公开(公告)号：US20200296417A1

公开(公告)日：2020-09-17

申请号：US16640129

申请日：2018-08-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Suk KO ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jung Won KANG ,  Jin Ho LEE ,  Dong San JUN ,  Hui Yong KIM

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise reconstructing an intra prediction mode of a current block, determining a reference sample for intra prediction of the current block, and generating a prediction block of the current block by performing the intra prediction on the current block on the basis of the intra prediction mode and the reference sample. The determining of the reference sample or the intra prediction may be performed on the basis of a shape of the current block.

公开(公告)号：US20200296412A1

公开(公告)日：2020-09-17

申请号：US16887370

申请日：2020-05-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN

IPC: H04N19/52

Abstract: An inter prediction method according to the present invention comprises: a step for deriving reference motion information related to a unit to be decoded in a current picture; and a step for performing motion compensation for the unit to be decoded, using the reference motion information that has been derived. According to the present invention, image encoding/decoding efficiency can be enhanced.

公开(公告)号：US20200288134A1

公开(公告)日：2020-09-10

申请号：US16634922

申请日：2018-07-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Chang LIM ,  Hyun Suk KO ,  Jung Won KANG ,  Jin Ho LEE ,  Ha Hyun LEE ,  Dong San JUN ,  Hui Yong KIM

IPC: H04N19/129 ,  H04N19/64 ,  H04N19/186 ,  H04N19/176

Abstract: The present invention relates to an image encoding and decoding method. An image decoding method for the same may include: obtaining transform coefficients of a current block from a bitstream; determining a scanning unit and a scanning order of the current block; and rearranging the transform coefficients of the current block by scanning the same base on the determined scanning unit and scanning order.

公开(公告)号：US20200280735A1

公开(公告)日：2020-09-03

申请号：US16620545

申请日：2018-06-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Dong San JUN ,  Jin Ho LEE ,  Ha Hyun LEE ,  Hui Yong KIM

IPC: H04N19/523 ,  H04N19/176

Abstract: Disclosed is an image encoding method. The method includes deriving a motion refinement candidate from among motion information of spatial neighboring blocks, motion information of a temporal neighboring blocks, predefined motion information, and motion information that most frequently occurs in a reference picture, performing a motion information refinement on the derived motion refinement candidate, and generating a prediction block of a current block by using the motion refinement candidate having undergone the motion information refinement.

公开(公告)号：US20200236362A1

公开(公告)日：2020-07-23

申请号：US16650591

申请日：2018-09-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Dong San JUN ,  Hui Yong KIM

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/52 ,  H04N19/513 ,  H04N19/176

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprises determining step for determining whether or not to derive second motion information when a current block includes first motion information only and for which bi-directional prediction is available, a deriving step for deriving the second motion information based on the first motion information, and a predicting step for generating a prediction block of the current block by performing BIO prediction based on the first motion information and the second motion information.

公开(公告)号：US20200092551A1

公开(公告)日：2020-03-19

申请号：US16691203

申请日：2019-11-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/117 ,  H04N19/61 ,  H04N19/51 ,  H04N19/159 ,  H04N19/13 ,  H04N19/124 ,  H04N19/105 ,  H04N19/80 ,  H04N19/14 ,  H04N19/30 ,  H04N19/176

Abstract: A video decoding method according to an embodiment of the present invention may include determining a type of a filter to be applied to a first-layer picture which a second-layer picture as a decoding target refers to; determining a filtering target of the first-layer picture to which the filter is applied; filtering the filtering target based on the type of the filter; and adding the filtered first-layer picture to a second-layer reference picture list. Accordingly, the video decoding method and an apparatus using the same may reduce a prediction error in an upper layer and enhance encoding efficiency.

公开(公告)号：US20200029079A1

公开(公告)日：2020-01-23

申请号：US16494027

申请日：2018-02-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS&MEDIA, INC.

Inventor： Dae Yeon KIM ,  Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/103 ,  H04N19/124 ,  H04N19/70

Abstract: According to an embodiment of the present invention, there is provided an image decoding method including: obtaining an arithmetic-coded symbol stream from an image stream; identifying a symbol segment from the symbol stream according to symbol segment information signaled from an encoding apparatus; selecting an arithmetic decoding process corresponding to the symbol segment; and collectively processing one or more symbols among multiple symbols included in the symbol segment, in association with the selected arithmetic decoding process.

公开(公告)号：US20190297325A1

公开(公告)日：2019-09-26

申请号：US16301409

申请日：2017-07-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Jin Ho LEE ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176

Abstract: The present invention relates to a video encoding and decoding method. A video decoding method for the same may include: obtaining granularity information; determining a sharing region based on the granularity information; and generating a prediction block of a current block by using motion information of the sharing region when the current block corresponds to the sharing region.

公开(公告)号：US20190166375A1

公开(公告)日：2019-05-30

申请号：US16321145

申请日：2017-08-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San JUN ,  Jin Ho LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Ha Hyun LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/159 ,  H04N19/126 ,  H04N19/13 ,  H04N19/50 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.

公开(公告)号：US20190149820A1

公开(公告)日：2019-05-16

申请号：US16244854

申请日：2019-01-10

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

Inventor： Sung Chang LIM ,  Ha Hyun LEE ,  Se Yoon JEONG ,  Hui Yong KIM ,  Suk Hee CHO ,  Jong Ho KIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Dong Gyu SIM ,  Seoung Jun OH ,  Gwang Hoon PARK ,  Sea Nae PARK ,  Chan Woong JEON

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/82 ,  H04N19/159 ,  H04N19/192 ,  H04N19/174 ,  H04N19/46 ,  H04N19/50 ,  H04N19/17 ,  H04N19/132 ,  H04N19/593 ,  H04N19/109

Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.