公开(公告)号：US20110205350A1

公开(公告)日：2011-08-25

申请号：US13063330

申请日：2009-09-08

申请人： Ryuta Terashima ,  Takumi Yoda ,  Toshihiro Wakita ,  Taishi Tsuda ,  Takuhiro Omi ,  Fumiya Nagai

发明人： Ryuta Terashima ,  Takumi Yoda ,  Toshihiro Wakita ,  Taishi Tsuda ,  Takuhiro Omi ,  Fumiya Nagai

IPC分类号： H04N7/18

CPC分类号： G08B21/06 ,  G06K9/00597

摘要： An open-eye or closed-eye determination apparatus is provided with: an image capture section 11 for capturing an image of a region including the eye of an investigation subject; a width of eye opening measurement section 12 for detecting top and bottom eyelids of an investigation subject from the image captured by the image capture section 11 and measuring the width of eye opening between the edges of the top and bottom eyelids; a filter section 13 for subjecting the width of eye opening measured by the width of eye opening measurement section 12 to filter processing; and an open-eye or closed-eye determination section 14 for determining closed-eye when a value of the width of eye opening obtained by the filter section 13 minus the width of eye opening measured by width of eye opening measurement means is greater than a threshold value, and determining open-eye when this difference is a threshold value or less. According to this open-eye or closed-eye determination apparatus, open-eye or closed-eye determination can be made with good precision, without being influenced by image capture conditions and distance to the face.

摘要翻译： 睁眼或闭眼判定装置设置有：图像捕获部11，用于捕获包括调查对象的眼睛的区域的图像; 眼睛打开测量部分12的宽度，用于从由图像捕获部分11捕获的图像中检测调查对象的顶部和底部眼皮，并测量顶部和底部眼皮边缘之间的眼睛开度的宽度; 过滤器部分13，用于对由眼睛开度测量部分12的宽度测量的眼睛开度的宽度进行过滤处理; 以及当由过滤器部分13获得的眼睛开度的宽度减去由眼睛开度测量装置的宽度测量的眼睛开度的宽度的值时，用于确定闭眼的睁眼或闭眼判定部分14大于 阈值，并且当该差是阈值或更小时确定睁眼。 根据该睁眼或闭眼判定装置，能够以高精度进行睁眼或闭眼判断，而不受图像拍摄条件和与脸部的距离的影响。

公开(公告)号：US20110216181A1

公开(公告)日：2011-09-08

申请号：US13063332

申请日：2009-09-15

申请人： Takumi Yoda ,  Ryuta Terashima ,  Taishi Tsuda ,  Takuhiro Omi

发明人： Takumi Yoda ,  Ryuta Terashima ,  Taishi Tsuda ,  Takuhiro Omi

IPC分类号： G06K9/46 ,  H04N7/18

CPC分类号： B60K28/06 ,  A61B5/1103 ,  A61B5/18 ,  A61B5/6821 ,  A61B2503/22

摘要： An image is captured of a region including an eye of a driver using an image capture device 12, and the degree of eye openness is detected with a degree of eye openness detection section 24. A standard closed eye threshold value, a large value closed eye threshold value and a small closed eye threshold value stored in the threshold value storage section 28 are employed by the feature amount extraction section 30 to extract plural types of blinking feature amount from the detected degree of eye openness time series data. Threshold value determination is performed for each of the plural types of blinking feature amount by the threshold value determination section 32, and determination of the state of drowsiness of the driver is made by the drowsiness determination section 34 based on the threshold value determination results for the plural types of blinking feature amount. Accordingly, respective threshold values appropriate to the types of blinking feature amounts are employed in extracting blinking feature amounts, enabling determination of state of drowsiness to be performed with good precision.

摘要翻译： 使用图像捕获装置12拍摄包括驾驶员的眼睛的区域的图像，并且用眼睛开放度检测部分24检测眼睛开放度。标准闭眼阈值，大值闭眼 存储在阈值存储部28中的阈值和小闭眼阈值被特征量提取部30采用从检测到的开眼度时间序列数据中提取多种类型的闪烁特征量。 通过阈值确定部分32对多种类型的闪烁特征量中的每一种执行阈值确定，并且由睡意判定部分34根据阈值确定结果的阈值确定结果确定驾驶员的嗜睡状态 多种类型的闪烁特征量。 因此，在提取闪烁特征量中采用适合于闪烁特征量的类型的各个阈值，能够以高精度确定要进行的嗜睡状态。