Electronics and Telecommunications Research Institute

Hanbat National University Industry-academic Cooperation Foundation

University-industry Cooperation Group of Kyung Hee University

Intellectual Discovery Co., Ltd.

Industry-university Cooperation Foundation Korea Aerospace University

Industry-university Cooperation Foundation Korea Aerospace University Korea

Ha Hyun Lee

Hui Yong Kim

Sung Chang Lim

Jin Ho Lee

Jung Won Kang

Hae Chul Choi

Jin Soo Choi

Jin Woong Kim

Se Yoon Jeong

Jong Ho Kim

Jin Woo Hong

Suk Hee Cho

Jae Gon Kim

Do Hyeon Park

Yong Uk Yoon

Dae Hyeok Gwon

Gwang Hoon Park

Dong San Jun

Hyun Suk Ko

Tae Hyun Kim

Dae Young Lee

Won Jun Lee

Ji Hoon Do

Woo Woen Gwun

Jae Ryun Choi

Hee Ji Han

Disclosed herein are image encoding/decoding method and apparatus. The image decoding method according to the present invention includes: obtaining prediction mode information of a neighboring block for a current block from a bitstream; by using the obtained information, deriving a prediction mode of the neighboring block; and, based on the prediction mode of the neighboring block, reconstructing the current block.

Intra prediction mode, and entropy encoding/decoding method and device

Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

Adaptive video encoding device and method, and appartus using same

Adaptive video decoding and encoding method, and apparatus using same

An image encoding/decoding method and apparatus is provided. The method of decoding an image includes decoding at least one of prediction mode information of a neighbor block of a current block and length information of the current block, deriving an intra prediction mode of the current block into a predetermined mode using the decoded information, and reconstructing the current block based on the intra prediction mode of the current block.

Method and device for signaling prediction mode-related signal in intra prediction

An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a prediction mode of a current block as IBC (Intra Block Copy) mode, deriving a candidate list for deriving a block vector of the current block and deriving a block vector of the current block by using the candidate list, wherein the candidate list is derived based on a size of the current block.

Image encoding/decoding method and device, and recording medium using intra block copy

Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.

Image encoding/decoding method and apparatus, and recording medium having stored bitstream thereon

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 bitstream

Growing community of inventors

Daejeon, South Korea

Ha Hyun Lee