Real-time detection of driver fatigue status is of great significance for road traffic safety.In this paper,a proposed novel driver fatigue detection method is able to detect the driver’s fatigue status around the cl...Real-time detection of driver fatigue status is of great significance for road traffic safety.In this paper,a proposed novel driver fatigue detection method is able to detect the driver’s fatigue status around the clock.The driver’s face images were captured by a camera with a colored lens and an infrared lens mounted above the dashboard.The landmarks of the driver’s face were labeled and the eye-area was segmented.By calculating the aspect ratios of the eyes,the duration of eye closure,frequency of blinks and PERCLOS of both colored and infrared,fatigue can be detected.Based on the change of light intensity detected by a photosensitive device,the weight matrix of the colored features and the infrared features was adjusted adaptively to reduce the impact of lighting on fatigue detection.Video samples of the driver’s face were recorded in the test vehicle.After training the classification model,the results showed that our method has high accuracy on driver fatigue detection in both daytime and nighttime.展开更多
Eye-feature diagnosis is a time-homored met hod for studying many diseases in tradit ional Chinese medicine.There is a dlose relationship between eye feature and viscera,and eye feature is a reflect ion of viscer al h...Eye-feature diagnosis is a time-homored met hod for studying many diseases in tradit ional Chinese medicine.There is a dlose relationship between eye feature and viscera,and eye feature is a reflect ion of viscer al health status.Commercially used ophthalmology diagnosis instr uments have disadvantages and cannot satisfy the requirements of eye feature diagnosis.In this paper,we proposed a novel askiatic imaging method that removes the interference of an ilumination source's reflection shadow and is free from image splicing.We developed a novel imaging system to implement this method,and some eye feature characteristics to analyze visceral diseases were obtained.展开更多
In the paper a referral system to assist the medical experts in the screening/referral of diabetic retinopathy is suggested. The system has been developed by a sequential use of different existing mathematical techniq...In the paper a referral system to assist the medical experts in the screening/referral of diabetic retinopathy is suggested. The system has been developed by a sequential use of different existing mathematical techniques. These techniques involve speeded up robust features（SURF）, K-means clustering and visual dictionaries（VD）. Three databases are mixed to test the working of the system when the sources are dissimilar. When experiments were performed an area under the curve（AUC） of 0.9343 was attained. The results acquired from the system are promising.展开更多
基金The work of this paper was supported by the National Natural Science Foundation of China under grant numbers 61572038 received by J.Z.in 2015.URL:https://isisn.nsfc.gov.cn/egrantindex/funcindex/prjsearch-list。
文摘Real-time detection of driver fatigue status is of great significance for road traffic safety.In this paper,a proposed novel driver fatigue detection method is able to detect the driver’s fatigue status around the clock.The driver’s face images were captured by a camera with a colored lens and an infrared lens mounted above the dashboard.The landmarks of the driver’s face were labeled and the eye-area was segmented.By calculating the aspect ratios of the eyes,the duration of eye closure,frequency of blinks and PERCLOS of both colored and infrared,fatigue can be detected.Based on the change of light intensity detected by a photosensitive device,the weight matrix of the colored features and the infrared features was adjusted adaptively to reduce the impact of lighting on fatigue detection.Video samples of the driver’s face were recorded in the test vehicle.After training the classification model,the results showed that our method has high accuracy on driver fatigue detection in both daytime and nighttime.
基金the National Natural Science Foundation of China(81327005,61361160418,61575100)the National Foundation of High Technology of China(2012AA020102,2013AA041201)+2 种基金the National Key Foundation for Exploring Scientific Instruments(2013YQ190467)the Beijing Municipal Natural Science Foundation(4142025)the Beijing Lab Foundation,and the Tsinghua Autonomous Research Foundation(2014Z01001).
文摘Eye-feature diagnosis is a time-homored met hod for studying many diseases in tradit ional Chinese medicine.There is a dlose relationship between eye feature and viscera,and eye feature is a reflect ion of viscer al health status.Commercially used ophthalmology diagnosis instr uments have disadvantages and cannot satisfy the requirements of eye feature diagnosis.In this paper,we proposed a novel askiatic imaging method that removes the interference of an ilumination source's reflection shadow and is free from image splicing.We developed a novel imaging system to implement this method,and some eye feature characteristics to analyze visceral diseases were obtained.
文摘In the paper a referral system to assist the medical experts in the screening/referral of diabetic retinopathy is suggested. The system has been developed by a sequential use of different existing mathematical techniques. These techniques involve speeded up robust features（SURF）, K-means clustering and visual dictionaries（VD）. Three databases are mixed to test the working of the system when the sources are dissimilar. When experiments were performed an area under the curve（AUC） of 0.9343 was attained. The results acquired from the system are promising.
