Driver face tracking device and method

A tracking device and driver technology, applied in the field of face tracking, can solve the problems of small acquisition image range, limited camera image acquisition range, missed detection, etc. The effect of image quality

Active Publication Date: 2019-08-06
ZHEJIANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] With the development of technology, the application of face tracking technology is becoming more and more extensive, such as security monitoring, video conferencing, and visual fatigue driving detection. However, the image acquisition range of the camera is limited. When the detection target exceeds the acquisition range, there will be Missing detection and other issues
In visual driving fatigue detection, if the focal length of the camera is too small, the pixels occupied by the target feature will be too small; if the camera is too large, the range of image acquisition will be too small, which is prone to missed detection and misjudgment

Method used

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  • Driver face tracking device and method
  • Driver face tracking device and method

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Experimental program
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Embodiment 1

[0044] Please refer to the attached Figure 1-2 , the invention provides a driver's face tracking method, comprising the steps of:

[0045] S1: Use the camera to collect image information including the driver's face in the driving environment; where the resolution of the image collected by the camera is 640 pixels*480 pixels, and the face area accounts for 10% of its area.

[0046] S2: If the current frame is the first frame of the video stream detection, then use the face classifier to perform a full-image search on the collected images to obtain face state information (x, y, v x ,v y , w, h), intercept the face image and save the template; if the current frame is not the first frame of video stream detection, then use the face template of the previous frame and the coordinate position of the face to match in the current frame, and perform rough positioning. Coarsely locate the face area classifier to search, perform fine positioning, and obtain face status information an...

Embodiment 2

[0067] See attached Figure 3-4 , the present invention provides a driver's face tracking device, comprising: a base, a pan-tilt motor one 31, a pan-tilt bracket 6, a pan-tilt motor two 32 and an imaging device, the pan-tilt motor one 31 is installed in the base, and the cloud Platform support 6 one ends are connected with the output end transmission of cloud platform motor one 31, and the other end is connected with two 32 transmissions of cloud platform motor, camera device is arranged on cloud platform support 6 one sides, and cloud platform motor two 32 is installed in the camera device. Under the effect of pan-tilt motor one 31, the pan-tilt bracket 6 drives the camera device to rotate in the horizontal direction, and under the effect of the cloud-tilt motor two 32, the camera device rotates in the vertical direction, so that the camera device can follow the target face in real time Motion, improve the quality of captured images.

[0068] Wherein, the base includes a sea...

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Abstract

The invention discloses a driver face tracking device and method. The method comprises the following steps: capturing driver face image information; judging whether a face template exists or not; enabling the face classifier to carry out positioning; predicting a face motion state; calculating the difference between the face region center and the image center; enabling the single-chip microcomputer to control the double-shaft holder to follow the face. The method can follow the target face to move in real time, and improves the quality of the acquired image.

Description

technical field [0001] The invention belongs to the technical field of face tracking, and more specifically relates to a driver face tracking device and method. Background technique [0002] With the development of technology, the application of face tracking technology is becoming more and more extensive, such as security monitoring, video conferencing, and visual fatigue driving detection. However, the image acquisition range of the camera is limited. When the detection target exceeds the acquisition range, there will be Missing detection and other issues. In visual driving fatigue detection, if the focal length of the camera is too small, the pixels occupied by the target feature will be too small. If the camera is too large, the range of image acquisition will be too small, which is prone to missed detection and misjudgment. [0003] Therefore, how to provide a driver's face tracking device and method has become an urgent problem to be solved by those skilled in the art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/232G06K9/00
CPCH04N7/185G06V40/172G06V20/597H04N23/695Y02T10/40
Inventor 庄千洋王佳逸陈倩倩朱苗苗丁璐黄勋
Owner ZHEJIANG NORMAL UNIVERSITY
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