Method and device for detecting living body face by using pupil diameter
A technology of pupil diameter and living body, applied in the field of face recognition, can solve the problems of weak bright pupil, low reliability, and no consideration of the influence of ambient light on pupil constriction, and achieves the effect of convenient use and high reliability.
Active Publication Date: 2018-08-14
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology
The main disadvantage of this method is that it only considers the influence of the current screen brightness on the state of pupil constriction, and does not consider the influence of ambient light on the state of pupil constriction.
This method has two disadvantages: (a) the bright pupil effect is easily disturbed by natural light, for example, if the natural light is strong, the bright pupil phenomenon will be weaker; (b) the reliability of this method is low, because using software Easy to imitate bright pupil effect
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[0063]With reference to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.
[0064] The change in the diameter of the pupil of the human eye is caused by the stretching movement of the iris muscle tissue. The main factors that cause the change in the diameter of the pupil of the human eye are: light intensity, age and distance from the target object. See literature: Factors Affecting Light-Adapted Pupil Size in Normal Human Subjects. Invest Ophthalmol Vis Sci, 1994, 35(3): 1132-1137, and literature: Accommodation, the pupil, and presbyopia. In...
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The present invention discloses a method for detecting a living body face. The method comprises: carrying out repeated measurement on the pupil diameter of the user for N times and determining whetherthe measurement value is reasonable, wherein N is an integer greater than or equal to 1; and in the repeated measurement process, if the M determination results indicate that the measurement value ofthe pupil diameter of the user is reasonable, believing that the detected face is a living face, and otherwise, believing that the detected face is a non-living face, wherein M is an integer greaterthan 0 and less than or equal to N. Corresponding to the above method, the present invention also discloses a device for detecting a living human face. The device comprises: a housing, a display screen, a multi-head camera, a light source, a data processing module, an illuminance sensor, and a target module.
Description
technical field [0001] The invention relates to the field of face recognition, in particular to the detection technology of living human faces. Background technique [0002] With the gradual popularization of electronic payment, the application occasions of face recognition technology are gradually expanding. When using face recognition technology to verify the user's identity, it is a key issue whether to detect living human faces in a timely and effective manner (that is, to detect the deception of fake human faces). There are three types of common pseudo-face spoofing behaviors: (1) placing the user’s photo in front of the face recognition device; (2) using devices such as mobile phones or tablets to play the user’s video in front of the face recognition device; (3) ) wears a three-dimensional mask that mimics the user. [0003] Since live face detection technology plays a very important role in face recognition, personnel from many enterprises, universities and scienti...
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IPC IPC(8): G06K9/00
CPCG06V40/197
Inventor 陈杰春赵丽萍何金
Owner NORTHEAST DIANLI UNIVERSITY