A method and device for detecting personnel status based on head information

Abstract

The embodiment of the present invention discloses a person state detection method and device based on head information, the method comprising: detecting two-dimensional position information of face feature points in the face from a face image including the face of the target person, The face feature points include: the eyelid feature points of the upper and lower eyelids in the face; based on the two-dimensional position information of the face feature points and the preset three-dimensional face model, the target three-dimensional face model corresponding to the target person is constructed, and the target three-dimensional face model Including: the upper and lower eyelids of the human eye constructed based on eyelid feature points; based on the target 3D face model and / or face image, determine the current posture information of the target person's head; based on the 3D position of the upper and lower eyelids in the target 3D face model Information, determine the current opening and closing length between the upper and lower eyelids of the human eye; determine the current state of the target person based on the current posture information and the current opening and closing length, so as to improve the accuracy of the detection result of the current state of the target person.

Description

technical field [0001] The present invention relates to the technical field of video surveillance, and in particular, to a method and device for detecting a person's state based on head information. Background technique [0002] The current state detection method of the relevant personnel can generally determine the current state of the personnel by detecting the state of the human eye. Specifically, the process of the method for detecting the current state of the person is generally as follows: obtaining a face image collected for the target person, and determining the degree of opening and closing between the upper and lower eyelids of the human eye in the face image to determine the eye level of the target person. state, and further, determine whether the current state of the target person is a fatigue state, wherein when the opening and closing degree is lower than the preset opening and closing threshold, it is determined that the human eye is in a closed state, and the...

AI Technical Summary

Problems solved by technology

[0003] However, in the current state detection method of relevant personnel, the current state of the driver is determined only based on the state of the human eye, which is prone to false detection to a certain extent

For example, when the person is a vehicle driver and the vehicle is driven in a strong light environment, the impact of strong light will easily cause the degree of opening and closing of the upper and lower eyelids of the driver's eyes to be lower than the preset opening and closing threshold , and thus prone to false detection results

Images