Sk Telecom Company, Ltd.

Pixtree, Inc.

Sk Telecom Ltd.

Hyeong-duck Kim

Jae-seob Shin

Jeong-yeon Lim

Se-hoon Son

Sun-young Lee

Gyeong-taek Lee

Hyo Song Kim

Jung-Han Kim

Sung-gul Ryoo

Dong-bum Seo

A video decoding method for decoding an input bitstream in which each of pictures has been encoded with being split into a plurality of tiles, the method includes decoding partial decoding information included in the input bitstream and determining one or more target tiles to be decoded among the plurality of tiles according to the partial decoding information; and decoding video data corresponding to the one or more target tiles, wherein the partial decoding information includes at least one of first information indicating whether to perform partial decoding and second information indicating an area on which partial decoding is to be performed.

Method and apparatus for video decoding of area of interest in a bitstream

A video decoding apparatus decodes a sequence of one or more pictures in the unit of blocks which are split from each picture. The apparatus comprising a decoder configured to reconstruct, from a bitstream, a current motion vector difference of the current block among the blocks which belong to the sequence of one or more pictures, and an image decoder configured to predict and decode the current block using the motion vector of the current block. When the current motion vector difference of the current block is zero, the resolution of the current motion vector difference of the current block is set to the ¼ pixel precision without the information on the motion vector resolution extracted.

Apparatus and method for encoding or decoding video using adaptive motion vector resolution

Disclosed herein is video encoding or decoding for efficiently encoding video. The techniques of the present disclosure are related to various split shapes of a block, syntaxes representing various split types of blocks, and syntax elements represented at a high level therefor.

Apparatus and method for video encoding or decoding supporting various block sizes

Disclosed herein is a method for adaptive bidirectional optical flow estimation for inter-screen prediction compensation during video encoding. The method aims to reduce complexity and/or cost of bidirectional optical flow (BIO) at a pixel level or a subblock level.

Motion compensation method and device using bidirectional optical flow

The present invention relates to efficient signaling of an intra prediction mode for predicting a current block in intra prediction coding. According to an aspect of the present invention, a video encoding apparatus divides dozens of intra modes into groups, selects a group to which an actual intra mode of the current block to be encoded belongs, and signals a value corresponding to the group. The video decoding apparatus acquires information on the group to which the actual intra mode of the current block belongs from a bit-stream and then evaluates intra modes belonging to the group to select a final intra mode.

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Suwon-si, South Korea

Hyeong-duck Kim