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Color three-dimensional profile measuring device and method based on Dammann grating

A 3D profile, Dammam grating technology, used in the field of computer vision

Active Publication Date: 2015-07-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The former method only needs to keep the infrared structured light constantly bright, and theoretically the highest scanning frame rate can reach the highest frame rate of the camera, but it needs to add an additional color digital camera specially responsible for taking color images; the latter method is not An additional color camera is required, but a strobe circuit module needs to be added to control the camera and projection unit synchronously, and two frames of images are required to obtain a frame of color 3D point cloud, so theoretically the maximum scanning frame rate can only reach the maximum frame rate of the camera half

Method used

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  • Color three-dimensional profile measuring device and method based on Dammann grating
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  • Color three-dimensional profile measuring device and method based on Dammann grating

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the scope of application and protection of the present invention should not be limited by this. The present invention is used to measure the color 3D contour information of an object. In addition to 3D modeling, the color 3D model obtained by the present invention can be used in application fields such as target recognition, target tracking, motion capture, and human-computer interaction.

[0055] refer to figure 1 , figure 1 is a schematic diagram of the device of the present invention. As can be seen from the figure, the device of the present invention consists of a laser projection unit 1, a left black and white digital camera 2A, a right black and white digital camera 2B, a color digital camera 3, a camera control module 5, an image processing module 6, a data storage module 7, and a data transmission module 8 , a narrow bandpass filter 9 and an...

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Abstract

The invention discloses a color three-dimensional profile measuring device and method based on a Dammann grating. According to the color three-dimensional profile measuring device, the Dammann grating is adopted as a core optical component, a laser beam emitted by an infrared laser is split into a regular laser spot array, and the measurement is performed by using the laser spot array as a protection structure. Two black and white digital cameras with narrow band-pass filters are used for shooting a laser dot matrix to reconstruct a three-dimensional profile of an object to be tested, and one color digital camera with an infrared cut-off filter is used for recording true color information of the object to be tested. The color three-dimensional profile measuring device has the advantages of small volume, low cost, high measurement speed and the like, and is expected to be widely applied to fields such as three-dimensional modeling, object identification, object tracking, action capturing, and human-computer interaction.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to a device and method for measuring the three-dimensional outline and color information of an object. Background technique [0002] With the popularity of 3D printing technology, the demand for civilian-grade 3D profile scanners is increasing. Traditional optical three-dimensional profilometry methods, such as fringe projection method, light knife scanning method, coded structured light method, etc., have been widely used in industrial production processes. However, for home entertainment or daily office, traditional optical three-dimensional profilometry technology is usually A projector is required, or a precise electromechanical positioning device is required, which is not conducive to the miniaturization and cost reduction of the scanner. Diffractive optical element (DOE) is widely used in shaping laser beams, and can also be used to generate structured light required for 3D pro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 韦盛斌周常河王少卿刘昆范鑫
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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