公开(公告)号：US11039128B2

公开(公告)日：2021-06-15

申请号：US16868075

申请日：2020-05-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San Jun ,  Jung Won Kang ,  Sung Chang Lim ,  Hyun Suk Ko ,  Jin Ho Lee ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/147 ,  H04N19/573

Abstract: The present invention provides a method and apparatus for encoding/decoding an image to enhance inter prediction. According to the present invention, the method includes: determining a first reference picture and a second reference picture of a current block; determining both a first reference block in the first reference picture and a second reference block in the second reference picture; partitioning the current block into a plurality of sub blocks; and obtaining a prediction block of each of the sub blocks on the basis of reference candidate block index information of each of the sub blocks.

公开(公告)号：US10944962B2

公开(公告)日：2021-03-09

申请号：US15777562

申请日：2016-11-18

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Dong San Jun ,  Hui Yong Kim ,  Gwang Hoon Park ,  Jin Soo Choi ,  Tae Hyun Kim ,  Dae Young Lee ,  Young Su Heo

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176

Abstract: A method and apparatus use a geometric modified image for video encoding/decoding. The encoding method may include: generating a geometric modified reference picture by geometrically modifying a reference picture; generating a prediction block of a current block within an encoding target picture by performing inter prediction by referencing the reference picture or the geometrically modified reference picture; and encoding inter-prediction information of the current block.

公开(公告)号：US10701379B2

公开(公告)日：2020-06-30

申请号：US16039766

申请日：2018-07-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Won Kang ,  Jin Ho Lee ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/30 ,  H04N19/436

Abstract: Disclosed are a method and an apparatus for video decoding that support a plurality of layers. The method for video decoding includes acquiring information indicating whether tile information exists and acquiring the tile information based on the information indicating whether tile information exists.

公开(公告)号：US10595026B2

公开(公告)日：2020-03-17

申请号：US14391151

申请日：2013-04-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/187 ,  H04N19/70 ,  H04N19/61 ,  H04N19/124 ,  H04N19/13 ,  H04N19/52 ,  H04N19/593 ,  H04N19/80 ,  H04N19/91 ,  H04N19/182

Abstract: The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to grasp information on the layers in the bit stream.

公开(公告)号：US10455241B2

公开(公告)日：2019-10-22

申请号：US16136415

申请日：2018-09-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/187 ,  H04N19/70 ,  H04N19/30

Abstract: Disclosed are an image encoding/decoding method and device supporting a plurality of layers. The image decoding method supporting the plurality of layers comprises the steps of; receiving a bitstream comprising the plurality of layers; and decoding the bitstream so as to acquire maximum number information about sublayers with respect to each of the plurality of layers.

公开(公告)号：US10306244B2

公开(公告)日：2019-05-28

申请号：US16157217

申请日：2018-10-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N7/12 ,  H04N19/187 ,  H04N19/157 ,  H04N19/107 ,  H04N19/503 ,  H04N19/30

Abstract: A method of decoding a bistream comprising a plurality of layers according to the present invention includes setting parameters for decoding the bitstream from a random access point when random access occurs, and decoding a decoding target picture, wherein the setting of the parameters includes setting an initialization flag indicating whether the decoding target picture, that is an intra random access point (IRAP) picture, is output by correctly decoding all reference layers of a target layer including the decoding target picture when the random access occurs; setting a flag variable (NoRaslOutputFlag) indicating whether the decoding target picture is used as a random access point; and resetting the initialization flag when the decoding target picture is an IRAP picture and the flag variable is 1.

公开(公告)号：US10230984B2

公开(公告)日：2019-03-12

申请号：US15878870

申请日：2018-01-24

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-ACADEMIC COOPERATION GROUP OF SEJONG UNIVERSITY

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Jong Ki Han ,  Jae Yung Lee

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/70 ,  H04N19/31 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/177

Abstract: The present invention is related to a method for moving the position of a base view from an arbitrary GOP (Group Of Pictures) start position to implement an efficient encoding structure in multi-view video encoding. The existing multi-view video encoding method exhibits low encoding efficiency when correlation between the base view and a dependent view is low, since the base view is assumed to be fixed. Moreover, in case the view in a live broadcasting program desired by a producer changes from the base view to another, the user has to consume more bit streams and decoder complexity than those consumed when decoding is performed with respect to the base view. Therefore, to alleviate the drawbacks of the existing multi-view video encoding method, the present invention provides a method for designing syntax elements by which the base view can be moved, thereby supporting an efficient encoding structure.

公开(公告)号：US10178142B2

公开(公告)日：2019-01-08

申请号：US15785275

申请日：2017-10-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu

IPC: H04L29/06 ,  H04L29/08 ,  H04N21/239 ,  H04N21/845 ,  H04N21/2343 ,  H04N21/258 ,  H04N21/262 ,  H04N21/658 ,  H04N21/643 ,  H04N21/6437

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata of the content may be efficiently divided for a purpose of use of a terminal based on general media information or specific media information, and may be transmitted to the terminal. A group may include one or more representations of content. The metadata may include a group element, and the group element may provide a summary of attributes of one or more representations included in the group.

公开(公告)号：US10142638B2

公开(公告)日：2018-11-27

申请号：US15027101

申请日：2014-10-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N7/12 ,  H04N19/187 ,  H04N19/30 ,  H04N19/503 ,  H04N19/107 ,  H04N19/157

Abstract: A method of decoding a bitstream comprising a plurality of layers according to the present invention includes setting parameters for decoding the bitstream from a random access point when random access occurs, and decoding a decoding target picture, wherein the setting of the parameters includes setting an initialization flag indicating whether the decoding target picture, that is an intra random access point (IRAP) picture, is output by correctly decoding all reference layers of a target layer including the decoding target picture when the random access occurs; setting a flag variable (NoRaslOutputFlag) indicating whether the decoding target picture is used as a random access point; and resetting the initialization flag when the decoding target picture is an IRAP picture and the flag variable is 1.

公开(公告)号：US10122814B2

公开(公告)日：2018-11-06

申请号：US15069443

申请日：2016-03-14

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROPSACE UNIVERSITY

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu ,  Jae Gon Kim

IPC: G06F15/16 ,  H04L29/08 ,  H04L29/06 ,  H04N21/24 ,  H04N21/44 ,  H04N21/6543 ,  H04N21/6547 ,  H04L12/835 ,  G06F12/00 ,  H04N21/235 ,  H04N21/238

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include a minBufferTime attribute indicating a minimum amount of initially buffered media content. A terminal may receive content from a server before playback of the content, and may buffer the content by at least the minimum amount. The metadata may include a range attribute that designates a range of a target indicated by a Uniform Resource Locator (URL). The terminal may receive bytes designated by the range attribute from the URL, and may play back the content using the received bytes.