation, according to the measured displacement of the measured object, calculate The coordinates of the measured light points in different positions of the measured object in the global coordinate system, so as to complete the ultra-high-speed real-time three-dimensional visual measurement of the measured object.

[0029] The ultra-high-speed real-time three-dimensional visual measurement device of the present invention includes: an area array camera, one or more laser displacement sensors; wherein,

[0030] An area array camera is used to take target images and obtain the transformation relationship between the target coordinate system and the camera coordinate system;

[0031] The las...

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Abstract

The invention discloses an ultrahigh speed real-time three-dimensional measuring device and an ultrahigh speed real-time three-dimensional measuring method. The measuring device comprises a matrix camera, and one or more laser displacement sensors; and the measuring method comprises the following steps: obtaining a three-dimensional datum point and a spacial linear equation by the laser displacement sensors, the matrix camera and a planar pattern; and on the basis of the obtained datum point and spacial linear equation, according to measured displacement of a measured object, calculating coordinates of measured light spots of the measured object positioned at different positions in global coordinates so as to complete the ultrahigh speed real-time three-dimensional vision measurement on the measured object.

Description

technical field [0001] The invention relates to visual measurement technology, in particular to an ultra-high-speed real-time three-dimensional visual measurement device and method. Background technique [0002] Structured light vision is one of the high-tech technologies with development potential in the field of precision testing technology, and has become one of the most effective ways to measure three-dimensional information of objects. Structured light vision projects a laser beam with high brightness and a certain structural mode to the measured object, thereby forming a deformed light strip feature modulated by the surface three-dimensional information on the surface of the measured object, and then using an area array camera to shoot the modulated Deform the light strip features to form a visual image containing three-dimensional information on the surface of the measured object. By processing, analyzing and calculating various feature information in the visual imag...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/03G01B11/25
Inventor 张广军孙军华刘震魏振忠刘谦哲
Owner BEIHANG UNIV
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