Electronics and Telecommunications Research Institute

Lx Semicon Co., Ltd.

Sejong University

Industry-university Cooperation Foundation Korea Aerospace University

Chips & Media, Inc.

University-industry Cooperation Group of Kyung Hee University

Intellectual Discovery Co., Ltd.

Hanbat National University Industry-academic Cooperation Foundation

Sungkyunkwan University

Kwangwoon University Industry-academic Collaboration Foundation

Ideahub Inc.

Lg Electronics Inc.

Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Research & Industrial Cooperation Group

Jung Won Kang

Ha Hyun Lee

Jin Ho Lee

Sung Chang Lim

Hui Yong Kim

Jin Soo Choi

Dong San Jun

Hyun Suk Ko

Seung Hyun Cho

Jin Woong Kim

Yung Lyul Lee

Dae Yeon Kim

Jae Gon Kim

Gwang Hoon Park

Tae Hyun Kim

Dae Young Lee

Seong Jun Bae

Won Geun Ryu

Jin Young Lee

Soon Heung Jung

Do Hyeon Park

Truong Cong Thang

Sang Taick Park

Nam Uk Kim

Hae Chul Choi

Byeung Woo Jeon

Myung Jun Kim

Yong Uk Yoon

Jong Ki Han

Jae Yung Lee

Yang Woo Kim

Young Su Heo

Dong Gyu Sim

Gun Bang

Jee Yoon Park

Ji Yeon Jung

Dae Hyeok Gwon

Jung Hak Nam

Dong Jin Park

Hyo Min Choi

Ji Hoon Do

Soo Woong Kim

Wook Je Jeong

Jun Woo Choi

Aram Back

Jin Woo Hong

Tae Meon Bae

Yong Man Ro

Cong Thang Truong

Jae Ryun Choi

Seung Su Jeon

Ji Youn Jung

Min Jin Ko

Bum Gyu Choi

Dae Ho Kang

Myung Sun Moon

Min Yong Jeon

Jeong Man Son

Jae Ho Cheong

Hyun Gyu Kim

Oe Dong Kim

Hae Chui Choi

Myoung Hun Jang

Jin Ho Mes Lee

Gwi Gwon Kang

Byung Ro Kim

Jae Hoon Kim

Yong Jo Ahn

Sea Nae Park

Jeong Pil Choi

Dong Kyu Lee

Seoung Jun Oh

Jeong Ju Yoo

Won Jun Lee

Jeongseok Ha

Myung Ho Park

Woo Gon Jeon

Woo Woen Gwun

Jun Yeong Yoo

Eun Ho Yoo

Yeun Ho Yoo

Il Hong Shin

Jun Weon Song

Sung Soo Hwang

Hyun Min Han

Kais Azzouzi

Donghyub Kang

Jin Kyu Lee

Mu Hyun Back

Seoung Hwi Kim

Ji Won Moon

Se Hui Kang

Ju Ock Lee

Hee Ji Han

Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.

Image encoding/decoding method and device, and recording medium in which bitstream is stored

There is provided an image encoding/decoding method and apparatus. An image decoding method according to the present invention may comprise reconstructing a most frequent mode (MFM) indicator indicating whether or not an intra prediction mode of a current block is a predetermined intra prediction mode, deriving, on the basis of the MFM indicator, the intra prediction mode of the current block, and generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode.

Image encoding/decoding method and device using MFM indicator and MPM indicator, and recording medium in which bitstream is stored

There is provided a method and apparatus of encoding/decoding an intra prediction mode. The method comprises deriving an intra prediction mode with respect to a current block, constructing a reference sample for the current block on the basis of the derived intra prediction mode, and performing the intra prediction with respect to the current block using the derived intra prediction mode and the constructed reference sample, wherein the intra prediction mode is derived on the basis of a most probable mode (MPM).

Intra prediction mode encoding/decoding method and device, and recording medium in which bitstream is stored

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.

Method for encoding/decoding image using bi-directional optical flow prediction

The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.

Image encoding/decoding method, apparatus, and recording medium for storing bitstream

Disclosed herein is an image encoding/decoding method. A method of decoding an image includes determining an intra prediction mode of a current block, and generating a prediction block of the current block, by performing prediction based on the intra prediction mode. When the intra prediction mode of the current block is a matrix-based intra prediction (MIP) mode, a length of a reference sample used for intra prediction is derived based on a length of the current block.

Method and apparatus for encoding/decoding image in intra prediction and recording medium for storing bitstream

An image encoding/decoding method and apparatus for performing intra prediction mode based intra prediction are provided. An image decoding method may comprise decoding an intra prediction mode of a current block, deriving at least one intra prediction mode from the decoded intra prediction mode of the current block, generating two or more intra prediction blocks using the intra prediction mode of the current block and the derived intra prediction mode, and generating an intra prediction block of the current block based on the two or more intra prediction blocks.

Method and apparatus for image encoding/decoding, and recording medium storing bitstream for intra predicition using reference samples

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.

Video decoding method and apparatus using the same

An image encoding/decoding method and apparatus are disclosed. The image decoding method includes acquiring prediction mode information of a current block from a bitstream, deriving a prediction mode of the current block using the prediction mode information of the current block, acquiring information indicating whether a residual signal of a transform block for the current block is present based on at least one of information on partitioning of the current block or the prediction mode of the current block, and reconstructing the current block based on the information indicating whether the residual signal of the transform block is present.

Intra block copy-based encoding/decoding method and device, and bitstream storage medium

An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. An image decoding method may comprise configuring a plurality of reference sample lines, reconstructing an intra prediction mode of a current block, and performing intra prediction for the current block based on the intra prediction mode and the plurality of reference sample lines.

Method and device for encoding/decoding image, and recording medium in which bitstream is stored

There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding information on whether or not to perform motion information refinement from a bitstream, obtaining second motion information for first motion information on a current block on the basis of the information and reconstructing at least one of the current block and a neighboring block of the current block by using at least one of the first motion information and the second motion information.

Image encoding/decoding method and apparatus for throughput enhancement, and recording medium storing bitstream

Image encoding/decoding method and apparatus for throughput enhancement using motion vector refinement

An image encoding/decoding method is provided. An image decoding method of the present invention may comprise constructing a motion information list for a current block, reconstructing a first index for a first triangular block within the current block and a second index for a second triangular block within the current block, and predicting the first triangular block and the second triangular block, based on the first index, the second index, and the motion information list.

Image encoding/decoding method and apparatus, and recording media storing bitstream

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.

Image encoding/decoding method and apparatus, and recording medium for storing bitstream

The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise configuring an MPM list based on intra-prediction modes of neighbor blocks of a current block and a number of frequencies of the intra-prediction modes of the neighbor blocks, deriving an intra-prediction mode of the current block based on the MPM list, and performing intra-prediction for the current block based on the intra-prediction mode.

Image encoding/decoding method and device, and recording medium storing bit stream

Growing community of inventors

Daejeon, South Korea

Jung Won Kang