公开(公告)号：US11151748B2

公开(公告)日：2021-10-19

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：US09870601B2

公开(公告)日：2018-01-16

申请号：US15089993

申请日：2016-04-04

Applicant: Electronics and Telecommunications Research Institute ,  National University of Sciences & Technology

Inventor： Yong Ju Cho ,  Joo Myoung Seok ,  Sang Woo Ahn ,  Ji Hun Cha ,  Arshad Ali ,  Muhammad Murtaza ,  Rehan Hafiz ,  Ashar Rasul ,  Saleh Saeed ,  Muhammad Umer Kakli

IPC: G06K9/32 ,  G06T3/40 ,  G06T7/33 ,  G06T7/38

CPC classification number: G06T3/4038 ,  G06T7/33 ,  G06T7/38 ,  G06T2207/10016

Abstract: An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.

公开(公告)号：US09628528B2

公开(公告)日：2017-04-18

申请号：US14333892

申请日：2014-07-17

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：US09426447B2

公开(公告)日：2016-08-23

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: H04N13/00 ,  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：US09313473B2

公开(公告)日：2016-04-12

申请号：US13660953

申请日：2012-10-25

Applicant: Electronics and Telecommunications Research Institute ,  Gwangju Institute of Science and Technology

Inventor： Seung Jun Yang ,  Ji Hun Cha ,  Jin Woong Kim ,  Sang Beom Lee ,  Yo Sung Ho

IPC: H04N13/00 ,  G06T5/00 ,  G06T5/20 ,  G06T5/50

CPC classification number: H04N13/117 ,  G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2200/04 ,  G06T2207/10021 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/20028 ,  G06T2207/20182 ,  H04N13/15 ,  H04N2013/0081

Abstract: An image synthesizing method according to the present invention includes generating a depth image in a current picture by searching depth information using a plurality of color images obtained at different view points, performing filtering on the depth image using a 3-dimensional (3D) joint bilateral filter, and generating a synthesized image using the plurality of color images and the filtered depth image, wherein the 3D joint bilateral filter performs filtering on the generated depth image using color image information for at least one of previous pictures, the current picture, and subsequent pictures, and the color image information includes information on a boundary of an object in the color images and color information of the color images. According to the present invention, image processing performance may be enhanced.

Abstract translation: 根据本发明的图像合成方法包括通过使用在不同视点获得的多个彩色图像搜索深度信息来生成当前图像中的深度图像，使用三维（3D）联合双边对深度图像进行滤波 使用多个彩色图像和滤波后的深度图像生成合成图像，其中3D关节双边滤波器使用用于至少一个先前图像，当前图像和随后的彩色图像信息对所生成的深度图像进行滤波 图像和彩色图像信息包括关于彩色图像中的对象的边界和彩色图像的颜色信息的信息。 根据本发明，可以提高图像处理性能。

公开(公告)号：US20150095727A1

公开(公告)日：2015-04-02

申请号：US14391071

申请日：2013-06-11

Applicant: Electronics and telecommunications Research Institute

Inventor： Yong Ju Cho ,  Ji Hun Cha

IPC: H04L1/00 ,  G06F11/07

CPC classification number: H04L1/0011 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/0033 ,  H04L1/0041 ,  H04L1/203

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.

Abstract translation: 使用误码率（BER）进行速率适配，以实现有效的多媒体传输。 可以使用MAC层中的信号强度和调制信息来估计BER（图7-9），并且可以通过消息标准化在不同的无线网络中兼容地使用BER。

公开(公告)号：US08914817B2

公开(公告)日：2014-12-16

申请号：US13713083

申请日：2012-12-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo Myoung Seok ,  Ji Hun Cha

IPC: H04H60/33 ,  H04N5/76 ,  H04N5/783 ,  H04N9/79 ,  H04N21/442 ,  H04N21/6587 ,  H04N5/765

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。