公开(公告)号：US10602188B2

公开(公告)日：2020-03-24

申请号：US15575717

申请日：2016-06-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander Alshin ,  Mikhail Mishurovskiy

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/70 ,  H04N19/176 ,  H04N19/159 ,  H04N19/577 ,  H04N19/109 ,  H04N19/44 ,  H04N19/52 ,  H04N19/182 ,  H04N19/139

Abstract: Provided are image encoding and decoding methods and apparatuses using weighted bi-prediction. The image decoding method and apparatus according to one embodiment obtain one or more prefixes including a first counter value indicating the number of additional syntax elements subsequent to main syntax elements from a received bitstream, obtain the additional syntax elements including weight information and information about whether to perform weighted bi-prediction on prediction units separated for predicting a current block, based on the one or more prefixes, and generate a prediction block including a prediction value, based on the main syntax elements and the additional syntax elements.

公开(公告)号：US10432945B2

公开(公告)日：2019-10-01

申请号：US15524327

申请日：2015-11-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander Alshin ,  Elena Alshina

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/149 ,  H04N19/50 ,  H04N19/13 ,  H04N19/21 ,  H04N19/34 ,  H04N19/33

Abstract: A probably update method used in context-based adaptive binary arithmetic coding (CABAC) is disclosed. The probably update method for binary arithmetic decoding obtains an autocorrelation value of each bin by using values of received bins, determines at least one scaling factor used to update a probability of a binary value based on the autocorrelation value, and updates a probability used in context-based adaptive binary arithmetic decoding by using the determined at least one scaling factor.

公开(公告)号：USRE47445E1

公开(公告)日：2019-06-18

申请号：US14927096

申请日：2015-10-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Vadim Seregin ,  Nikolay Shlyakhov

IPC: H04N7/12 ,  H04N19/85 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/122 ,  H04N19/61 ,  H04N19/11 ,  H04N19/105 ,  H04N19/134

Abstract: Disclosed are a video encoding method and apparatus and a video decoding method and apparatus. The method of encoding video includes: producing a first predicted coding unit of a current coding unit, which is to be encoded; determining whether the current coding unit comprises a portion located outside a boundary of a current picture; and producing a second predicted coding unit is produced by changing a value of pixels of the first predicted coding unit by using the pixels of the first predicted coding unit and neighboring pixels of the pixels when the current coding unit does not include a portion located outside a boundary of the current picture. Accordingly, a residual block that is the difference between the current encoding unit and the second predicted encoding unit, can be encoded, thereby improving video prediction efficiency.

公开(公告)号：US10171821B2

公开(公告)日：2019-01-01

申请号：US14905525

申请日：2014-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Chan-yul Kim ,  Alexander Alshin

IPC: H04N19/187 ,  H04N19/44 ,  H04N19/117 ,  H04N19/159 ,  H04N19/33 ,  H04N19/59 ,  H04N19/105 ,  H04N19/137 ,  H04N19/593 ,  H04N19/80 ,  H04N19/463

Abstract: A video encoding method including determining a phase shift between pixels of an enhancement layer image and a reference layer image, according to a scaling factor between the enhancement layer image and the reference layer image and a color format of the enhancement layer; selecting at least one filter coefficient set corresponding to the phase shift, from filter coefficient data including filter coefficient sets; generating an up-sampled reference layer image by extending a resolution of the reference layer image according to the scaling factor by performing interpolation filtering on the reference layer image by using the filter coefficient set; obtaining a prediction error between the up-sampled reference layer image and the enhancement layer image; generating an enhancement layer bitstream including the prediction error and a scalable codec; and generating a base layer bitstream by encoding the base layer images.

公开(公告)号：US09826235B2

公开(公告)日：2017-11-21

申请号：US14641722

申请日：2015-03-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/13 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/174 ,  H04N19/82 ,  H04N19/157 ,  H04N19/44 ,  H04N19/86 ,  H04N19/91 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46

CPC classification number: H04N19/13 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: A video encoding method and apparatus, and a video decoding method and apparatus for generating a reconstructed image having a minimized error between an original image and the reconstructed image. The video decoding method accompanied by a sample adaptive offset (SAO) adjustment, the method includes: obtaining 5 slice SAO parameters with respect to a current slice from a slice header of a received bitstream; obtaining luma SAO use information for a luma component of the current slice and chroma SAO use information for chroma components thereof from among the slice SAO parameters; determining whether to perform a SAO operation on the luma component of 10 the current slice based on the obtained luma SAO use information; and equally determining whether to perform the SAO adjustment on a first chroma component and a second chroma component of the current slice based on the obtained chroma SAO use information.

公开(公告)号：US09807393B2

公开(公告)日：2017-10-31

申请号：US14641709

申请日：2015-03-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/13 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/174 ,  H04N19/82 ,  H04N19/157 ,  H04N19/44 ,  H04N19/86 ,  H04N19/91 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46

CPC classification number: H04N19/13 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: A video encoding method and apparatus, and a video decoding method and apparatus for generating a reconstructed image having a minimized error between an original image and the reconstructed image. The video decoding method accompanied by a sample adaptive offset (SAO) adjustment, the method includes: obtaining 5 slice SAO parameters with respect to a current slice from a slice header of a received bitstream; obtaining luma SAO use information for a luma component of the current slice and chroma SAO use information for chroma components thereof from among the slice SAO parameters; determining whether to perform a SAO operation on the luma component of 10 the current slice based on the obtained luma SAO use information; and equally determining whether to perform the SAO adjustment on a first chroma component and a second chroma component of the current slice based on the obtained chroma SAO use information.

公开(公告)号：US09547886B2

公开(公告)日：2017-01-17

申请号：US14636805

申请日：2015-03-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Nikolay Shlyakhov ,  Byeong-doo Choi ,  Yoon-mi Hong ,  Woo-jin Han ,  Tammy Lee

IPC: G06K9/32 ,  G06T3/40 ,  G06F17/17 ,  H04N19/48 ,  H04N19/80 ,  H04N19/523 ,  H04N19/59 ,  H04N19/117 ,  H04N19/182 ,  H04N19/30 ,  H04N7/01

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：US09462288B2

公开(公告)日：2016-10-04

申请号：US14603097

申请日：2015-01-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/14 ,  H04N19/50 ,  H04N19/44 ,  H04N19/117 ,  H04N19/186 ,  H04N19/182 ,  H04N19/85 ,  H04N19/463 ,  H04N19/176 ,  H04N19/137 ,  H04N19/89 ,  H04N19/90 ,  G06T5/00 ,  H04N19/189 ,  H04N19/625

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：US09438922B2

公开(公告)日：2016-09-06

申请号：US14620413

申请日：2015-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/44 ,  H04N19/50 ,  H04N19/117 ,  H04N19/14 ,  H04N19/186 ,  H04N19/182 ,  H04N19/85 ,  H04N19/463 ,  H04N19/176 ,  H04N19/137 ,  H04N19/89 ,  H04N19/90 ,  G06T5/00 ,  H04N19/189 ,  H04N19/625

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：US09436975B2

公开(公告)日：2016-09-06

申请号：US14636882

申请日：2015-03-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Nikolay Shlyakhov ,  Byeong-doo Choi ,  Yoon-mi Hong ,  Woo-jin Han ,  Tammy Lee

IPC: G06K9/32 ,  G06T3/40 ,  H04N19/48 ,  H04N19/80 ,  H04N19/523 ,  H04N19/59 ,  H04N19/117 ,  H04N19/182 ,  H04N7/01 ,  H04N19/30

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。