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Back three-dimensional symmetry evaluating device and method

A technology for evaluating devices and symmetry, applied in measuring devices, using optical devices, image analysis, etc., can solve the problems of three-dimensional shape asymmetry, lack of three-dimensional symmetry, difficulty in finding symmetry plane or symmetry line structure, etc., to achieve good results The effect of economic value

Active Publication Date: 2018-06-12
BEIJING UNIV OF TECH
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Problems solved by technology

[0008] The three-dimensional shape detection of the back can indirectly describe the shape of the spine. It is a non-destructive spine detection method. The core of this method is that the shape of the two sides of the spine of a healthy human should be symmetrical. The three-dimensional shape of the two sides is not symmetrical, and because of the three-dimensional deformation caused by scoliosis, the spine is a complex curved structure in space, it is difficult to find a good symmetrical plane or symmetrical line structure, and correspondingly there is no suitable method to describe the three-dimensional symmetry

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  • Back three-dimensional symmetry evaluating device and method

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[0052] The specific implementation of the present invention will be described in detail below in conjunction with specific examples, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be defined more clearly.

[0053] Before the test, let the subject bare his back, enter the dark room, and face the 3D point cloud scanning device with his back. The 3D point cloud scanning device is placed at a distance of 2.5-3 meters from the subject, connected to the computer, and the infrared supplementary light system is turned on.

[0054] During detection, the operator completes A-C work in sequence:

[0055] A: Paste marking points on each spinous process on the back of the subject, and turn on the infrared supplementary light system.

[0056] B: Use the stereo camera measurement system to scan the back 3D point cloud data and the 3D coordinate data of the spine ...

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Abstract

The invention discloses a back three-dimensional symmetry evaluating device and method, and belongs to the field of spinal detection. The device comprises a stereo camera measurement system, a structural light projection system, an infrared light supplementation system, marking points, a darkroom and a computer, wherein the stereo camera measurement system is composed of two or more cameras, and the marking points are attached to back skin. The stereo camera measurement system is used for scanning a human back to obtain back three-dimensional point cloud data. The structural light projection system is used for generating structural light and reducing three-dimensional reconstruction difficulty. The infrared light supplementation system is used for generating infrared light, illuminating the reflecting marking points attached to the back and enhancing the image contrast of the marking points without influencing visible light imaging. The marking point is used for marking and locating aspinal curve. The darkroom is used for shielding external stray light, providing a dark background and protecting the privacy of an examinee. The computer is used for image shooting, three-dimensionalreconstruction, feature computation and other tasks. The device which is suitable for detection all the year round and large-area popularization, low in price and safe in detection is provided.

Description

technical field [0001] The invention relates to a spine detection system, in particular to a back three-dimensional symmetry evaluation device. Background technique [0002] Scoliosis is a more complex form of disease common in modern orthopedic and spinal surgery. Due to the long-term sedentary living habits of modern people facing computers and mobile phones, the incidence of scoliosis has continued to increase in recent years. However, the early physical function has not changed significantly, and it can only be discovered after a preventive census. Early detection and early intervention is the best way to deal with such diseases, but there is currently a lack of reliable spinal function evaluation indicators and equipment. [0003] Existing detection methods and equipment include manual measurement, nuclear magnetic resonance detection, CT detection and X-ray detection. Manual inspection mainly includes relatively subjective observation methods such as observing whethe...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/25G06T7/00
CPCG01B11/2433G01B11/254G06T7/0012G06T2207/10028
Inventor 刘晓民李一鸿刘姣雨石海华于宏
Owner BEIJING UNIV OF TECH
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