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Eye opening and closing detection method of infrared image

A technology of opening and closing detection and infrared images, which is applied in the field of eye opening and closing detection of infrared images, can solve the problems of not being high enough, and the accuracy of calculations that are easily affected by light, and achieve the effect of improving accuracy

Inactive Publication Date: 2017-09-05
南宁市正祥科技有限公司
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AI Technical Summary

Problems solved by technology

There are many methods to detect eye status, such as vertical integral projection method, eye height judgment method and eye aspect ratio, etc., but these methods are easily affected by light and the calculation accuracy is not high enough

Method used

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  • Eye opening and closing detection method of infrared image
  • Eye opening and closing detection method of infrared image
  • Eye opening and closing detection method of infrared image

Examples

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Comparison scheme
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Embodiment Construction

[0046] The following specific examples further illustrate the present invention, but are not intended to limit the present invention.

[0047] The eye opening and closing detection method of an infrared image comprises the following steps:

[0048] S1: Collect infrared images of human faces, and use Adaboost to obtain human eye parts;

[0049] S2: Perform Gamma correction on the eye image to overcome the influence of light;

[0050] S3: Use multi-scale Retinex transformation to remove shadow interference caused by uneven illumination;

[0051] S4: Use iterative thresholding method to binarize the image, so as to obtain the eye area more accurately;

[0052] S5: The state of the eyes is judged by a judging method that combines the information of the opening angle of the corner of the eye and the height of the eye opening.

[0053] The method of Gamma correction is as follows:

[0054] 1) Map the gray value [0,225] to the radian interval [0, π] piecewise, the rules are as fo...

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Abstract

The invention discloses an eye opening and closing detection method of an infrared image. The method includes the steps of S1, acquiring a face infrared image, and acquiring positions of eyes using Adaboost; S2, performing Gamma correction on the eye image to overcome the lighting influence; S3, removing shadow interference caused by non-uniform lighting by using multi-scale Retinex transform; S4, binarizing the image by an iterative threshold method so as to acquire the eye region more accurately; and S5, judging the state of the eyes by a judgment method fused with information on the opening angle of corners of the eyes and the opening height of the eyes.

Description

technical field [0001] The invention specifically relates to an eye opening and closing detection method of an infrared image. Background technique [0002] The most studied in fatigue detection is the use of computer vision technology-based physiological state detection combined with PERCLOSE method to judge fatigue state, and the opening and closing state of human eyes is the basic content of PERCLOSE principle. There are many methods to detect eye status, such as vertical integral projection method, eye height judgment method and eye aspect ratio, etc., but these methods are easily affected by light and the calculation accuracy is not high enough. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for detecting the opening and closing of eyes in an infrared image. [0004] The eye opening and closing detection method of an infrared image comprises the following steps: [0005] S1: Collect infrared imag...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62
CPCG06V40/19G06V40/193G06V40/197G06F18/214
Inventor 不公告发明人
Owner 南宁市正祥科技有限公司
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