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Human head and face digital picture measurement and analysis method and device based on iris diameter

A technology of measurement and analysis, head and face, applied in the field of measurement and analysis, it can solve problems such as inability to perform quantitative measurement

Inactive Publication Date: 2017-01-04
广州比特软件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, in order to solve the technical problem that quantitative measurement cannot be carried out when there is no ruler on the digital photo in the prior art, the present invention proposes a method and device for measuring and analyzing digital photos of the head and face of the human body based on the diameter of the iris. As a conversion scale, the pixel value of the digital photo is converted into the actual length value through the average value of the iris diameter of different races, so as to achieve a more accurate measurement of the human head and face based on digital photos

Method used

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  • Human head and face digital picture measurement and analysis method and device based on iris diameter
  • Human head and face digital picture measurement and analysis method and device based on iris diameter
  • Human head and face digital picture measurement and analysis method and device based on iris diameter

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Embodiment 1

[0028] Such as figure 1 As shown, a method for measuring and analyzing digital photos of the head and face of a human body based on the diameter of the iris comprises the following steps:

[0029] S1. Obtain a digital photo to ensure that the iris of the subject can be clearly seen in the digital photo;

[0030] Obtaining digital photos: methods of obtaining digital photos include taking digital photos and importing digital photos;

[0031] When taking digital photos, select the best focal length and object distance according to the lens parameters, and take digital photos of the human head and face. The eyes of the person being photographed are normally open, and the camera is headed up to ensure that the iris of the person being photographed can be clearly seen in the digital photo;

[0032] S2. Face recognition is performed on the digital photo to identify at least one pupil point and iris edge point or one left and right iris edge point respectively;

[0033] Iris recogn...

Embodiment 2

[0043] Such as figure 2 As shown, a device for measuring and analyzing digital photos of the head and face of a human body based on the diameter of the iris includes sequentially connected digital photo acquisition equipment, an interface unit, an operation and storage unit, and the operation and storage unit includes sequentially connected face recognition modules, Data conversion storage module, measurement and analysis module;

[0044] The digital photo acquisition device is used to acquire digital photos;

[0045] The interface unit is used to provide an interface to import digital photos into the operation and storage unit;

[0046] The face recognition module is used to identify at least one pupil point and iris edge point or each left and right iris edge point through face recognition of digital photos;

[0047] The data conversion storage module is used to calculate the iris diameter in units of pixels and then calculate the conversion coefficient and store it;

[...

Embodiment 3

[0050] Such as image 3 As shown, a device for measuring and analyzing digital photos of the head and face of a human body based on the diameter of the iris includes sequentially connected digital photo acquisition equipment, an interface unit, an operation and storage unit, and the operation and storage unit includes sequentially connected face recognition modules, Data conversion storage module, measurement and analysis module;

[0051] The digital photo acquisition device is used to acquire digital photos;

[0052] The interface unit is used to provide an interface to import digital photos into the operation and storage unit;

[0053]The face recognition module is used to identify at least one pupil point and iris edge point or each left and right iris edge point through face recognition of digital photos;

[0054] The data conversion storage module is used to calculate the iris diameter in units of pixels and then calculate the conversion coefficient and store it;

[00...

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Abstract

The invention discloses a human head and face digital picture measurement and analysis method and device based on an iris diameter. The method includes the following steps that a digital picture is obtained, and it is guaranteed that the iris of a photographed person can be clearly seen in the digital picture; the digital picture is subjected to human face recognition, at least one pupil point and iris edge point or a left iris edge point and a right iris edge point are recognized; by means of the pupil point and the iris edge point or the left iris edge point and the right iris edge point, the iris diameter with pixel as the unit is calculated; according to different human races, a conversion coefficient is calculated, wherein the conversion coefficient is obtained by dividing the iris diameter with pixel as the unit by the average value, with micrometer as the unit, of iris diameters of different human races; all portions of the head and the face of the person on the digital picture are measured and analyzed, the distance between two points is measured with pixel as the unit, the distance is divided by the conversion coefficient, and the actual distance between the two points with micrometer as the unit is obtained. The method and device solve the problem that a human head and face digital picture cannot be directly measured, and automatic measurement and analysis based on the digital picture are achieved.

Description

technical field [0001] The invention relates to the technical field of measurement and analysis, in particular to a method and device for measuring and analyzing digital photos of the head and face of a human body based on iris diameter. Background technique [0002] In plastic and cosmetic surgery, oral and maxillofacial surgery, it is often necessary to measure and analyze the head and face. The traditional method is to use vernier calipers, squares, dividers and other tools for direct measurement, which takes a long time and requires the patient's good cooperation . With the application of digital photography technology, it is possible to measure the head and face through digital photos. Generally, a ruler is placed on the face position when taking pictures, and the data conversion (pixel to millimeter conversion) is performed through the ruler scale, so that it can be measured from Digital photos measure the actual length. However, many photos are taken without a ruler....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/107
CPCA61B5/1072A61B5/1075A61B5/1077A61B5/1079
Inventor 秦建增
Owner 广州比特软件科技有限公司