公开(公告)号：US10218998B2

公开(公告)日：2019-02-26

申请号：US15892052

申请日：2018-02-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy Lee ,  Woo-Jin Han

IPC: H04N19/513 ,  H04N19/56 ,  H04N19/70 ,  H04N19/51 ,  H04N19/96 ,  H04N19/176 ,  H04N19/577 ,  H04N19/124 ,  H04N19/159 ,  H04N19/61 ,  H04N19/172 ,  H04N19/182

Abstract: An encoding method and apparatus and a decoding method and apparatus for determining a motion vector of a current block based on a motion vector of at least one previously-encoded or previously-decoded block are provided. The decoding method includes: decoding information regarding a prediction direction from among a first direction, a second direction, and bi-directions, and information regarding pixel values of the current block; determining the prediction direction in which the current block is to be predicted, based on the decoded information regarding the prediction direction, and determining a motion vector for predicting the current block in the determined prediction direction; and restoring the current block, based on the determined motion vector and the decoded information regarding the pixel values, wherein the first direction is a direction from a current picture to a previous picture, and the second direction is a direction from the current picture to a subsequent picture.

公开(公告)号：US09788013B2

公开(公告)日：2017-10-10

申请号：US15149931

申请日：2016-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-Mi Hong ,  Woo-Jin Han ,  Min-Su Cheon ,  Jianle Chen

IPC: H04N19/60 ,  G06F17/14 ,  H04N19/625 ,  H04N19/126 ,  H04N19/176

CPC classification number: H04N19/60 ,  G06F17/147 ,  H04N19/126 ,  H04N19/176 ,  H04N19/625

Abstract: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus are provided. The video encoding method includes producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a block which has a predetermined size; producing a transformed block by transforming the block having the predetermined size by using the fast transform matrix; and performing scaling with respect to the transformed block in order to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.

公开(公告)号：US09491474B2

公开(公告)日：2016-11-08

申请号：US15133844

申请日：2016-04-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy Lee ,  Woo-Jin Han ,  Il-Koo Kim

IPC: H04N19/157 ,  H04N19/184 ,  H04N19/117 ,  H04N19/82 ,  H04N19/172

CPC classification number: H04N19/146 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/182 ,  H04N19/184 ,  H04N19/51 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86 ,  H04N19/865

Abstract: A method of decoding video, the method including receiving and parsing a bitstream which includes encoded video; extracting encoded image data relating to a current picture, which image data is assigned to at least one maximum coding unit, information relating to a coded depth and an encoding mode for each of the at least one maximum coding unit, and filter coefficient information for performing loop filtering on the current picture, from the bitstream; decoding the encoded image data in units of the at least one maximum coding unit, based on the information relating to the coded depth and the encoding mode for each of the at least one maximum coding unit; and performing deblocking on the decoded image data relating to the current picture, and performing loop filtering on the deblocked data, based on continuous one-dimensional (1D) filtering.