Driver fatigue detection system on basis of infrared detection technology

Abstract

The invention relates to a driver fatigue detection system and belongs to the technical field of detection equipment. The driver fatigue detection system comprises a CCD (charge coupled device) camera connected with a DSP (digital signal processor) through a video input decoder, and detection images are subjected to mode identification and processing. An infrared light source of the CCD camera is composed of two groups of infrared diodes, and the infrared diodes are uniformly distributed on a same ring of the same plane and same axis and are optionally switched. The infrared diodes emit infrared light of 850nm and 950nm in wavelength. The driver fatigue detection system is characterized in that judgment of lip syncing is added on the basis of human eye area judgment, so that probability of judgment missing or mistakes is decreased. By a method for differentiating odd-even frames of the images, positions and characteristics of eyes and lips can be accurately detected, and fatigue degree of a driver can be accurately detected. By the aid of a Kalman filter and a Mean-shift algorithm, the positions and the characteristics of the eyes and the lips are continuously detected; by a short-time tracking strategy, the eyes and the lips are tracked, and prediction is realized.

Description

technical field [0001] The invention relates to a driver fatigue detection system, which belongs to the technical field of detection equipment. Background technique [0002] At present, the research methods of driver fatigue detection can be divided into two categories: [0003] a) Starting from the driver's own characteristics, obtain the driver's physiological parameter characteristics or visual characteristics through some equipment, use the different characteristic patterns of the driver in the normal state and the fatigue state, and use the corresponding pattern recognition technology to classify and distinguish, so as to detect to whether there is fatigue; [0004] b) Indirectly judge whether the driver is fatigued according to the behavior of the vehicle. In this type of technology, sensors are used to obtain various parameters of the vehicle during driving. Determine whether the driver is fatigued. [0005] At present, there are many fatigue detection systems, an...

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Problems solved by technology

[0013] At present, the fatigue detection equipment at home and abroad mainly focuses on the detection of the driver's eyes, and does not realize the judgment of the mouth shape, so it is easy to miss and misjudgment; in addition, the current fatigue driving equipment at home and abroad can only detect the position of the eyes in real time and eye features, the prediction function of eye position and eye features cannot be realized, so the prediction function of the driver's fatigue state is not realized; at present, fatigue detection equipment at home and abroad adopts the method of comparing the pixels of odd and even two frames of images to detect the eye position and characteristics, and to detect Slow speed and low detection accuracy

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