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Adaptive De Bruijn color structured light coding method

An encoding method and structured light technology, applied in the field of adaptive DeBruijn color structured light encoding, can solve the problems of color stripe color information error, coding stripe interference, and high three-dimensional reconstruction error rate, and achieve error reduction, strong anti-interference, Identify the effect with high accuracy

Active Publication Date: 2017-12-26
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

When faced with a colored object, the intrinsic color information of the object will interfere with the color of the coded stripes, making the color information of the colored stripes extracted during the decoding process wrong, resulting in a high error rate of 3D reconstruction

Method used

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  • Adaptive De Bruijn color structured light coding method

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention will be further described: as figure 1 As shown, the self-adaptive De Bruijn color structured light encoding method adopts a camera 1, a projector 2, a support adjustment mechanism 3, a computer 4, and an ideal projection plane 5; the feature is that the camera 1 and the projector 2 are fixed to the support on the adjustment mechanism 3, and can manually adjust the azimuth and pitch angle of the support adjustment mechanism 3, and then adjust the shooting angle of the camera 1 and the projection angle of the projector 2, so as to ensure that the camera 1 can capture all the images projected by the projector 2 Image; camera 1 and projector 2 are connected to computer 4 through cables; the specific steps are as follows:

[0031] Step 1. In the computer 4, use the De Bruijn pseudo-random sequence with random characteristics and determinism to generate a 7-element 3-level De Bruijn sequence color structur...

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Abstract

The invention relates to an adaptive De Bruijn color structured light coding method which employs a camera, a projector, a support adjusting mechanism, a computer and an ideal projection plane. The method is characterized by fixing the camera and the projector on the support adjusting mechanism, manually adjusting the orientation and the angle in pitching direction of the support adjusting mechanism, further adjusting the shooting angle of the camera and the projection angle of the projector, ensuring that the camera can capture all images projected by the projector, and the camera and the projector being connected to the computer through cables. A De Bruijn coding method is used to generate a color structured light stripe sequence, a camera is used to capture the intrinsic color information of an object to be measured, and then the color structured light stripe sequence is adaptively adjusted according to the interference degree of the intrinsic color of the object to be measured by color stripes. The method not only improves the anti-interference capability of coding images, but also expands the universality of the three-dimensional reconstruction based on color structure light.

Description

technical field [0001] The invention relates to an adaptive De Bruijn color structured light encoding method, which belongs to the technical field of computer vision. Background technique [0002] Structured light 3D reconstruction is an active optical reconstruction technology. Its basic principle is to project a light point, light bar or light surface structure image on the surface of the object to be measured by a structured light projector, and capture it by an image sensor (such as a camera). The modulated image uses the principle of triangulation to calculate the three-dimensional information of the object. Structured light 3D reconstruction has the advantages of simple calculation, low price, easy installation and maintenance, etc. It is widely used in reverse engineering and 3D printing. Since gray-scale fringe coding and time fringe coding need to use multiple coded images for 3D information solution, the efficiency of 3D reconstruction is low. In recent years, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00G06T15/50G06T7/00
CPCG06T11/003G06T15/50G06T2211/416G06T2215/06
Inventor 杨帆韩成白宝兴张超杨华民蒋振刚丁莹权巍李华吴金吉
Owner CHANGCHUN UNIV OF SCI & TECH
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