公开(公告)号：US20200059642A1

公开(公告)日：2020-02-20

申请号：US16348522

申请日：2017-11-22

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 ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI ,  Gwang Hoon PARK ,  Tae Hyun KIM ,  Dae Young LEE

IPC: H04N19/105 ,  H04N19/52 ,  H04N19/132 ,  H04N19/176 ,  H04N19/117 ,  H04N19/159 ,  H04N19/182 ,  H04N19/46 ,  H04N19/172

Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.

公开(公告)号：US20200053359A1

公开(公告)日：2020-02-13

申请号：US16342310

申请日：2017-10-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY- ACADEMIC COOPERATION FOUNDATION

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

IPC: H04N19/119 ,  H04N19/46 ,  H04N19/105 ,  H04N19/186 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.

公开(公告)号：US20200021804A1

公开(公告)日：2020-01-16

申请号：US16336243

申请日：2017-09-26

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

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method of the present invention comprises decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N, deriving an intra prediction mode of the current block, inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block, and generating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode.

公开(公告)号：US20190335185A1

公开(公告)日：2019-10-31

申请号：US16509299

申请日：2019-07-11

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/31 ,  H04N19/157 ,  H04N19/463 ,  H04N19/172 ,  H04N19/70 ,  H04N19/184 ,  H04N19/51 ,  H04N19/187 ,  H04N19/44 ,  H04N19/105

Abstract: The present invention relates to a method for predicting an inter-layer of an image having a plurality of layers including at least one temporal sub-layer. The method according to present invention comprises the steps of: acquiring information on a temporal sub-layer for inter-layer prediction; inducing a reference picture used for predicting an inter-layer of a current picture on the basis of the information on the temporal sub-layer; and predicting the inter-layer of the current picture on the basis of the reference picture.

公开(公告)号：US20190313102A1

公开(公告)日：2019-10-10

申请号：US16461001

申请日：2017-11-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04N19/129 ,  H04N19/91 ,  H04N19/18 ,  H04N19/159

Abstract: The present invention relates to a method for encoding and decoding an image. For this, a method for decoding an image may include: entropy-decoding a bitstream; determining a scanning unit and a scanning order of the transform coefficients of the current block; scanning and aligning the transform coefficients of the current block based on the determined scanning unit and scanning order; and performing inverse-transform for the aligned transform coefficients.

公开(公告)号：US20190306536A1

公开(公告)日：2019-10-03

申请号：US16308208

申请日：2017-07-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

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

IPC: H04N19/91 ,  H04N19/44 ,  H04N19/176 ,  H04N19/159 ,  H04N19/149

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.

公开(公告)号：US20190215516A1

公开(公告)日：2019-07-11

申请号：US16302210

申请日：2017-06-23

Applicant: Electronics and Telecommunications Research Institute ,  Industry Academy Cooperation Foundation of Sejong University

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 ,  Yung Lyul LEE ,  Nam Uk KIM ,  Jun Woo CHOI

IPC: H04N19/122 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/122 ,  H04N19/103 ,  H04N19/107 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/90

Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).

公开(公告)号：US20190058891A1

公开(公告)日：2019-02-21

申请号：US16166712

申请日：2018-10-22

Applicant: Electronics and Telecommunications Research Institute ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Jin Soo CHOI ,  Jin Woong KIM ,  Dong Gyu SIM ,  Hyo Min CHOI ,  Jung Hak NAM

IPC: H04N19/30 ,  H04N19/33 ,  H04N19/11 ,  H04N19/176 ,  H04N19/503 ,  H04N19/187 ,  H04N19/36 ,  H04N19/103 ,  H04N19/59

Abstract: The present invention relates to a method and an apparatus for interlayer prediction, and the method for interlayer prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied, wherein the reference layer information can be encoding information of a reference block, which corresponds to a current block of the enhancement layer, from the reference layer, and residual information.

公开(公告)号：US20190014346A1

公开(公告)日：2019-01-10

申请号：US16127892

申请日：2018-09-11

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/593 ,  H04N19/82 ,  H04N19/44 ,  H04N19/157 ,  H04N19/117 ,  H04N19/176 ,  H04N19/105 ,  H04N19/136 ,  H04N19/147 ,  H04N19/182

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

公开(公告)号：US20180376167A1

公开(公告)日：2018-12-27

申请号：US16058487

申请日：2018-08-08

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/593 ,  H04N19/82 ,  H04N19/44 ,  H04N19/157 ,  H04N19/117 ,  H04N19/176 ,  H04N19/105 ,  H04N19/136 ,  H04N19/147 ,  H04N19/182

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.