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。

公开(公告)号：US20130156407A1

公开(公告)日：2013-06-20

申请号：US13713083

申请日：2012-12-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joo Myoung SEOK ,  Ji Hun CHA

IPC: H04N5/76

CPC classification number: H04N5/76 ,  G06F3/013 ,  H04N5/765 ,  H04N5/783 ,  H04N9/7921 ,  H04N21/44218 ,  H04N21/6587

Abstract: A progressive video streaming apparatus and method based on a visual perception are provided, and the progressive video streaming apparatus may include a gaze detector to detect gaze information including at least one of a location of a focus and a viewing angle of a user, a video playback quality determiner to determine video playback quality layers, based on the detected gaze information, a progressive streaming receiver to request video data and receive the video data, using a visual perception priority based on the detected gaze information, and a visual perception-based player to play back the received video data, by controlling an interactive delay to be reduced below a selected criterion, while reducing a visually recognized quality change in the received video data below another selected criterion.

Abstract translation: 提供了一种基于视觉感知的逐行视频流式传输设备和方法，并且逐行视频流传输设备可以包括注视检测器，用于检测凝视信息，其包括用户的焦点位置和视角中的至少一个，视频 播放质量确定器，基于检测到的注视信息来确定视频播放质量层，使用基于检测到的注视信息的视觉感知优先级来请求视频数据和接收视频数据的逐行流式接收器，以及基于视觉感知的播放器 通过将交互式延迟降低到低于所选择的标准，同时将所接收的视频数据中的视觉识别的质量变化降低到低于另一个选择的标准，来播放所接收的视频数据。

公开(公告)号：US20210304354A1

公开(公告)日：2021-09-30

申请号：US17259861

申请日：2019-07-12

Applicant: Electronics and Telecommunications Research Institute ,  IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

Inventor： Eun Young CHANG ,  Ji Hun CHA ,  Su Gil CHOI ,  Euee Seon JANG ,  Li CUI ,  So Myung LEE

IPC: G06T3/40 ,  G06T9/00 ,  G06T5/00

Abstract: There is provided a scalable point cloud encoding/decoding method and apparatus. The scalable point cloud decoding method comprises: acquiring an encoded texture image, an encoded geometry image, encoded occupancy map information, and encoded auxiliary patch-info information from a bitstream; acquiring a decoded texture image for each partition using the encoded texture image; reconstructing a geometry image of at least one item selected from among the encoded geometry image, the encoded occupancy map information, and the encoded auxiliary catch-info information; and reconstructing a point cloud using the texture images for the respective partitions and the geometry image.

公开(公告)号：US20200271792A1

公开(公告)日：2020-08-27

申请号：US16708143

申请日：2019-12-09

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Yoo La HWANG ,  Jae Young AHN ,  Byoung Sun LEE ,  Ji Hun CHA ,  Byung Woon PARK ,  Yong Jun LEE ,  Cheol Soon LIM

IPC: G01S19/22 ,  G01S19/40

Abstract: The present invention provides a method of performing a position measurement on the basis of a signal from a global navigation satellite system (GNSS). The method includes: receiving initial position information; estimating an initial value of a multipath error through a measurement of the GNSS signal on the basis of the received initial position information; estimating a multipath error from the initial value of the multipath error on the basis of a change in the measurement; removing the estimated multipath error from the measurement of the GNSS signal; and performing the position measurement on the basis of the GNSS measurement from which the multipath error is removed.

公开(公告)号：US20190052688A1

公开(公告)日：2019-02-14

申请号：US16166492

申请日：2018-10-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seong Yong LIM ,  Joo Myoung SEOK ,  Sang Woo AHN ,  Yong Ju CHO ,  Ji Hun CHA

IPC: H04L29/06

CPC classification number: H04L65/4084 ,  H04L65/4092 ,  H04L65/601 ,  H04L65/608

Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.

公开(公告)号：US20150029306A1

公开(公告)日：2015-01-29

申请号：US14044405

申请日：2013-10-02

Applicant: Natural University of Sciences & Technology(NUST) ,  Electronics and Telecommunications Research Institute

Inventor： Yong Ju CHO ,  Seong Yong LIM ,  Joo Myoung SEOK ,  Myung Seok KI ,  Ji Hun CHA ,  Rehan HAFIZ ,  Muhammad Murtaza KHAN ,  Ameer HAMZA ,  Arshad ALI

IPC: H04N5/232

CPC classification number: H04N5/23267 ,  G06T7/246 ,  G06T7/33 ,  G06T2207/20016 ,  G06T2207/20021 ,  G06T2207/30241 ,  H04N5/23238 ,  H04N5/23254

Abstract: The present invention proposes a method and apparatus for correcting a motion of panorama video captured by a plurality of cameras. The method of the present invention includes performing global motion estimation for estimating smooth motion trajectories from the panorama video, performing global motion correction for correcting a motion in each frame of the estimated smooth motion trajectories, performing local motion correction for correcting a motion of each of the plurality of cameras for the results in which the motions have been corrected, and performing warping on the results on which the local motion correction has been performed.

Abstract translation: 本发明提出了一种用于校正由多个摄像机拍摄的全景视频的运动的方法和装置。 本发明的方法包括执行全局运动估计，以估计来自全景视频的平滑运动轨迹，执行全局运动校正，用于校正估计的平滑运动轨迹的每帧中的运动，执行局部运动校正以校正每个 对于运动已经被校正的结果的多个摄像机，并且对已经执行了局部运动校正的结果进行翘曲。

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：US20200043199A1

公开(公告)日：2020-02-06

申请号：US16509677

申请日：2019-07-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

Inventor： Eun Young CHANG ,  Ji Hun CHA ,  Su Gil CHOI ,  Euee Seon JANG ,  Min Ku LEE ,  You Sun PARK

IPC: G06T9/00

Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.

公开(公告)号：US20190097752A1

公开(公告)日：2019-03-28

申请号：US16206550

申请日：2018-11-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju CHO ,  Ji Hun CHA

IPC: H04L1/00 ,  H04L1/20

Abstract: Rate adaptation is carried out using bit error rate (BER) to enable effective multimedia transmission. The BER can be estimated using signal strength in a MAC layer and modulation information (FIGS. 7-9), and can be compatibly used in different wireless networks by means of message standardization.

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。