公开(公告)号：US20180176588A1

公开(公告)日：2018-06-21

申请号：US15126005

申请日：2015-03-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/30 ,  H04N19/105 ,  H04N19/186

CPC classification number: H04N19/30 ,  H04N19/105 ,  H04N19/186

Abstract: Provided is a video decoding method including obtaining, from a bitstream, upsampling phase set information indicating whether a phase of samples comprised in a current layer is adjusted; when the phase is adjusted according to the upsampling phase set information, obtaining a luma vertical phase difference, a luma horizontal phase difference, a chroma vertical phase difference, and a chroma horizontal phase difference from the bitstream; and determining a prediction picture of the current layer by upsampling a reference layer based on the luma vertical phase difference, the luma horizontal phase difference, the chroma vertical phase difference, and the chroma horizontal phase difference, wherein a phase of luma samples comprised in the prediction picture is adjusted according to the luma vertical phase difference and the luma horizontal phase difference, a phase of chroma samples comprised in the prediction picture is adjusted according to the chroma vertical phase difference and the chroma horizontal phase difference, and the luma vertical phase difference and the chroma vertical phase difference are determined according to a scanning scheme with respect to the reference layer.

公开(公告)号：US20180131964A1

公开(公告)日：2018-05-10

申请号：US15573180

申请日：2016-05-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Elena ALSHINA

IPC: H04N19/593 ,  H04N19/105

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/463 ,  H04N19/70 ,  H04N19/82

Abstract: A video decoding apparatus according to an embodiment may include: a receiver configured to receive a bitstream of an encoded video; a predictor configured to change a distribution of pixel values of neighboring reference pixels that are previously decoded, and generate a prediction block by performing intra prediction on a current block by using the neighboring reference pixels the distribution of the pixel values of which is changed; and a decoder configured to reconstruct the current block based on residual data obtained from the bitstream and the prediction block.

公开(公告)号：US20160337656A1

公开(公告)日：2016-11-17

申请号：US15221979

申请日：2016-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/463 ,  H04N19/44 ,  H04N19/137 ,  H04N19/176 ,  H04N19/182

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：US20160065974A1

公开(公告)日：2016-03-03

申请号：US14782441

申请日：2014-04-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Yong-jin CHO

IPC: H04N19/186 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N9/646 ,  H04N9/77 ,  H04N19/117 ,  H04N19/136 ,  H04N19/164 ,  H04N19/44 ,  H04N19/46

Abstract: A video decoding method includes receiving information about whether to correct a chroma sample, obtaining a correction value determined using a luma value in a range corresponding to a position of a determined chroma pixel, based on the received information, and correcting a chroma value using the obtained correction value.

Abstract translation: 视频解码方法包括接收关于是否校正色度样本的信息，根据接收到的信息获得使用与所确定的色度像素的位置相对应的范围内的亮度值确定的校正值，并使用 获得校正值。

公开(公告)号：US20160050423A1

公开(公告)日：2016-02-18

申请号：US14773588

申请日：2014-03-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/187 ,  H04N19/86 ,  H04N19/503 ,  H04N19/82 ,  H04N19/117 ,  H04N19/30

CPC classification number: H04N19/187 ,  H04N19/117 ,  H04N19/154 ,  H04N19/30 ,  H04N19/503 ,  H04N19/82 ,  H04N19/86

Abstract: Provided are scalable video encoding and decoding methods by using a de-noise filtering. The scalable video decoding method includes generating reconstructed base layer images from a base layer image stream; determining a reference picture list including at least one of a reconstructed base layer image corresponding to a current enhancement layer image, from among the reconstructed base layer images, and a de-noise reconstructed base layer image, from an enhancement layer image stream; and reconstructing the current enhancement layer image by using a reference image that is determined from the reference picture list.

Abstract translation: 提供了通过使用去噪声滤波的可缩放视频编码和解码方法。 可扩展视频解码方法包括从基本层图像流生成重建的基本层图像; 从增强层图像流中确定从所述重建的基本层图像中的至少一个对应于当前增强层图像的重构的基本层图像和去噪重建的基本层图像的参考图像列表; 以及通过使用从参考图像列表确定的参考图像来重构当前增强层图像。

公开(公告)号：US20150237359A1

公开(公告)日：2015-08-20

申请号：US14632176

申请日：2015-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN ,  Nikolay SHLYAKHOV ,  Yoon-mi HONG

IPC: H04N19/43 ,  H04N19/523 ,  H04N19/186 ,  H04N19/82 ,  H04N19/117 ,  H04N19/182 ,  H04N19/59

CPC classification number: H04N19/86 ,  G06F17/17 ,  G06F17/175 ,  G06T3/4007 ,  G06T5/002 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186 ,  H04N19/42 ,  H04N19/43 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/635 ,  H04N19/80 ,  H04N19/82

Abstract: Provided are a method of interpolating an image by determining interpolation filter coefficients, and an apparatus for performing the same. The method includes: differently selecting an interpolation filter, from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, based on a sub-pel-unit interpolation location and a smoothness; and generating the at least one sub-pel-unit pixel value by interpolating, using the selected interpolation filter, pixel values of the integer-pel-unit pixels.

公开(公告)号：US20150208089A1

公开(公告)日：2015-07-23

申请号：US14627976

申请日：2015-02-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/577 ,  H04N19/174 ,  H04N19/18 ,  H04N19/122 ,  H04N19/159

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：US20150189296A1

公开(公告)日：2015-07-02

申请号：US14656404

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/65

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：US20150172707A1

公开(公告)日：2015-06-18

申请号：US14627846

申请日：2015-02-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/57 ,  H04N19/176

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：US20150172699A1

公开(公告)日：2015-06-18

申请号：US14630195

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

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.

Abstract translation: 提供了一种用于对视频进行编码和解码的方法和装置。 编码视频的方法包括：基于要编码的当前预测单元的大小来确定是否要使用单向运动估计模式和双向运动估计模式，对当前预测执行运动估计和运动补偿 根据确定是否使用单向运动估计模式和双向运动估计模式来确定当前预测单元的最佳运动估计模式;基于通过执行所述单向运动估计模式获得的当前预测单元的编码成本， 运动估计和运动补偿，以及基于当前预测单元的大小编码指示所确定的最佳运动估计模式的信息。