公开(公告)号：US20150172656A1

公开(公告)日：2015-06-18

申请号：US14630170

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN

IPC: H04N19/105 ,  H04N19/503

CPC classification number: H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/182 ,  H04N19/19 ,  H04N19/503 ,  H04N19/513 ,  H04N19/523 ,  H04N19/57 ,  H04N19/61

Abstract: A method and apparatus for encoding and decoding a video are provided. The method of encoding the video includes: determining whether a unidirectional motion estimation mode and a bidirectional motion estimation mode are to be used based on a size of a current prediction unit to be encoded, performing the motion estimation and the motion compensation on the current prediction unit according to the determining of whether the unidirectional motion estimation mode and the bidirectional motion estimation mode are to be used, determining an optimum motion estimation mode of the current prediction unit based on an encoding cost of the current prediction unit obtained through the performing of the motion estimation and the motion compensation, and encoding information indicating the determined optimum motion estimation mode based on the size of the current prediction unit.

公开(公告)号：US20150163516A1

公开(公告)日：2015-06-11

申请号：US14620432

申请日：2015-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/625 ,  H04N19/189 ,  H04N19/44

CPC classification number: H04N19/463 ,  G06T5/001 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/189 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/85 ,  H04N19/89 ,  H04N19/90

Abstract: A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.

公开(公告)号：US20150163510A1

公开(公告)日：2015-06-11

申请号：US14627860

申请日：2015-02-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chan-yul KIM ,  Tammy LEE ,  Elena ALSHINA

IPC: H04N19/577 ,  H04N19/573 ,  H04N19/513

CPC classification number: H04N19/577 ,  H04N19/103 ,  H04N19/105 ,  H04N19/122 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/521 ,  H04N19/57 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70 ,  H04N19/96

Abstract: A motion prediction method includes determining, when a current slice is a B slice, a reference picture list to be used with respect to a current prediction unit from among prediction units included in a coding unit, and outputting, when a size of the current prediction unit is 4×8 or 8×4, inter-prediction index information of the current prediction unit indicating the reference picture list from among an L0 list and an L1 list, and when the size of the current prediction unit is not 4×8 or 8×4, the inter-prediction index information of the current prediction unit indicating the reference picture list from among the L0 list, the L1 list, and a bi-prediction list.

公开(公告)号：US20150163502A1

公开(公告)日：2015-06-11

申请号：US14620413

申请日：2015-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/44 ,  H04N19/85 ,  H04N19/137

CPC classification number: H04N19/463 ,  G06T5/001 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/189 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/85 ,  H04N19/89 ,  H04N19/90

Abstract: A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.

公开(公告)号：US20150163491A1

公开(公告)日：2015-06-11

申请号：US14627042

申请日：2015-02-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Nikolay SHLYAKHOV

IPC: H04N19/136 ,  H04N19/137 ,  G06K9/46 ,  H04N19/44

CPC classification number: H04N19/65 ,  G06K9/4604 ,  H04N19/117 ,  H04N19/136 ,  H04N19/137 ,  H04N19/17 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/40 ,  H04N19/44 ,  H04N19/463 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

Abstract: Provided are a method and apparatus of encoding a video by compensating for a pixel value and a method and apparatus of decoding a video by compensating for a pixel value. The method of encoding the video includes: encoding image data; decoding the encoded image data and generating a restored image by performing loop filtering on the decoded image data; determining a compensation value corresponding to errors between a predetermined group restored pixels in the restored image and corresponding original pixels, and a pixel group including a restored pixel to be compensated for by using the compensation value; and encoding the compensation value and transmitting the encoded compensation value and a bitstream of the encoded image data.

Abstract translation: 提供了通过补偿像素值对视频进行编码的方法和装置，以及通过补偿像素值来解码视频的方法和装置。 视频编码方法包括：编码图像数据; 对编码图像数据进行解码并通过对解码图像数据执行循环滤波来生成恢复图像; 确定对应于恢复图像中的预定组恢复像素与相应原始像素之间的误差的补偿值，以及包括通过使用补偿值补偿的恢复像素的像素组; 并且对所述补偿值进行编码，并且发送编码的补偿值和编码图像数据的比特流。

公开(公告)号：US20140198996A1

公开(公告)日：2014-07-17

申请号：US14218494

申请日：2014-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Nikolay SHLYAKHOV ,  Byeong-doo CHOI ,  Yoon-mi HONG ,  Woo-jin HAN ,  Tammy LEE

IPC: G06T3/40

CPC classification number: G06T3/4007 ,  G06F17/175 ,  H04N7/014 ,  H04N19/117 ,  H04N19/182 ,  H04N19/30 ,  H04N19/48 ,  H04N19/523 ,  H04N19/59 ,  H04N19/80

Abstract: Provided are a method and apparatus for interpolating an image. The method includes: selecting a first filter, from among a plurality of different filters, for interpolating between pixel values of integer pixel units, according to an interpolation location; and generating at least one pixel value of at least one fractional pixel unit by interpolating between the pixel values of the integer pixel units by using the selected first filter.

Abstract translation: 提供了一种用于内插图像的方法和装置。 该方法包括：根据插值位置，从多个不同滤波器中选择第一滤波器，用于在整数像素单元的像素值之间进行内插; 以及通过使用所选择的第一滤波器在整数像素单元的像素值之间进行内插来生成至少一个分数像素单元的至少一个像素值。

公开(公告)号：US20130279580A1

公开(公告)日：2013-10-24

申请号：US13920711

申请日：2013-06-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander Alshin ,  Vadim Seregin

IPC: H04N7/50

CPC classification number: H04N19/625 ,  H04N19/119 ,  H04N19/122 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

Abstract: An image encoding method includes generating a first frequency coefficient matrix by transforming a predetermined block to a frequency domain; determining whether the first frequency coefficient matrix includes coefficients whose absolute values are greater than a predetermined value; generating a second frequency coefficient matrix by selectively partially switching at least one of rows and columns of the first frequency coefficient matrix according to an angle parameter based on a determination result; and selectively encoding the second frequency coefficient matrix based on the determination result.

Abstract translation: 图像编码方法包括：通过将预定块变换为频域来生成第一频率系数矩阵; 确定第一频率系数矩阵是否包括其绝对值大于预定值的系数; 通过基于确定结果，根据角度参数选择性地部分地切换第一频率系数矩阵的行和列中的至少一个来产生第二频率系数矩阵; 以及基于所述确定结果选择性地编码所述第二频率系数矩阵。

公开(公告)号：US20240292014A1

公开(公告)日：2024-08-29

申请号：US18656205

申请日：2024-05-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho CHOI ,  Min-soo PARK ,  Elena ALSHINA

IPC: H04N19/44 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/45 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A method and apparatus for performing transformation and inverse transformation on a current block by using multi-core transform kernels in video encoding and decoding processes. A video decoding method may include obtaining, from a bitstream, multi-core transformation information indicating whether multi-core transformation kernels are to be used according to a size of a current block; obtaining horizontal transform kernel information and vertical transform kernel information from the bitstream when the multi-core transformation kernels are used according to the multi-core transformation information; determining a horizontal transform kernel for the current block according to the horizontal transform kernel information; determining a vertical transform kernel for the current block according to the vertical transform kernel information; and performing inverse transformation on the current block by using the horizontal transform kernel and the vertical transform kernel.

公开(公告)号：US20230247201A1

公开(公告)日：2023-08-03

申请号：US18194817

申请日：2023-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Mikhail Mishurovskiy ,  Alexander Alshin

IPC: H04N19/124 ,  H04N19/122 ,  H04N19/182 ,  H04N19/91 ,  H04N19/44 ,  H04N19/61 ,  H04N19/126 ,  H04N19/70 ,  H04N19/137 ,  H04N19/51 ,  H04N19/194 ,  H04N19/11 ,  H04N19/109 ,  H04N19/18 ,  H04N19/537 ,  H04N19/46 ,  H04N19/593 ,  H04N19/63 ,  H04N19/13 ,  H04N19/436 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/57

CPC classification number: H04N19/124 ,  H04N19/122 ,  H04N19/182 ,  H04N19/91 ,  H04N19/44 ,  H04N19/61 ,  H04N19/126 ,  H04N19/70 ,  H04N19/137 ,  H04N19/51 ,  H04N19/194 ,  H04N19/11 ,  H04N19/109 ,  H04N19/18 ,  H04N19/537 ,  H04N19/46 ,  H04N19/593 ,  H04N19/63 ,  H04N19/13 ,  H04N19/436 ,  H04N19/139 ,  H04N19/176 ,  H04N19/45 ,  H04N19/513 ,  H04N19/57

Abstract: An image decoding method and apparatus according to an embodiment may extract, from a bitstream, a quantization coefficient generated through core transformation, secondary transformation, and quantization; generate an inverse-quantization coefficient by performing inverse quantization on the quantization coefficient; generate a secondary inverse-transformation coefficient by performing secondary inverse-transformation on a low frequency component of the inverse-quantization coefficient, the secondary inverse-transformation corresponding to the secondary transformation; and perform core inverse-transformation on the secondary inverse-transformation coefficient, the core inverse-transformation corresponding to the core transformation.

公开(公告)号：US20230156216A1

公开(公告)日：2023-05-18

申请号：US18151266

申请日：2023-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176

Abstract: Provided is a video decoding method including determining a displacement vector per unit time of pixels of a current block in a horizontal direction or a vertical direction, the pixels including a pixel adjacent to an inside of a boundary of the current block, by using values about reference pixels included in a first reference block and a second reference block, without using a stored value about a pixel located outside boundaries of the first reference block and the second reference block; and obtaining a prediction block of the current block by performing block-unit motion compensation and pixel group unit motion compensation on the current block by using a gradient value in the horizontal direction or the vertical direction of a first corresponding reference pixel in the first reference block which corresponds to a current pixel included in a current pixel group in the current block, a gradient value in the horizontal direction or the vertical direction of a second corresponding reference pixel in the second reference block which corresponds to the current pixel, a pixel value of the first corresponding reference pixel, a pixel value of the second corresponding reference pixel, and a displacement vector per unit time of the current pixel in the horizontal direction or the vertical direction. In this regard, the current pixel group may include at least one pixel.