公开(公告)号：US09307263B2

公开(公告)日：2016-04-05

申请号：US14678588

申请日：2015-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao ,  Jung-hye Min

IPC: H04N7/18 ,  H04N19/60 ,  H04N19/91 ,  H04N19/176 ,  H04N19/186 ,  H04N19/18

CPC classification number: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/91

Abstract: Provided are a method and apparatus for determining a context model for entropy encoding and decoding of a transformation coefficient. According to the method and apparatus, a context set index ctxset is obtained based on color component information of a transformation unit, a location of a current subset, and whether there is a significant transformation coefficient having a value greater than a first critical value in a previous subset, and a context offset c1 is obtained based on a length of a previous transformation coefficient having consecutive 1s. Also, a context index ctxids for entropy encoding and decoding of a first critical value flag is determined based on the obtained context set index and the context offset.

公开(公告)号：US20150043639A1

公开(公告)日：2015-02-12

申请号：US14387059

申请日：2013-03-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy Lee ,  Byeong-doo Choi ,  Jung-hye Min ,  Yin-ji Piao

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/119 ,  H04N19/50 ,  H04N19/61 ,  H04N19/96

Abstract: Provided are scalable video encoding and decoding methods and apparatuses. A scalable video encoding method includes: encoding a lower layer image according to coding units having a tree structure, the coding units hierarchically split from maximum coding units of an image; determining scalable coding modes for performing scalable encoding on a higher layer image based on the coding units having the tree structure by referring to the lower layer image; predicting and encoding the higher layer image by referring to encoding information of the lower layer image based on the determined scalable coding modes; and outputting coding modes, predicted values of the lower layer image, and the determined scalable coding modes of the higher layer image based on the determined scalable coding modes.

Abstract translation: 提供可扩展的视频编码和解码方法和装置。 可分级视频编码方法包括：根据具有树结构的编码单元编码下层图像，从图像的最大编码单元分层划分的编码单元; 基于具有参考下层图像的树结构的编码单元，确定用于对较高层图像执行可分级编码的可分级编码模式; 基于所确定的可伸缩编码模式，通过参考下层图像的编码信息来预测和编码较高层图像; 以及基于所确定的可缩放编码模式，输出编码模式，下层图像的预测值和确定的可分级编码模式。

公开(公告)号：US12212738B2

公开(公告)日：2025-01-28

申请号：US18203777

申请日：2023-05-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao ,  Jie Chen ,  Chan-yul Kim

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/129 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/52 ,  H04N19/583 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/88 ,  H04N19/96

Abstract: Provided is a video decoding method including obtaining, from a bitstream, split information indicating whether a current block is to be split; when the split information does not indicate that the current block is to be split, decoding the current block according to encoding information about the current block; and when the split information indicates that the current block is to be split, splitting the current block into at least two lower blocks, obtaining encoding order information indicating an encoding order of the at least two lower blocks of the current block from the bitstream, determining a decoding order of the at least two lower blocks according to the encoding order information, and decoding the at least two lower blocks according to the decoding order.

公开(公告)号：US11589070B2

公开(公告)日：2023-02-21

申请号：US16634400

申请日：2018-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-young Lee ,  Yin-ji Piao ,  Woong-il Choi

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/176

Abstract: A method of decoding a motion vector includes: determining at least one prediction motion vector (PMV) candidate block used to determine a PMV of a current block; determining an availability of a motion vector of the at least one PMV candidate block; when there is a PMV candidate block determined to be unavailable, determining the PMV of the current block by using a default motion vector (MV); and obtaining a motion vector of the current block based on the determined PMV.

公开(公告)号：US11303920B2

公开(公告)日：2022-04-12

申请号：US16622157

申请日：2018-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-young Lee ,  Seung-soo Jeong ,  Woong-il Choi ,  Anish Tamse ,  Yin-ji Piao

IPC: H04N19/52 ,  H04N19/44

Abstract: A method of decoding a motion vector includes: obtaining information indicating a motion vector resolution (MVR) of a current block from a bitstream; selecting one candidate block from among at least one candidate block, based on the MVR of the current block; and obtaining a motion vector of the current block corresponding to the MVR, by using a motion vector of the determined one candidate block as a prediction motion vector of the current block.

公开(公告)号：US10742973B2

公开(公告)日：2020-08-11

申请号：US15572608

申请日：2016-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  In-kwon Choi ,  Jin-young Lee ,  Chan-yul Kim ,  Yin-ji Piao

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/119 ,  H04N19/105 ,  H04N19/14 ,  H04N19/17 ,  H04N19/122 ,  H04N19/132 ,  H04N19/184 ,  H04N19/593 ,  H04N19/463

Abstract: Provided is a video decoding method including: obtaining mode information of a contour for determining at least one segment from a current block; determining whether first coordinates and second coordinates of the contour are derivable from a neighboring block of the current block, based on the mode information of the contour; when the first and second coordinates of the contour are derivable from the neighboring block of the current block, determining the at least one segment from the current block based on the first and second coordinates of the contour derived from the neighboring block of the current block; and performing prediction with respect to the determined at least one segment.

公开(公告)号：US10728547B2

公开(公告)日：2020-07-28

申请号：US15180649

申请日：2016-06-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sun-il Lee ,  Elena Alshina ,  Yin-ji Piao

IPC: H04N19/117 ,  H04N19/463 ,  H04N19/44 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

Abstract: Provided is a video decoding method for signaling of sample adaptive offset (SAO) parameters, the video decoding method including obtaining, from a bitstream, position information of each of a plurality of bandgroups with respect to a current block comprised in a video; obtaining, from the bitstream, offsets with respect to bands comprised in each of the plurality of bandgroups; determining the plurality of bandgroups so as to compensate for a pixel sample value of the current block, based on the position information of each of the plurality of bandgroups; and compensating for a sample value of a reconstructed pixel comprised in the current block, by using the obtained offsets. In this regard, each of the plurality of determined bandgroups comprises at least one band.

公开(公告)号：US10356425B2

公开(公告)日：2019-07-16

申请号：US15588167

申请日：2017-05-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye Min ,  Elena Alshina ,  Mikhail Mishurovskiy ,  Yin-ji Piao

IPC: H04N19/176 ,  H04N19/107 ,  H04N19/117 ,  H04N19/167

Abstract: Provided is an image encoding method including determining at least one sample value related to a first block, based on sample values of previously-reconstructed reference samples; determining at least one pattern in which samples of the first block are to be arranged; generating one or more candidate prediction blocks for the first block, based on the at least one sample value and the at least one pattern; and determining prediction values of the samples of the first block, based on one of the one or more candidate prediction blocks.

公开(公告)号：US09532072B2

公开(公告)日：2016-12-27

申请号：US14678637

申请日：2015-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao ,  Jung-hye Min

IPC: H04N7/18 ,  H04N19/60 ,  H04N19/91 ,  H04N19/176 ,  H04N19/186 ,  H04N19/18

CPC classification number: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/91

Abstract: Provided are a method and apparatus for determining a context model for entropy encoding and decoding of a transformation coefficient. According to the method and apparatus, a context set index ctxset is obtained based on color component information of a transformation unit, a location of a current subset, and whether there is a significant transformation coefficient having a value greater than a first critical value in a previous subset, and a context offset c1 is obtained based on a length of a previous transformation coefficient having consecutive 1s. Also, a context index ctxids for entropy encoding and decoding of a first critical value flag is determined based on the obtained context set index and the context offset.

Abstract translation: 提供一种用于确定变换系数的熵编码和解码的上下文模型的方法和装置。 根据该方法和装置，基于变换单元的颜色分量信息，当前子集的位置以及是否存在具有大于第一临界值的值的显着变换系数来获得上下文集索引ctxset 前一子集，并且基于具有连续1s的先前变换系数的长度获得上下文偏移量c1。 此外，基于获得的上下文集索引和上下文偏移来确定用于第一临界值标志的熵编码和解码的上下文索引ctxid。

公开(公告)号：US09503752B2

公开(公告)日：2016-11-22

申请号：US14678621

申请日：2015-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao ,  Jung-hye Min

IPC: H04N7/18 ,  H04N19/60 ,  H04N19/91 ,  H04N19/176 ,  H04N19/186 ,  H04N19/18

CPC classification number: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/91

Abstract: Provided are a method and apparatus for determining a context model for entropy encoding and decoding of a transformation coefficient. According to the method and apparatus, a context set index ctxset is obtained based on color component information of a transformation unit, a location of a current subset, and whether there is a significant transformation coefficient having a value greater than a first critical value in a previous subset, and a context offset c1 is obtained based on a length of a previous transformation coefficient having consecutive 1s. Also, a context index ctxids for entropy encoding and decoding of a first critical value flag is determined based on the obtained context set index and the context offset.