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公开(公告)号：US20190077409A1
公开(公告)日：2019-03-14
申请号：US16050788
申请日：2018-07-31
发明人： Ali Shahidi Zandi , Min Liang , Azhar Quddus , Laura Prest , Felix J.E. Comeau
摘要： Non-intrusive assessment of fatigue in drivers using eye tracking. A set of 34 features were extracted from eye tracking data collected in subjects participating in a simulated driving experiment. Vigilance was assessed by power spectral analysis of multichannel electroencephalogram (EEG) signals, recorded simultaneously, and binary labels of alert and drowsy (baseline) were generated for each epoch of the eye tracking data. A classifier and a non-linear support vector machine were employed for vigilance assessment. Evaluation results revealed a high accuracy of 88% for the RF classifier, which significantly outperformed the SVM with 81% accuracy (p
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公开(公告)号：US20160117546A1
公开(公告)日：2016-04-28
申请号：US14921793
申请日：2015-10-23
发明人： Edward Rosales , Xiaoming Nan , Ling Guan , Azhar Quddus , Zhou Qun
CPC分类号： G06K9/00255 , B60R11/04 , G06K9/00261 , G06K9/00288 , G06K9/00845 , G06K9/527 , G06T7/262 , G06T2207/20064 , G06T2207/30201
摘要： A method for use with a stream of images defining a video. The method includes the steps of periodically conducting a face finding operation on an image in the stream. In respect to the last image in the stream preceding the image in which one or more faces was found, a tracker based upon wavelet decomposition is used to find a face for each face found in the last image for which no counterpart was found in the image.
摘要翻译： 一种与定义视频的图像流一起使用的方法。 该方法包括对流中的图像周期性进行面部查找操作的步骤。 对于在其中找到一个或多个面部的图像之前的流中的最后一个图像，使用基于小波分解的跟踪器来找到在图像中找到的每个面部的面部，其中在图像中没有找到对应物 。
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公开(公告)号：US10007840B2
公开(公告)日：2018-06-26
申请号：US14986344
申请日：2015-12-31
发明人： Azhar Quddus , Xiaoming Nan , Naimul Khan , Ling Guan
CPC分类号： G06K9/00288 , G06K9/00 , G06K9/00899 , G06K9/6297
摘要： The method includes a dictionary including a target collection defined by images that are known with a defined level of certainty to include a subject and an imposter collection defined by images of individuals other than the subject. In the method, images of an area are captured over a period of time. In respect of each image: a matching calculation is carried out, based upon a comparison of the image captured with the images in the dictionary to result in a measure of confidence that the subject is in the area; and an inference determination is made to replace one of the target collection images with a further image that is known with the defined level of certainty, the determination being a function of the measure of confidence resultant from the captured image, the measure resultant from one or more previously captured images and the associated capture times.
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公开(公告)号：US09940505B2
公开(公告)日：2018-04-10
申请号：US14921793
申请日：2015-10-23
发明人： Edward Rosales , Xiaoming Nan , Ling Guan , Azhar Quddus , Zhou Qun
CPC分类号： G06K9/00255 , B60R11/04 , G06K9/00261 , G06K9/00288 , G06K9/00845 , G06K9/527 , G06T7/262 , G06T2207/20064 , G06T2207/30201
摘要： A method for use with a stream of images defining a video. The method includes the steps of periodically conducting a face finding operation on an image in the stream. In respect to the last image in the stream preceding the image in which one or more faces was found, a tracker based upon wavelet decomposition is used to find a face for each face found in the last image for which no counterpart was found in the image.
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公开(公告)号：US20160188964A1
公开(公告)日：2016-06-30
申请号：US14986344
申请日：2015-12-31
发明人： Azhar Quddus , Xiaoming Nan , Naimul Khan , Ling Guan
CPC分类号： G06K9/00288 , G06K9/00 , G06K9/00899 , G06K9/6297
摘要： The method includes a dictionary including a target collection defined by images that are known with a defined level of certainty to include a subject and an imposter collection defined by images of individuals other than the subject. In the method, images of an area are captured over a period of time. In respect of each image: a matching calculation is carried out, based upon a comparison of the image captured with the images in the dictionary to result in a measure of confidence that the subject is in the area; and an inference determination is made to replace one of the target collection images with a further image that is known with the defined level of certainty, the determination being a function of the measure of confidence resultant from the captured image, the measure resultant from one or more previously captured images and the associated capture times.
摘要翻译： 该方法包括字典，其包括由具有确定的确定水平已知的图像定义的目标集合，以包括被摄体和由该受试者以外的个体的图像定义的冒名顶替者收藏。 在该方法中，在一段时间内捕获区域的图像。 对于每个图像：基于与字典中的图像捕获的图像的比较来执行匹配计算，以得到对象在该区域中的置信度的度量; 并且进行推断确定以用确定的确定水平已知的另外的图像来替换目标收集图像中的一个，所述确定是从所捕获的图像产生的置信度的函数的函数， 更先前捕获的图像和相关的捕获时间。
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公开(公告)号：US20200151474A1
公开(公告)日：2020-05-14
申请号：US16529444
申请日：2019-08-01
发明人： Ali Shahidi Zandi , Min Liang , Azhar Quddus , Laura Prest , Felix J.E. Comeau
摘要： Non-intrusive assessment of fatigue in drivers using eye tracking. In a simulated driving experiment, vigilance was assessed by power spectral analysis of multichannel electroencephalogram (EEG) signals, recorded simultaneously, and binary labels of alert and drowsy (baseline) were generated for each epoch of the eye tracking data. A classifier and a non-linear support vector machine were employed for vigilance assessment. Evaluation results revealed a high accuracy of 88% for the RF classifier, which significantly outperformed the SVM with 81% accuracy (p
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公开(公告)号：US20190167189A1
公开(公告)日：2019-06-06
申请号：US16212133
申请日：2018-12-06
发明人： Paul Kuttner , Steven Leach , Matt Goledzinowski , Felix J.E. Comeau , Ali Shahidi Zandi , Azhar Quddus
IPC分类号： A61B5/00 , G06Q99/00 , A61B5/18 , A61B5/145 , A61B5/08 , A61B5/16 , A61B3/11 , G01N33/487 , G01N33/94
摘要： A system for use in a jurisdiction comprises a legal regime applicable to the jurisdiction which provides, in a situation wherein persons can be obliged to submit to physiological/behavioural testing based upon need for capacity and at risk of sanction based upon the results of such physiological/behavioural testing, persons that have previously voluntarily undergone a capacity test and substantially simultaneously undergone physiological testing rights different from those who have not.
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公开(公告)号：US20180055354A1
公开(公告)日：2018-03-01
申请号：US15692499
申请日：2017-08-31
CPC分类号： A61B3/113 , A61B5/1103 , A61B5/18 , A61B5/4082
摘要： A method, which is for assessing drowsiness of a subject over a period of time, includes the steps of: acquiring gaze and blink measurements of the subject over a period of time; and statistically comparing the measurements against a plurality of gaze and blink measurements, which have been correlated to alertness, in order to produce a value representative of alertness/drowsiness.
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