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。

公开(公告)号：US09414074B2

公开(公告)日：2016-08-09

申请号：US14603297

申请日：2015-01-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/122 ,  H04N19/115 ,  H04N19/60 ,  H04N19/126 ,  H04N19/184 ,  H04N19/44 ,  H04N19/42 ,  G06F17/14 ,  H04N19/146 ,  H04N19/18 ,  H04N19/136 ,  H04N19/182

CPC classification number: H04N19/122 ,  G06F17/147 ,  H04N19/115 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/184 ,  H04N19/34 ,  H04N19/42 ,  H04N19/44 ,  H04N19/45 ,  H04N19/60 ,  H04N19/625

Abstract: Provided are a video encoding method of adjusting a range of encoded output data to adjust a bit depth during restoring of encoded samples, and a video decoding method of substantially preventing overflow from occurring in output data in operations of a decoding process. The video decoding method includes parsing and restoring quantized transformation coefficients in units of blocks of an image from a received bitstream, restoring transformation coefficients by performing inverse quantization on the quantized transformation coefficients, and restoring samples by performing one-dimensional (1D) inverse transformation and inverse scaling on the quantized transformation coefficients. At least one from among the transformation coefficients and the samples has a predetermined bit depth or less.

公开(公告)号：US09402079B2

公开(公告)日：2016-07-26

申请号：US14802651

申请日：2015-07-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N7/12 ,  H04N19/13 ,  H04N19/50 ,  H04N19/176 ,  H04N19/119 ,  H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/91 ,  H04N19/182 ,  H04N19/82 ,  H04N19/33 ,  H04N19/196

CPC classification number: H04N19/13 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/198 ,  H04N19/33 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency.

公开(公告)号：US09313520B2

公开(公告)日：2016-04-12

申请号：US14643766

申请日：2015-03-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/00 ,  H04N19/523 ,  G06T3/40 ,  H04N19/61 ,  H04N19/117 ,  H04N19/182 ,  H04N19/167 ,  H04N19/59 ,  H04N19/537 ,  H04N19/52 ,  H04N19/82

CPC classification number: H04N19/523 ,  G06T3/4007 ,  H04N19/117 ,  H04N19/167 ,  H04N19/182 ,  H04N19/52 ,  H04N19/537 ,  H04N19/59 ,  H04N19/61 ,  H04N19/82

Abstract: A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.

公开(公告)号：US20150237376A1

公开(公告)日：2015-08-20

申请号：US14432414

申请日：2013-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/65 ,  H04N19/30 ,  H04N19/46 ,  H04N19/132 ,  H04N19/174 ,  H04N19/172 ,  H04N19/14 ,  H04N19/182 ,  H04N19/50 ,  H04N19/187

CPC classification number: H04N19/65 ,  H04N19/117 ,  H04N19/132 ,  H04N19/14 ,  H04N19/172 ,  H04N19/174 ,  H04N19/182 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/50 ,  H04N19/59 ,  H04N19/82 ,  H04N19/86

Abstract: Provided are scalable video encoding and decoding methods and apparatuses for compensating for inter-layer prediction errors between different layer images by using sample adaptive offsets (SAOs). The scalable video decoding method includes: obtaining inter-layer SAO use information indicating whether to compensate for prediction errors according to inter-layer prediction between a base layer reconstructed image and an enhancement layer prediction image, and SAO parameters indicating a SAO type of the enhancement layer prediction image and an offset, from a received enhancement layer stream; determining the SAO type of the enhancement layer prediction image and offsets corresponding to the prediction errors classified according to categories, from the obtained SAO parameters; and generating an enhancement layer reconstructed image by using the enhancement layer prediction image compensated by the determined offsets by determining a category of a current sample for each pixel location of the enhancement layer prediction image.

Abstract translation: 提供了通过使用采样自适应偏移（SAO）来补偿不同层图像之间的层间预测误差的可扩展视频编码和解码方法和装置。 可扩展视频解码方法包括：根据基层重构图像和增强层预测图像之间的层间预测，获得指示是否补偿预测误差的层间SAO使用信息，以及指示SAO类型增强的SAO参数 层预测图像和来自接收到的增强层流的偏移; 根据获得的SAO参数确定增强层预测图像的SAO类型和与根据类别分类的预测误差相对应的偏移量; 以及通过使用由所确定的偏移补偿的增强层预测图像，通过确定增强层预测图像的每个像素位置的当前样本的类别来生成增强层重建图像。

公开(公告)号：US20150181214A1

公开(公告)日：2015-06-25

申请号：US14415454

申请日：2013-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Jeong-hoon Park

IPC: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: The present disclosure relates to signaling of sample adaptive offset (SAO) parameters determined to minimize an error between an original image and a reconstructed image in video encoding and decoding operations. An SAO decoding method includes obtaining context-encoded leftward SAO merge information and context-encoded upward SAO merge information from a bitstream of a largest coding unit (MCU); obtaining SAO on/off information context-encoded with respect to each color component, from the bitstream; if the SAO on/off information indicates to perform SAO operation, obtaining absolute offset value information for each SAO category bypass-encoded with respect to each color component, from the bitstream; and obtaining one of band position information and edge class information bypass-encoded with respect to each color component, from the bitstream.

Abstract translation: 本公开涉及确定为在视频编码和解码操作中最小化原始图像与重建图像之间的误差的样本自适应偏移（SAO）参数的信令。 SAO解码方法包括从最大编码单元（MCU）的比特流获得上下文编码的向左SAO合并信息和上下文编码的向上SAO合并信息; 从比特流获取关于每个颜色分量上下文编码的SAO开/关信息; 如果SAO开/关信息指示执行SAO操作，则从比特流获得关于每个颜色分量旁路编码的每个SAO类别的绝对偏移值信息; 并且从所述比特流获得关于每个颜色分量旁路编码的频带位置信息和边缘类信息之一。

公开(公告)号：US08964840B2

公开(公告)日：2015-02-24

申请号：US13969871

申请日：2013-08-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jung-hye Min ,  Elena Alshina ,  Woo-jin Han

IPC: H04N7/12 ,  H04N11/04 ,  H04N11/02 ,  H04N19/503 ,  H04N19/186 ,  H04N19/122 ,  H04N19/107 ,  H04N19/176 ,  H04N19/96 ,  H04N19/11 ,  H04N19/593

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/122 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/593 ,  H04N19/96

Abstract: A method and apparatus for determining an intra prediction mode of a coding unit. Candidate intra prediction modes of a chrominance component coding unit, which includes an intra prediction mode of a luminance component coding unit, are determined, and costs of the chrominance component coding unit according to the determined candidate intra prediction modes are compared to determine a minimum cost intra prediction mode to be the intra prediction mode of the chrominance component coding unit.

Abstract translation: 一种用于确定编码单元的帧内预测模式的方法和装置。 确定包括亮度分量编码单元的帧内预测模式的色度分量编码单元的候选帧内预测模式，并且比较根据确定的候选帧内预测模式的色度分量编码单元的成本，以确定最小成本 帧内预测模式为色度分量编码单元的帧内预测模式。