Electronics and Telecommunications Research Institute

University-industry Cooperation Group of Kyung Hee University

Kwangwoon University Industry-academic Collaboration Foundation

Industry-university Cooperation Foundation Korea Aerospace University

Sejong University

Korea Advanced Institute of Science and Technology

Hanbat National University Industry-academic Cooperation Foundation

Sungkyunkwan University

Other

Sung-Chang Lim

Jin Soo Choi

Se Yoon Jeong

Jin Woo Hong

Gwang Hoon Park

Hae Chul Choi

Dong Gyu Sim

Hui-Yong Kim

Jin-Ho Lee

Ha-Hyun Lee

Seoung-Jun Oh

Sea-Nae Park

Hui Yong Kim

Hae-Chul Choi

Chang-Beom Ahn

Seung Ryong Kook

Kwang-Su Jeong

Hyunsuk Ko

Dong-San Jun

Jae-Gon Kim

Jinho Lee

Jongho Kim

Sukhee Cho

Jung-Won Kang

Hahyun Lee

Jin Woong Kim

Yung-Lyul Lee

Do-Hyeon Park

Yong-Uk Yoon

Mun Churl Kim

Jin Ho Lee

Ha Hyun Lee

Jong Ho Kim

Suk Hee Cho

Sea Nae Park

Seung-Hyun Cho

Seoung Jun Oh

Neung Joo Hwang

Ji-Hoon Do

A-Ram Back

Nam-Uk Kim

Byeung-Woo Jeon

Jee-Yoon Park

Jin-Soo Choi

Dae-Hyeok Gwon

Jun-Woo Choi

Myung-Jun Kim

Gun Bang

Jong-Ho Kim

Dong-Gyu Sim

Se-Yoon Jeong

Seong-Jun Bae

Shanglin Yang

C-c Jay Kuo

Qin Huang

Neung-Joo Hwang

Dong Hyu Sim

Soo-Woong Kim

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, inter-prediction information for a target block may be derived, and inter prediction for a target block may be performed using the derived inter-prediction information. Combined inter-prediction information may be performed by combining multiple pieces of inter-prediction information, and the combined inter-prediction information may be added as a candidate to a list used for inter prediction. One of candidates in the list may be selected for inter prediction for the target block, and inter prediction using the selected candidate may be performed.

Method and device using inter prediction information

Disclosed herein are a decoding method and apparatus and an encoding method and apparatus for deriving an intra-prediction mode. An intra-prediction mode may be derived using a method for deriving an intra-prediction mode based on a neighbor block of the target block, a method for deriving an intra-prediction mode using signaling of the intra-prediction mode of the target block, or a method for deriving an adaptive intra-prediction mode based on the type of a target slice. An MPM list may be used to derive the intra-prediction mode, and a temporal neighbor block or the like may be used to configure the MPM list.

Method and apparatus for deriving intra prediction mode

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In the encoding and decoding of a video, a prediction mode may be selected from among multiple prediction modes using prediction mode information for a target block, and prediction may be performed on the target block based on the selected prediction mode, wherein the prediction mode information includes information related to a reference block, and wherein the reference block comprises one or more of a spatially neighboring block that is spatially adjacent to the target block and a temporally neighboring block that is temporally adjacent to the target block. When the selected prediction mode includes a plurality of prediction modes, a prediction mode to be used for prediction of the target block may be decided on among the plurality of selected prediction modes through signaling of the prediction mode decision information.

Prediction method and device using reference block

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved.

Method and apparatus for encoding and decoding using selective information sharing between channels between channels

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.

Image encoder and decoder using unidirectional prediction

Disclosed herein are an image compression apparatus and method. The image conversion method includes generating a multi-plane image reconfigured into layers in a depth direction based on multiple pieces of multi-view image data, generating an aggregated layer by aggregating the layers of the multi-plane image into at least one layer, and converting a multi-plane image including the aggregated layer into a two-dimensional (2D) atlas image.

Image conversion apparatus and method

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information.

Method and device for filtering

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.

Bidirectional intra prediction method and apparatus

Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.

Method and apparatus for image encoding and decoding using temporal motion information

Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

Block form-based prediction method and device

Method and apparatus for encoding and decoding using selective information sharing between channels

Growing community of inventors

Daejeon, South Korea

Sung-Chang Lim