公开(公告)号：US20220060714A1

公开(公告)日：2022-02-24

申请号：US17419220

申请日：2019-12-27

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Hae Chul CHOI ,  Dae Hyeok GWON ,  Jae Ryun CHOI

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

Abstract: Disclosed herein is a method of decoding an image. The method includes determining a prediction mode of a current block as a merge mode with motion vector difference (MMVD), deriving a merge candidate list of the current block, deriving a motion vector predictor of the current block using the merge candidate list, deriving a motion vector difference of the current block, and deriving a motion vector of the current block using the motion vector predictor and the motion vector difference. Only some of candidates in the merge candidate list are used to derive the motion vector predictor.

公开(公告)号：US20220038712A1

公开(公告)日：2022-02-03

申请号：US17503570

申请日：2021-10-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin woong KIM ,  Jae Gon KIM ,  Hae Chul CHOI ,  Sang Yong LEE

IPC: H04N19/157 ,  H04N19/70 ,  H04N19/196 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11

Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.

公开(公告)号：US20210377526A1

公开(公告)日：2021-12-02

申请号：US17277987

申请日：2019-09-20

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Hae Chul CHOI ,  Dae Hyeok GWON

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/159 ,  H04N19/70 ,  H04N19/169 ,  H04N19/176

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise identifying a region by partitioning an image, and determining a prediction mode of the region on the basis of at least one of a size of the region, a partition shape, and a coding parameter of the region. The determined prediction mode of the region may be determined as a prediction mode of all coding blocks included in the region.

公开(公告)号：US20210195188A1

公开(公告)日：2021-06-24

申请号：US17130614

申请日：2020-12-22

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 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

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：US20190261004A1

公开(公告)日：2019-08-22

申请号：US16388429

申请日：2019-04-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hae Chul CHOI ,  Se Yoon JEONG ,  Sung-Chang LIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung-Jun OH ,  Chang-Beom AHN ,  Gwang Hoon PARK ,  Seung Ryong KOOK ,  Sea-Nae PARK ,  Kwang-Su JEONG

IPC: H04N19/159 ,  H04N19/615 ,  H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/43 ,  H04N19/51 ,  H04N19/117 ,  H04N19/105 ,  H04N19/587 ,  H04N19/70 ,  H04N19/61 ,  H04N19/593 ,  H04N19/132 ,  H04N19/11 ,  H04N19/625 ,  H04N19/91 ,  H04N19/50 ,  H04N19/44

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

公开(公告)号：US20190238841A1

公开(公告)日：2019-08-01

申请号：US16342225

申请日：2017-10-24

Applicant: Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University ,  Hanbat National University Industry-Academic Cooperation Foundation

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

IPC: H04N19/11 ,  G06F17/18 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/11 ,  G06F17/18 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/513 ,  H04N19/80 ,  H04N19/91

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.

公开(公告)号：US20160173909A1

公开(公告)日：2016-06-16

申请号：US15049854

申请日：2016-02-22

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

Inventor： Sung-Chang LIM ,  Ha Hyun LEE ,  Hui Yong KIM ,  Se Yoon Jeong ,  Suk Hee CHO ,  Hae Chul CHOI ,  Jong Ho KIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung Jun OH ,  Gwang Hoon PARK ,  Mun Churl KIM ,  Neung Joo HWANG ,  Sea Nae PARK

IPC: H04N19/625 ,  H04N19/55 ,  H04N19/615 ,  H04N19/14 ,  H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/122 ,  H04N19/11 ,  H04N19/44 ,  H04N19/107 ,  H04N19/139 ,  H04N19/159 ,  H04N19/52 ,  H04N19/593 ,  H04N19/91 ,  H04N19/18 ,  H04N19/119

CPC classification number: H04N19/122 ,  H04N19/107 ,  H04N19/11 ,  H04N19/119 ,  H04N19/12 ,  H04N19/124 ,  H04N19/13 ,  H04N19/139 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/44 ,  H04N19/50 ,  H04N19/52 ,  H04N19/55 ,  H04N19/593 ,  H04N19/60 ,  H04N19/615 ,  H04N19/625 ,  H04N19/91

Abstract: Provided is a video encoding apparatus, including a signal separator to separate a differential image block into a first domain and a second domain, based on a boundary line included in the differential image block, the differential image block indicating a difference between an original image and a prediction image with respect to the original image, a transform encoder to perform a transform encoding with respect to the first domain using a discrete cosine transform (DCT), a quantization unit to quantize an output of the transform encoding unit in a frequency domain, a space domain quantization unit to quantize the second domain in a space domain, and an entropy encoder to perform an entropy encoding using outputs of the quantization unit and the space domain quantization unit.

公开(公告)号：US20140362913A1

公开(公告)日：2014-12-11

申请号：US14469236

申请日：2014-08-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hae Chul CHOI ,  Se Yoon JEONG ,  Sung-Chang LIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung-Jun OH ,  Chang-Beom AHN ,  Gwang Hoon PARK ,  Seung Ryong KOOK ,  Sea-Nae PARK ,  Kwang-Su JEONG

IPC: H04N19/593 ,  H04N19/91 ,  H04N19/625 ,  H04N19/124

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/43 ,  H04N19/44 ,  H04N19/50 ,  H04N19/51 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract translation: 本发明涉及图像编码和解码技术，更具体地说，涉及使用单向预测的图像编码器和解码器。 图像编码器包括将宏块划分为多个子块的分割单元，单向应用确定单元，用于确定是否将相同的预测模式应用于多个子块中的每一个;以及预测模式确定单元 基于所述单向应用确定单元的确定结果来确定关于所述多个子块中的每一个的预测模式。

公开(公告)号：US20130272395A1

公开(公告)日：2013-10-17

申请号：US13738463

申请日：2013-01-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY ,  KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION

Inventor： Hae Chul CHOI ,  Se Yoon JEONG ,  Sung-Chang LIM ,  Jin Soo CHOI ,  Jin Woo HONG ,  Dong Gyu SIM ,  Seoung-Jun OH ,  Chang-Beom AHN ,  Gwang Hoon PARK ,  Seung Ryong KOOK ,  Sea-Nae PARK ,  Kwang-Su JEONG

IPC: H04N7/32

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/43 ,  H04N19/44 ,  H04N19/50 ,  H04N19/51 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract translation: 本发明涉及图像编码和解码技术，更具体地说，涉及使用单向预测的图像编码器和解码器。 图像编码器包括将宏块划分为多个子块的分割单元，单向应用确定单元，用于确定是否将相同的预测模式应用于多个子块中的每一个;以及预测模式确定单元 基于所述单向应用确定单元的确定结果来确定关于所述多个子块中的每一个的预测模式。