A two-degree-of-freedom adjustment mechanism for human body 3D scanning

A technology for adjusting mechanism and degrees of freedom, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems of unfixed scanning position, many scanning times, low precision, etc., to achieve high precision, easy 3D display and printing, details Show rich effects

Inactive Publication Date: 2019-03-22
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the existing problems of high number of scans, unfixed scanning positions, and low precision, a two-degree-of-freedom adjustment mechanism for 3D human body scanning is proposed. The scanning camera is placed on the adjustment mechanism 200, and a certain number of adjustment mechanisms 200 Arranged in an arc, the human body 201 is located at the center of the arc, such as figure 1 As shown, the distance between the adjustment mechanism 200 and the human body 201 is fixed; by adjusting the scanning cameras, all the scanning cameras point to the human body 201, and the 3D model of the human body can be obtained by taking two shots

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  • A two-degree-of-freedom adjustment mechanism for human body 3D scanning
  • A two-degree-of-freedom adjustment mechanism for human body 3D scanning
  • A two-degree-of-freedom adjustment mechanism for human body 3D scanning

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structures of these implementations All equivalent transformations or substitutions are within the protection scope of the present invention.

[0024] This embodiment provides a two-degree-of-freedom adjustment mechanism for human body 3D scanning, which includes a front frame 1, a rear frame 26, a beam 25, an outer ring frame 2, an inner ring frame 3, a bracket 24, a The unit 100 , the front frame 1 , the rear frame 26 and the four beams 25 constitute the body of the adjustment mechanism, which is encapsulated and covered by the top panel 10 , the side panel 11 and the rear panel 12 . The outer ring frame 2 is installed in the front frame 1 through a first-stage rotating shaft 5, the ...

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Abstract

The present invention relates to a two-degree-of-freedom adjustment mechanism for human body three-dimensional scanning. The two-degree-of-freedom adjustment mechanism includes a front frame, a rear frame, cross beams, an outer ring frame, an inner ring frame, a supporting bracket and linear motion units; the front frame, the rear frame and the cross beams constitute the body of the adjustment mechanism; the inner ring frame is installed in the front frame through a one-stage rotation shaft; the inner ring frame is installed in the outer ring frame through a two-stage rotation shaft; the supporting bracket and the inner ring frame are connected with each other and are fixed together; and a scanning camera is installed on the supporting bracket. The one-stage linear motion unit drives the outer ring frame to rotate around the one-stage rotation shaft through a guide rod mechanism, and the two-stage linear motion unit drives the inner ring frame to rotate around the two-stage rotation shaft, and therefore, the scanning camera can have rotational degrees of freedom in a horizontal direction and a vertical direction in a three-dimensional space. In the human body three-dimensional scanning, a plurality of groups of adjustment mechanisms are arranged to form a circular arc structure, and a human body is located in the center of the circular arc structure, and the angles of the scanning cameras in the horizontal direction and vertical direction are adjusted, so that the camera lenses of the scanning cameras can face the human body, and therefore, images for 3D model splicing can be obtained.

Description

technical field [0001] The invention relates to an adjustment mechanism, in particular to a two-degree-of-freedom adjustment mechanism for 3D scanning of a human body. Background technique [0002] At present, the commonly used method for 3D scanning of the human body is the non-contact measurement method. The non-contact measurement method is subdivided into passive and active methods. The passive method does not require a specific light source and relies entirely on the natural light conditions of the object for scanning. Binocular technology is often used, but the accuracy is low, and only objects with geometric features can be scanned. A 3D scanner is equivalent to a scanning camera. By creating a point cloud of the geometric surface of the object, the point cloud is interpolated into the surface shape of the object. If the scanner can obtain the surface color, it can be further pasted on the reconstructed surface. The scanning range of a 3D scanner is limited. Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 张雷雨李剑锋张春召胡晓洁赵朋波
Owner BEIJING UNIV OF TECH
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