Method and device for determining inclination angle of front face

A technology of oblique angle and frontal face, which is applied in the field of face recognition and can solve the problem of inability to obtain an effective 2D reference plane.

Inactive Publication Date: 2018-11-30
BEIJING FACE SPACE TECH CO LTD
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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a method and device for determining the tilt angle of the frontal face, so as to alleviate the technical problem that an effective 2D reference plane cannot be obtained

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  • Method and device for determining inclination angle of front face
  • Method and device for determining inclination angle of front face
  • Method and device for determining inclination angle of front face

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045]At present, with the continuous development of 3D scanning technology, 3D face images are applied in various fields, such as identification, medical treatment, games, cosmetic surgery and so on. When performing data processing on the scanned 3D face image, one of the methods is to measure the data by mapping the 3D image to a 2D coordinate system. Due to the same point in the ...

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Abstract

The invention provides a method and a device for determining the inclination angle of a front face and relates to the technical field of face recognition technology. The method comprises the steps that a three-dimensional face image of a target object is acquired, and a right-eye inner canthus point, a left-eye inner canthus point, a lower-right eyelid margin bottom point and a right labial anglepoint in the three-dimensional face image are determined; and based on a plane formed by a first reference line and a second reference line, the inclination angle of the front face is determined, wherein the first reference line is a connection line of the right-eye inner canthus point and the left-eye inner canthus point, and the second reference line is a connection line of the lower-right eyelid margin bottom point and the right labial angle point. Through the method and the device, the 2D reference plane can be effectively acquired, and therefore facial part data such as the length-to-width ratio, trisection length and part forms of the face can be accurately measured finally.

Description

technical field [0001] The invention relates to the technical field of face recognition, in particular to a method and a device for determining the tilt angle of a frontal face. Background technique [0002] At present, the reference plane of the face is selected in medicine for the location of the feature points of the human face bones through manual methods such as X-ray pictures, CT pictures or hand touch. The 3D scanned face image shows the shape of the surface of the face, and the bone feature points are covered by the epidermis, so it is impossible to locate the bone feature points. Therefore, it is impossible to obtain an effective 2D reference plane, which eventually leads to the inability to accurately measure face part data such as face aspect ratio, triangular length, and part shape. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a method and device for determining the tilt angle of the frontal face, so as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/165G06V40/171
Inventor 张红松郑冬青张亮苏庆瑞张靖邦
Owner BEIJING FACE SPACE TECH CO LTD
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