Electronics and Telecommunications Research Institute

University-Industry Cooperation Group of Kyung Hee University

Sejong University

Kwangwoon University Industry-Academic Collaboration Foundation

Handong Global University Industry-Academic Cooperation Foundation

Gun Bang

Gwang Hoon Park

Nam Ho Hur

Woong Lim

Kyung Yong Kim

Hui Yong Kim

Won Sik Cheong

Young Su Heo

Gi Mun Um

Jung Won Kang

Jin Ho Lee

Gwang Soon Lee

Soo Woong Kim

Sung Chang Lim

Ha Hyun Lee

Gi-Mun Um

Woo Woen Gwun

Tae Hyun Kim

Hui-Yong Kim

Yoon Jin Lee

Won Jun Lee

Eun Young Chang

Tae One Kim

Soo In Lee

Dong Gyu Sim

Soo-In Lee

Jin-young Lee

Sea Nae Park

Jong Seok Lee

Jin-Woong Kim

Jin-Ho Lee

Ha-Hyun Lee

Seoung Jun Oh

Hong Chang Shin

Jun Taek Park

Jung-Won Kang

Seong-Jun Bae

Hong-Chang Shin

Taeone Kim

Eun-Young Chang

Jin Soo Choi

Nam-Ho Hur

Jin Woo Hong

Tae-Jin Lee

Sung-Chang Lim

Seoung-Jun Oh

Kug Jin Yun

Gwang-Hoon Park

Dong-Gyu Sim

Seong Jun Bae

Bum Suk Choi

Namho Hur

Young-Kwon Lim

Ji-Hoon Do

Myoung-Ho Lee

Ji Hoon Do

Hyon Gon Choo

Min Seong Lee

Je-Ho Nam

Jae-Gark Choi

Min-Hun Lee

Jong-Seok Lee

Young Bae Byun

Sung Soo Hwang

Mu Hyun Back

Jin Kyu Lee

Hyun Min Han

Ji-Sang Yoo

Youngsoo Park

Jun-Taek Park

Seok Jong Hong

Soo-Woong Kim

Won-Jun Lee

Dae-Young Lee

Tae-hyun Kim

Woo-Woen Gwun

Sung Jae Yoon

Se Hui Kang

Ji Won Moon

Disclosed are region-based image encoding/decoding method and apparatus. The method of decoding an image includes: determining a projection format of a 360-degree video image; determining, on the basis of the determined projection format, a spatial correlation degree between a current block and a neighboring block; and determining, on the basis of the determined spatial correlation degree, a candidate block for predicting the current block.

Method and apparatus for performing encoding/decoding by using region-based inter/intra prediction technique

The present invention relates to a method and apparatus for filling a blank area of MPI view plane based on a pixel ray path. A method for generating multi plane image (MPI) data according to an embodiment of the present disclosure may comprise: calculating a pixel value according to each view for each photographed object, based on a plurality of input images photographed from a plurality of views; generating a view plane at a specific point by recording the calculated pixel value on one MPI layer determined based on the spatial position of the corresponding photographed object among a plurality of MPI layers; and generating MPI data by additionally recording the pixel value for the view.

Method and apparatus for filling blank area of MPI view plane based on pixel ray path

Disclosed herein are a video encoding/decoding method and apparatus. The video decoding method according to the present invention includes: obtaining information on whether filtering is performed on a virtual boundary for a current picture from a bitstream; decoding information on the number of virtual boundaries based on the information on whether filtering is performed on a virtual boundary; decoding information on a position of a virtual boundary based on the information on the number of virtual boundaries; and reconstructing the current picture based on the information on the position of the virtual boundary.

Virtual boundary signaling method and apparatus for video encoding/decoding

Disclosed herein are an image encoding/decoding method and apparatus, and a recording medium storing a bitstream. The image decoding method according to the present invention includes: deriving slice mode information for at least one slice comprised in a current picture; deriving information on the number of slices based on the slice mode information; deriving tile information of a current slice based on the information on the number of slices; and, decoding the current slice based on the tile information. Herein, the tile information includes tile index presence information and tile index difference value information, and the tile index difference value information is not signaled for a last slice included in the current picture.

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

Disclosed herein are a method, an apparatus and a storage medium for performing encoding/decoding on an image using a subpicture. A picture may be partitioned into various units such as subpictures and slices, and various syntax elements and structures may be used to specify the units. In an embodiment, there is a method for configuring a reference picture list for motion compensation in the case where the location of a reference subpicture to be referred to for motion compensation is different from the location of a target subpicture. Further, in an embodiment, there is provided a method for providing the configuration of a reference picture list and an override on the number of activated reference indexes.

Method, apparatus and storage medium for image encoding/decoding using subpicture

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 is a method for generating a texture map of a 3D mesh includes encoding a texture map of a 3D mesh, quantizing the encoded texture map, decoding the quantized texture map, performing rendering using the decoded texture map, and updating the texture map of the 3D mesh based on the value of a loss function.

Apparatus and method for generating texture map of 3-dimensional mesh

Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether transform/inverse transform is skipped in a current block; when transform/inverse transform is skipped in the current block according to the transform skip mode flag, determining that secondary transform/inverse transform is skipped in the current block; and when transform/inverse transform is not skipped in the current block according to the transform skip mode flag, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, determining whether secondary transform/inverse transform is skipped in the current block based on the transform matrix index.

Image encoding/decoding method using secondary transform based on a transform skip mode flag and a transform matrix index

There is provided a method of decoding an image, the method comprising: decoding information for motion information prediction of a current block from a bitstream, predicting motion information of the current block based on the information, refining motion information of the current block by using the decoded information and the predicted motion information of the current block and reconstructing the current block based on the refined motion information of the current block.

Motion information prediction method and apparatus for distortion due to projection formation conversion

The present invention relates to a video decoding method, the video decoding method according to an embodiment of the present invention comprises, obtaining sub-picture information of a current sub-picture through at least one signaling level and decoding the current sub-picture using the sub-picture information, wherein the sub-picture information is obtained for each decoded sub-picture.

Image encoding/decoding method and device, and recording medium storing bitstream

Disclosed herein are a method and apparatus for image encoding and image decoding using region segmentation. A picture is divided into multiple sub-pictures, and encoding and/or decoding are performed on the multiple sub-pictures resulting from division. Encoding operations and/or decoding operations on the sub-pictures may be independently performed. Merging and filtering are applied to reconstructed sub-pictures generated by decoding, and a reconstructed picture is generated after processing of merging and filtering.

Method and apparatus for image encoding and image decoding using area segmentation

Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method includes acquiring a partitioning index of a current block from a bitstream, and generating a prediction sample of the current block by weighted-summing a prediction sample of a first subblock of the current block and a prediction sample of a second subblock of the current block based on the partitioning index. The partitioning index indicates a partitioning distance and a partitioning direction included in a predefined table.

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

Disclosed herein are a method, apparatus, and storage medium for image encoding/decoding using a reference picture. A reference picture list is configured for encoding/decoding of a target block. Upon configuring the reference picture list, a sequence parameter set and a slice header are used. A picture is divided into sub-pictures and/or slices, and reference picture lists are configured for the sub-pictures and/or slices resulting from division. Reference picture lists for slices may be related to each other, and a current reference picture and a future reference picture in one reference picture list may be used in an additional reference picture list.

Method, device, and recording medium for encoding/decoding image using reference picture

There is provided an image decoding method comprising: deriving a first prediction value of a current block by using at least one sample included in a reference block, obtaining an illumination compensation parameter on the basis of a predetermined reference region, deriving a second prediction value of the current block by applying the illumination compensation parameter to the first prediction value and reconstructing the current block on the basis of the second prediction value.

Method and device for effective video encoding/decoding via local lighting compensation

Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding using a palette mode. Prediction using a palette mode may be performed for a target block. Various types of predictions may be performed for the target block, and pieces of information to be signaled from an encoding apparatus to a decoding apparatus may be changed depending on the type of prediction to be performed for the target block. Determination of the pieces of information to be signaled may be optimized for the case where a palette mode is to be used for the target block, and thus efficiency of image encoding and decoding may be improved.

Method and device for encoding/decoding image by using palette mode, and recording medium

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Daejeon, South Korea

Gun Bang