Automatic positioning and proportion determining method for proportion of human face

A three-chamber, five-eye, automatic positioning technology, applied in the field of facial structure analysis, can solve cumbersome and time-consuming problems, and achieve the effects of high accuracy, intuitive positioning and calculation results

Inactive Publication Date: 2014-09-03
XIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for automatic positioning and proportion determination of the three courts and five eyes of a human face,

Method used

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  • Automatic positioning and proportion determining method for proportion of human face
  • Automatic positioning and proportion determining method for proportion of human face
  • Automatic positioning and proportion determining method for proportion of human face

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The method for automatic positioning and proportion determination of three courts and five eyes of a human face according to the present invention is specifically implemented according to the following steps:

[0019] Step 1. Detect faces and extract complete faces

[0020] For a frontal high-definition image of a face captured by a camera or directly opened, use the face classifier of the AdaBoost algorithm for face detection. The detected face area is recorded as FaceRO, and its upper left corner point is defined as LeftTopPoint face , the abscissa of the point is LeftTopPoint face · x, ordinate is LeftTopPoint face .y, with a width of w face , the height is h face , the abscissa of the upper left corner point of the complete face area FaceROI_Whole is calculated by the formula (1) from the area FaceROI as LeftTopPoint face_Whol...

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Abstract

The invention discloses an automatic positioning and proportion determining method for proportion of a human face. A complete human face is automatically detected and extracted from a high-definition human face image. Partial characteristics are automatically detected and characteristic points are positioned. The detected partial characteristics comprise a left eye, a right eye, a left eyebrow, a right eyebrow, a nose, a mouth, a forehead hair line area, a chin area and a face width area. The positioned characteristic points comprise a left eye inner canthus point, a left eye outer canthus point, a right eye inner canthus point, a right eye outer canthus point, a left eyebrow point, a right eyebrow point, a nose lower point, a chin point, a forehead hair line point, a left eye outer canthus outside hair line point and a right eye outer canthus outside hair line point. Finally, pixel spaces and proportion relationships among the proportion are automatically calculated according to the coordinate positions of the characteristic points in the human face image. The method according to the invention has advantages of: visible positioning result, visible calculating result, and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of face structure analysis, and relates to a method for automatic positioning and proportion determination of three courts and five eyes of a human face. Background technique [0002] The three courts and five eyes of the human face are a description of the structural characteristics of the human face. The three courts refer to the line connecting the hairline in the middle of the forehead to the brow point, the line connecting the brow point to the lower edge of the nose, and the lower edge of the nose to the tip of the chin. The five eyes refer to the five points from the outer corner of the left eye to the edge of the left hairline, between the inner and outer corners of the left eye, between the inner corners of the left and right eyes, between the inner and outer corners of the right eye, and from the outer corner of the right eye to the edge of the right hairline. parts. [0003] The proportion relati...

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Application Information

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IPC IPC(8): G06T7/00G06K9/46
Inventor 胡涛冯玉娜王亚丹范彩霞景翠宁
Owner XIAN UNIV OF TECH
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