Electronics and Telecommunications Research Institute

University-industry Cooperation Group of Kyung Hee University

Lx Semicon Co., Ltd.

Sejong University

Industry-university Cooperation Foundation Korea Aerospace University

Chips & Media, Inc.

Intellectual Discovery Co., Ltd.

Korea Advanced Institute of Science and Technology

Kwangwoon University Industry-academic Collaboration Foundation

Hanbat National University Industry-academic Cooperation Foundation

Sungkyunkwan University

Dolby Laboratories Licensing Corporation

Lg Chem, Ltd

Lg Chemical Ltd.

Silicon Works Co., Ltd.

Jin Ho Lee

Sung Chang Lim

Hui Yong Kim

Ha Hyun Lee

Jin Soo Choi

Jung Won Kang

Jin Woong Kim

Dong San Jun

Hyun Suk Ko

Gwang Hoon Park

Se Yoon Jeong

Jong Ho Kim

Kyung Yong Kim

Seung Hyun Cho

Suk Hee Cho

Chie Teuk Ahn

Hae Chul Choi

Sang Min Kim

Yung Lyul Lee

Dae Yeon Kim

Tae Hyun Kim

Jae Gon Kim

Dae Young Lee

Do Hyeon Park

Sea Nae Park

Mun Churl Kim

Seoung Jun Oh

Dong Gyu Sim

Jin Woo Hong

Nam Uk Kim

Sang Yong Lee

Myung Jun Kim

Yong Uk Yoon

Bum Shik Lee

Yang Woo Kim

Byeung Woo Jeon

Young Su Heo

Chan Woong Jeon

Jee Yoon Park

Dae Hyeok Gwon

Ji Yeon Jung

Dong Jin Park

Gun Bang

Ji Hoon Do

Soo Woong Kim

Sung-Chang Lim

Wook Je Jeong

Jun Woo Choi

Yu Sung Jung

Tae Young Jeon

Jong Hyun Kim

Eun Seon Park

Young Min Kim

Yoon Ho Song

Jong Sung Koh

Joo Byung Chai

Sun Hwa Lee

In Ae Ahn

You Seung Shin

Seong Gu Ro

Hyun Sung Kim

Yil Suk Yang

Hyun Kyu Jeon

Min Yong Jeon

Sang Gi Kim

Jongdae Kim

Heung Lyeol Lee

Seong Wook Yoo

Yong Jo Ahn

Seung Youl Kang

Kyoung Ik Cho

Yong Hae Kim

Jin Woo Jeong

Chi Sun Hwang

Do Hoon Lee

Seong Jun Bae

Yong Suk Yang

Kwang-Seong Choi

Seong Hyun Kim

Yong Sung Eom

Jun Young Park

Jin Woo Park

Dong Myung Kim

Dong Kyu Lee

Kwang Yong Kang

Won Jun Lee

Kwang-ho Lee

Yong Hee Kim

Dae Jun Kim

Young Kwan Kim

Hyun-cheol Bae

Seung Won Jung

Chang Yong Hong

Seul Gi Lee

Woo Woen Gwun

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 method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.

Method and device for encoding/decoding images

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

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.

Apparatus for encoding and decoding image by skip encoding and method for same

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

Growing community of inventors

Daejeon, South Korea

Jin Ho Lee