公开(公告)号：US20140098198A1

公开(公告)日：2014-04-10

申请号：US14049673

申请日：2013-10-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hee Kyung LEE ,  In Jae LEE ,  Ji Hun CHA ,  Whoi Yul KIM ,  Dong Chan CHO

IPC: H04N13/02 ,  G06F3/01

CPC classification number: H04N13/246 ,  G06F3/013

Abstract: A gaze tracking apparatus and method are provided that may calculate a three-dimensional (3D) position of a user using at least two wide angle cameras, may perform panning, tilting, and focusing based on position information of the user and eye region detection information, using a narrow angle camera, may detect pupil center information and corneal reflected light information from an eye image acquired through an operation of the narrow angle camera, and may finally calculate gaze position information from the pupil center information and the corneal reflected light information.

Abstract translation: 提供了可以使用至少两个广角摄像机来计算用户的三维（3D）位置的注视跟踪设备和方法，可以基于用户的位置信息和眼​​睛区域检测信息进行平移，倾斜和聚焦 使用窄角度摄像机，可以从通过窄角度摄像机的操作获取的眼睛图像中检测瞳孔中心信息和角膜反射光信息，并且可以最终从瞳孔中心信息和角膜反射光信息计算注视位置信息。

公开(公告)号：US20150242678A1

公开(公告)日：2015-08-27

申请号：US14598407

申请日：2015-01-16

Applicant: Electronics and Telecommunications Research Institute ,  Industry-Academic Cooperation Foundation, Yonsei University

Inventor： In Jae LEE ,  Chung Hyun AHN ,  Ji Hun CHA ,  Sang Youn LEE ,  Ji Hun OH ,  Yu Seok BAN

IPC: G06K9/00 ,  G06T7/00 ,  G06K9/62

CPC classification number: G06K9/00302 ,  G06K9/00281 ,  G06K9/6282

Abstract: A method and apparatus of recognizing a facial expression using a local feature-based adaptive decision tree are provided. A method of recognizing a facial expression by a facial expression recognition apparatus may include splitting a facial region included in an input image into local regions, extracting a facial expression feature from each of the local regions using a preset feature extracting algorithm, and recognizing a facial expression from the input image using the extracted facial expression feature based on a decision tree generated by repeatedly classifying facial expressions into two classes until one facial expression is contained in one class and determining a facial expression feature for a corresponding classification.

Abstract translation: 提供了使用基于局部特征的自适应决策树来识别面部表情的方法和装置。 通过面部表情识别装置识别面部表情的方法可以包括将包括在输入图像中的面部区域分割成局部区域，使用预设特征提取算法从每个局部区域提取面部表情特征，以及识别面部 基于通过将面部表情重复分类为两个类别而产生的决策树，使用所提取的面部表情特征从输入图像中输入表达，直到一个面部表情包含在一个类中并确定相应分类的面部表情特征。

公开(公告)号：US20130285901A1

公开(公告)日：2013-10-31

申请号：US13870321

申请日：2013-04-25

Applicant: Electronics and Telecommunications Research Institute ,  Dongguk University Industry-Academic Cooperation Foundation

Inventor： Hee Kyung LEE ,  In Jae LEE ,  Ji Hun CHA ,  Kang Ryoung PARK ,  Chul Woo CHO ,  Su Yeong GWON ,  Hyeon Chang LEE ,  Won Oh LEE

IPC: G06F3/01

CPC classification number: G06F3/013 ,  G06F3/0304

Abstract: A system and method for tracking a gaze at a distance are provided. A remote gaze tracking system may include an infrared lighting unit including a plurality of infrared lightings to emit an infrared light toward a user, a gaze tracking module to track a position of a face of the user, and to collect, from the tracked position of the face, an eye image including at least one reflected light among a plurality of corneal reflected lights and a lens-reflected light, the corneal reflected lights being reflected from a cornea by the emitted infrared light, and the lens-reflected light being reflected from a lens of glasses, and a processor to compare a magnitude of the lens-reflected light with a threshold in the collected eye image, and when the magnitude of the lens-reflected light is equal to or less than the threshold, to detect coordinates of a center of each of the plurality of corneal reflected lights, and to calculate a gaze position.

Abstract translation: 提供了一种用于跟踪远距离注视的系统和方法。 远程注视跟踪系统可以包括红外线照明单元，其包括朝向用户发射红外光的多个红外线照明，用于跟踪用户的脸部位置的注视跟踪模块，以及从所追踪的位置收集 所述脸部，包括多个角膜反射光中的至少一个反射光的眼睛图像和透镜反射光，所述角膜反射光通过所发射的红外光从角膜反射，并且所述透镜反射光从 眼镜镜头和用于将镜片反射光的大小与所收集的眼睛图像中的阈值进行比较的处理器，并且当镜片反射光的大小等于或小于阈值时，检测坐标 多个角膜反射光中的每一个的中心，并计算注视位置。