公开(公告)号：USRE47254E1

公开(公告)日：2019-02-19

申请号：US14849073

申请日：2015-09-09

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：US10075718B2

公开(公告)日：2018-09-11

申请号：US14641739

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

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：US09967572B2

公开(公告)日：2018-05-08

申请号：US15701022

申请日：2017-09-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N11/02 ,  H04N11/04 ,  H04N7/12 ,  H04N19/159 ,  H04N19/30 ,  H04N19/44 ,  H04N19/186 ,  H04N19/107 ,  H04N19/11 ,  H04N19/593 ,  H04N19/96 ,  H04N19/122 ,  H04N19/176 ,  H04N19/50 ,  H04N19/105 ,  H04N19/13 ,  H04N19/182 ,  H04N19/184

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 for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block.

公开(公告)号：US09961365B2

公开(公告)日：2018-05-01

申请号：US14759319

申请日：2014-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N7/12 ,  H04N11/02 ,  H04N19/59 ,  H04N19/182 ,  H04N19/117 ,  H04N19/186 ,  H04N19/82 ,  H04N19/30 ,  H04N19/187

CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/82

Abstract: Provided is a method of determining an up-sampling filter to accurately interpolate a sample value for each sampling position according to an up-sampling ratio for scalable video encoding and decoding. An up-sampling method for scalable video encoding includes determining a phase shift between a pixel of a low resolution image and a pixel of a high resolution image based on a scaling factor between the high resolution image and the low resolution image; selecting at least one filter coefficient set corresponding to the determined phase shift from filter coefficient data comprising filter coefficient sets corresponding to phase shifts; generating the high resolution image by performing filtering on the low resolution image by using the selected at least one filter coefficient set; and generating an improvement layer bitstream comprising high resolution encoding information generated by performing encoding on the high resolution image and up-sampling filter information indicating the determined phase shift.

公开(公告)号：US09888242B2

公开(公告)日：2018-02-06

申请号：US15385983

申请日：2016-12-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/122 ,  H04N19/124 ,  H04N19/18 ,  H04N19/625 ,  H04N19/115 ,  H04N19/60 ,  H04N19/126 ,  H04N19/184 ,  H04N19/44 ,  H04N19/42 ,  G06F17/14 ,  H04N19/146 ,  H04N19/176 ,  H04N19/34 ,  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：US09538195B2

公开(公告)日：2017-01-03

申请号：US14656404

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/117 ,  H04N19/463 ,  H04N19/14 ,  H04N19/182 ,  H04N19/82 ,  H04N19/96 ,  H04N19/186 ,  H04N19/65 ,  H04N19/136

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/65 ,  H04N19/82 ,  H04N19/96

Abstract: A video decoding method includes extracting offset mergence information of a current largest coding unit (LCU), the offset mergence information indicating whether to adopt a second offset parameter as a first offset parameter of the current LCU; reconstructing the first offset parameter of the current LCU based on the offset mergence information, the first offset parameter including an offset type, an offset value, and an offset class of the current LCU; determining whether the current LCU is an edge type or a band type, based on the offset type; determining an edge direction according to the edge type or a band range according to the band type, based on the offset class; determining a difference value between reconstructed pixels and original pixels included in the offset class, based on the offset value; and adjusting pixel values of reconstructed pixels based on the difference value.

公开(公告)号：US09538188B2

公开(公告)日：2017-01-03

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 ,  H04N19/176 ,  H04N19/61 ,  H04N19/107 ,  H04N19/109 ,  H04N19/136 ,  H04N19/146 ,  H04N19/182 ,  H04N19/19 ,  H04N19/503 ,  H04N19/513 ,  H04N19/57

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：US09525882B2

公开(公告)日：2016-12-20

申请号：US14656354

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/117 ,  H04N19/463 ,  H04N19/14 ,  H04N19/182 ,  H04N19/82 ,  H04N19/96 ,  H04N19/186 ,  H04N19/65 ,  H04N19/136

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/65 ,  H04N19/82 ,  H04N19/96

Abstract: A video decoding method includes extracting offset mergence information of a current largest coding unit (LCU), the offset mergence information indicating whether to adopt a second offset parameter as a first offset parameter of the current LCU; reconstructing the first offset parameter of the current LCU based on the offset mergence information, the first offset parameter including an offset type, an offset value, and an offset class of the current LCU; determining whether the current LCU is an edge type or a band type, based on the offset type; determining an edge direction according to the edge type or a band range according to the band type, based on the offset class; determining a difference value between reconstructed pixels and original pixels included in the offset class, based on the offset value; and adjusting pixel values of reconstructed pixels based on the difference value.

Abstract translation: 视频解码方法包括提取当前最大编码单元（LCU）的偏移合并信息，该偏移合并信息指示是否采用第二偏移参数作为当前LCU的第一偏移参数; 基于偏移合并信息重构当前LCU的第一偏移参数，第一偏移参数包括当前LCU的偏移类型，偏移值和偏移等级; 基于偏移类型确定当前LCU是边缘类型还是带类型; 基于偏移等级，根据边缘类型或根据频带类型的频带范围确定边缘方向; 基于所述偏移值来确定所述偏移类别中包括的重建像素与原始像素之间的差值; 以及基于所述差值来调整重构像素的像素值。

公开(公告)号：US09392285B2

公开(公告)日：2016-07-12

申请号：US14603307

申请日：2015-01-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/60 ,  H04N19/44 ,  H04N19/122 ,  H04N19/115 ,  H04N19/126 ,  H04N19/184 ,  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.

Abstract translation: 提供了一种在编码样本恢复期间调整编码输出数据的范围以调整位深度的视频编码方法，以及在解码处理的操作中基本上防止在输出数据中发生溢出的视频解码方法。 视频解码方法包括以接收到的比特流解码和恢复图像块的量化变换系数，通过对量化的变换系数执行逆量化来恢复变换系数，以及通过执行一维（1D）逆变换来恢复样本， 对量化变换系数进行反缩放。 变换系数和样本中的至少一个具有预定位深度或更小。

公开(公告)号：US09313522B2

公开(公告)日：2016-04-12

申请号：US14644652

申请日：2015-03-11

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.

Abstract translation: 使用基于变换的内插滤波器的子像素单位图像插值方法包括：基于由多个内插滤波器支持的区域中的子像素单位内插位置来选择，用于生成至少一个子像素单元 位于整数像素单位像素之间的像素值，来自多个内插滤波器的对称内插滤波器和非对称内插滤波器之一; 以及使用所选择的内插滤波器通过内插所述整数像素单位像素来生成所述至少一个子像素单位像素值。