公开(公告)号：US20130163825A1

公开(公告)日：2013-06-27

申请号：US13721689

申请日：2012-12-20

申请人： DENSO CORPORATION

发明人： Atsushi Shimura

IPC分类号： G06K9/00

CPC分类号： G06K9/00335

摘要： A head movement detection apparatus capable of more reliably detecting a head movement of a subject. In the apparatus, an image capture unit captures a facial image of the subject. A trajectory acquisition unit acquires a trajectory of a facial feature point of the subject over time from a sequence of facial mages captured by the image capture unit. A storage unit stores a set of features of a trajectory of the facial feature point during a specific head movement made by the subject. A head movement detection unit detects the specific head movement made by the subject on the basis of a degree of correspondence between the set of features of the trajectory previously stored in the storage unit and a corresponding set of features of a trajectory acquired by the trajectory acquisition unit.

摘要翻译： 一种头部移动检测装置，其能够更可靠地检测被检体的头部移动。 在该装置中，图像捕获单元捕获被摄体的面部图像。 轨迹获取单元从图像拍摄单元捕获的面部图像的序列中获取被摄体的面部特征点的轨迹。 存储单元在由被摄体进行的特定头部运动期间存储面部特征点的轨迹的一组特征。 头部移动检测单元基于先前存储在存储单元中的轨迹的特征集合与通过轨迹获取获得的轨迹的特征的对应集合之间的对应程度来检测由被摄体进行的特定头部移动 单元。

公开(公告)号：US09082012B2

公开(公告)日：2015-07-14

申请号：US13685804

申请日：2012-11-27

申请人： DENSO CORPORATION

发明人： Atsushi Shimura

IPC分类号： G06K9/00

CPC分类号： G06K9/00617 ,  G06K9/00845

摘要： An eye state detection apparatus includes a camera, a first calculator, a memory, a second calculator, and a third calculator. The camera obtains a plurality of face images of a driver. The first calculator calculates an opening amount of an eye of the driver based on each face image. The memory stores the opening amounts calculated by the first calculator. The second calculator groups the opening amounts into a plurality of groups in a sequential manner, calculates a group distribution of each group, calculates an entire distribution of all of the opening amounts, and sets the entire distribution as a reference distribution when a difference among the group distributions is within a predetermined range. The third calculator calculates an opening degree of the eye based on the reference distribution of the opening amounts when the reference distribution of the opening amounts is calculated by the second calculator.

摘要翻译： 眼睛状态检测装置包括照相机，第一计算器，存储器，第二计算器和第三计算器。 相机获得驾驶员的多个脸部图像。 第一计算器基于每个脸部图像计算驾驶员的眼睛的开口量。 存储器存储由第一计算器计算的打开量。 第二计算器按顺序将开仓数量组合成多个组，计算每个组的组分配，计算所有开仓量的全部分配，并将整个分布设置为参考分配，当差额 组分布在预定范围内。 当第二计算器计算出开启量的参考分布时，第三计算器基于打开量的参考分布来计算眼睛的开度。