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Online three-dimensional detection device based on RGB structured light

A technology of three-dimensional detection and structured light, which is applied in the field of image recognition and defect detection, can solve the problems of high cost, poor sampling effect, affecting the speed and reliability of detection, etc., to reduce costs, ensure projection quality, and reduce a series of The effect of the sampling problem

Inactive Publication Date: 2015-04-29
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Three-dimensional detection has also begun to enter the initial application stage. Most of the light sources are realized by projecting black and white gratings or color gratings with high-precision projectors. good
In addition, in the reconstruction of 3D color images, edge detection and feature matching algorithms of most related systems, most of the algorithms are processed separately according to the three colors of RGB, and the correlation between image color information is artificially stripped. Affected the speed and reliability of detection

Method used

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  • Online three-dimensional detection device based on RGB structured light
  • Online three-dimensional detection device based on RGB structured light
  • Online three-dimensional detection device based on RGB structured light

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Embodiment

[0023] Such as figure 1 As shown, an on-line three-dimensional detection device based on RGB structured light includes an object to be measured, a working platform, an RGB structured light source 3, a shooting module and an image processing module, the shooting module is connected to the image processing module, and the to-be-measured The object 9 is placed on the working platform 10, the RGB structured light source 3 includes a plurality of LED light source modules, and each LED light source module sequentially includes an LED chip array 4, an optical path collimation part 5, an optical filter 6, and a diffraction grating 7 And focusing lens 8, described LED chip array 4 comprises a plurality of LED chip light sources and spotlight bowl 13, the light source in the described each LED chip array is all the same color light source, and described LED chip light source is red light LED, One of green LED or blue LED, the RGB structured light source 3 includes any combination of two...

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Abstract

The invention discloses an online three-dimensional detection device based on RGB structured light. The online three-dimensional detection device comprises a to-be-detected object, an RGB structured light source, a shooting module and an image processing module, wherein the RGB structured light source comprises multiple LED light source modules; each LED light source module sequentially comprises an LED chip array, a light path alignment part, a color filter, a diffraction grating and a focusing lens; and the shooting module is connected with the image processing module. According to the detection device disclosed by the invention, a series of sampling problems caused by asynchrony between projecting and shooting in the image acquisition process can be reduced.

Description

technical field [0001] The invention relates to the field of image recognition and defect detection, in particular to an online three-dimensional detection device based on RGB structured light. Background technique [0002] At present, the detection in industrial applications mostly adopts two-dimensional detection, and the light source used is mostly point laser or line laser light source. Three-dimensional detection has also begun to enter the initial application stage. Most of the light sources are realized by projecting black and white gratings or color gratings with high-precision projectors. good. In addition, in the reconstruction of 3D color images, edge detection and feature matching algorithms of most related systems, most of the algorithms are processed separately according to the three colors of RGB, and the correlation between image color information is artificially stripped. Affected the detection speed and reliability. Contents of the invention [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
Inventor 杜娟洪大江胡跃明
Owner SOUTH CHINA UNIV OF TECH
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