公开(公告)号：US20180027255A1

公开(公告)日：2018-01-25

申请号：US15524463

申请日：2015-11-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/52 ,  H04N19/182 ,  H04N19/80 ,  H04N19/122 ,  H04N19/132 ,  H04N19/625 ,  H04N19/61 ,  H04N19/137 ,  H04N19/523

CPC classification number: H04N19/52 ,  H04N19/117 ,  H04N19/122 ,  H04N19/132 ,  H04N19/136 ,  H04N19/137 ,  H04N19/176 ,  H04N19/182 ,  H04N19/503 ,  H04N19/523 ,  H04N19/61 ,  H04N19/625 ,  H04N19/80

Abstract: Provided are a video encoding method and apparatus to which an interpolation filter is applied according to characteristics of an image for motion compensation, and a video decoding method and apparatus corresponding thereto. The video encoding method according to various embodiments includes determining a degree of change between neighboring samples of at least one integer pixel unit adjacent to a reference sample of an integer pixel unit of a current sample and the reference sample; determining an interpolation filter among interpolation filters having different frequency passbands and configured to produce reference samples of a sub-pixel unit to predict the current sample, based on the degree of change; determining a predicted sample value of the current sample by using a reference sample of a sub-pixel unit produced by applying the determined interpolation filter; and encoding a residual value between the predicted sample value and a sample value of the current sample.

公开(公告)号：US20170318289A1

公开(公告)日：2017-11-02

申请号：US15523429

申请日：2015-09-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho CHOI ,  Alexander ALSHIN ,  Elena ALSHINA

IPC: H04N19/117 ,  H04N19/139 ,  H04N19/174 ,  H04N19/86

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/174 ,  H04N19/176 ,  H04N19/192 ,  H04N19/439 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

Abstract: A video decoding method comprises when a first offset method is applied to a current slice comprising a current block, adjusting an offset with respect to the current block, based on a first offset parameter of the current block; when the first offset method is applied to the current slice, determining whether to apply a second offset method to the current slice; when the second offset method is applied to the current slice, determining a second offset parameter of the current block; and applying an offset based on the second offset parameter to the current block to which the offset based on the first offset parameter is applied, wherein the first offset parameter and the second offset parameter comprise offset values for the current block.

公开(公告)号：US20170310965A1

公开(公告)日：2017-10-26

申请号：US15647720

申请日：2017-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woo-jin HAN ,  Elena ALSHINA ,  Jung-hye MIN ,  Alexander ALSHIN ,  Il-koo KIM ,  Nikolay SHLYAKHOV ,  Tammy LEE ,  Sun-il LEE ,  Min-su CHEON ,  Jianle CHEN ,  Vadim SEREGIN ,  Yoon-mi HONG

IPC: H04N19/119 ,  H04N19/61 ,  H04N19/593 ,  H04N19/52 ,  H04N19/50 ,  H04N19/147 ,  H04N19/44 ,  H04N19/196 ,  H04N19/176 ,  H04N19/172 ,  H04N19/96 ,  H04N19/513

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method of encoding a video is provided, the method includes: determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and a plurality of prediction units and a plurality of transformation units respectively for prediction and transformation of the plurality of coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which pixels adjacent to the filtering belong from among the plurality of coding units, and transformation coefficient values of the pixels adjacent to the filtering boundary, and performing deblocking filtering on the filtering boundary based on the determined filtering strength.

公开(公告)号：US20170006289A1

公开(公告)日：2017-01-05

申请号：US15125852

申请日：2015-03-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/124 ,  H04N19/46 ,  H04N19/159 ,  H04N19/82 ,  H04N19/13 ,  H04N19/43 ,  H04N19/34 ,  H04N19/14

CPC classification number: H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/34 ,  H04N19/43 ,  H04N19/46 ,  H04N19/463 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

Abstract: Provided are 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 includes: parsing, from a bitstream, a scale parameter for scaling an offset of a current block; scaling an offset absolute value of the current block by using the scale parameter; determining an offset of the current block by using the scaled offset absolute value; and compensating for a sample value of a reconstructed pixel of the current block by using the offset of the current block.

Abstract translation: 提供了一种用于生成在原始图像和重建图像之间具有最小误差的重建图像的视频编码方法和装置以及视频解码方法和装置。 视频解码方法包括：从比特流解析缩放参数，缩放当前块的偏移量; 使用比例参数缩放当前块的偏移绝对值; 通过使用缩放的偏移绝对值来确定当前块的偏移; 以及通过使用当前块的偏移来补偿当前块的重构像素的采样值。

公开(公告)号：US20160173881A1

公开(公告)日：2016-06-16

申请号：US14902629

申请日：2014-07-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/136 ,  H04N19/176 ,  H04N19/30 ,  H04N19/187 ,  H04N19/44 ,  H04N19/80

CPC classification number: H04N19/136 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/44 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/96

Abstract: A video decoding method includes determining, from among a first sample and a second sample with different color components, at least one second sample that is used to correct a value of the first sample; determining a filter parameter set based on a band including the value of the first sample, wherein the band is from among a plurality of bands determined by dividing a total range of sample values into signaled intervals or predetermined intervals; and filtering a value of the at least one second sample by using the determined filter parameter set and correcting the value of the first sample by using a value obtained by the filtering, wherein the first sample is any one of a luma sample and a chroma sample, and the second sample is any one of the luma sample and the chroma sample that is not the first sample.

Abstract translation: 视频解码方法包括：从具有不同颜色分量的第一样本和第二样本中确定用于校正第一样本的值的至少一个第二样本; 基于包括第一样本的值的频带确定滤波器参数集，其中，所述频带来自通过将采样值的总范围除以信号的间隔或预定间隔而确定的多个频带; 以及通过使用所确定的滤波器参数集合对所述至少一个第二样本的值进行滤波，并且通过使用由所述滤波获得的值来校正所述第一样本的值，其中所述第一样本是亮度样本和色度样本中的任何一个 ，第二个样品是不是第一个样品的亮度样品和色度样品中的任何一个。

公开(公告)号：US20150350671A1

公开(公告)日：2015-12-03

申请号：US14759322

申请日：2014-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA

IPC: H04N19/577 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176 ,  H04N19/187 ,  H04N19/31 ,  H04N19/124 ,  H04N19/137

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/137 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/31

Abstract: Provided is a motion compensation method for encoding and decoding a scalable video. A first prediction value of pixels constituting a current block is acquired from a corresponding block of a base layer corresponding to the current block of an enhancement layer, a second prediction value of the pixels constituting the current block is acquired by using a block-unit bidirectional motion compensation result and a pixel-unit motion compensation result about the enhancement layer, and a prediction value of the pixels constituting the current block is acquired by using a weighted sum of the first prediction value and the second prediction value.

Abstract translation: 提供了一种用于对可伸缩视频进行编码和解码的运动补偿方法。 构成当前块的像素的第一预测值是从对应于增强层的当前块的基本层的对应块获取的，通过使用块单位双向获取构成当前块的像素的第二预测值 运动补偿结果和关于增强层的像素单位运动补偿结果，并且通过使用第一预测值和第二预测值的加权和来获取构成当前块的像素的预测值。

公开(公告)号：US20150341661A1

公开(公告)日：2015-11-26

申请号：US14759319

申请日：2014-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/59 ,  H04N19/82 ,  H04N19/117 ,  H04N19/186 ,  H04N19/187 ,  H04N19/182

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.

Abstract translation: 提供了一种确定上采样滤波器以根据用于可分级视频编码和解码的上采样比率精确地插值每个采样位置的采样值的方法。 用于可分级视频编码的上采样方法包括基于高分辨率图像和低分辨率图像之间的缩放因子来确定低分辨率图像的像素与高分辨率图像的像素之间的相移; 从包括对应于相移的滤波器系数组的滤波器系数数据中选择对应于所确定的相移的至少一个滤波器系数集; 通过使用所选择的至少一个滤波器系数集对低分辨率图像进行滤波来产生高分辨率图像; 以及生成包括通过对高分辨率图像执行编码而生成的高分辨率编码信息和指示所确定的相移的上采样滤波器信息的改进层比特流。

公开(公告)号：US20150189330A1

公开(公告)日：2015-07-02

申请号：US14641739

申请日：2015-03-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/86 ,  H04N19/91

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：US20150189315A1

公开(公告)日：2015-07-02

申请号：US14644623

申请日：2015-03-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/523 ,  H04N19/82 ,  H04N19/52

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。

公开(公告)号：US20150189292A1

公开(公告)日：2015-07-02

申请号：US14658940

申请日：2015-03-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA ,  Nikolay SHLYAKHOV

IPC: H04N19/182 ,  H04N19/117

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.