公开(公告)号：US20170310976A1

公开(公告)日：2017-10-26

申请号：US15513230

申请日：2015-09-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang-kwon NA ,  Sung-oh KIM ,  Jae-moon KIM ,  Ki-won YOO

IPC: H04N19/176 ,  H04N19/61 ,  H04N19/58 ,  H04N19/517 ,  H04N19/423 ,  H04N19/91 ,  H04N19/172

CPC classification number: H04N19/176 ,  H04N19/172 ,  H04N19/423 ,  H04N19/46 ,  H04N19/513 ,  H04N19/517 ,  H04N19/58 ,  H04N19/61 ,  H04N19/91

Abstract: Provided is a video decoding method for reconstructing an image, the video decoding method including: obtaining reference image data from a bitstream; determining an attribute of the reference image data as a long-term reference attribute or a short-term reference attribute, according to a frequency of referring to the reference image data by image data to be decoded; storing the reference image data in a memory by using the attribute of the reference image data; and decoding an image by using the reference image data stored in the memory.

公开(公告)号：US20170223352A1

公开(公告)日：2017-08-03

申请号：US15500756

申请日：2015-06-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung-dae KIM ,  Ki-won YOO ,  Jae-moon KIM ,  Sang-kwon NA

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/13

CPC classification number: H04N19/117 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82

Abstract: A video encoding apparatus comprises an encoder encoding input video; a decoder decoding video data, and a filter to compensate for a pixel value of the encoded video data. An adaptive loop filter (ALF) parameter predictor generates an ALF filter parameter using the decoded video data. The ALF filter parameter is applied to an ALF filter to compensate a current pixel by using a pixel adjacent to the current pixel and a filter coefficient with respect to the neighboring pixel; a sample adaptive offset (SAO) filter unit applied to the decoded video data compensates for a current pixel by using at least one of an edge offset and a band offset; an ALF filter unit applies the ALF filter parameter, the ALF filter to video data to which the SAO filter has been applied; and an entropy encoder performs entropy encoding on the ALF filter parameter.

公开(公告)号：US20180124412A1

公开(公告)日：2018-05-03

申请号：US15716995

申请日：2017-09-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang-kwon NA ,  Ki-won YOO ,  Doo-hyun KIM

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/182 ,  H04N19/167

Abstract: A processing apparatus has a processor including a first memory. The processor divides a frame in video content into a plurality of coding units (CUs), and encodes the plurality of CUs in a diagonal direction to generate an encoded frame, wherein when a first CU is encoded based on a first encoding type, the processor is further configured to load, from a second memory, a first partial region of a reference frame corresponding to first position information of the first CU to the first memory and encode the first CU based on the first partial region of the reference frame loaded from the second memory, and wherein, when the first CU is encoded based on a second encoding type, the processor is further configured to encode the first CU based on a first reference pixel value corresponding to the first position information of the first CU from the first memory.

公开(公告)号：US20170155922A1

公开(公告)日：2017-06-01

申请号：US15321988

申请日：2015-06-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-won YOO ,  Jae-moon KIM ,  Sang-kwon NA

IPC: H04N19/59 ,  H04N19/172 ,  H04N19/96 ,  H04N19/119 ,  H04N19/157

CPC classification number: H04N19/59 ,  H04N19/119 ,  H04N19/157 ,  H04N19/167 ,  H04N19/172 ,  H04N19/96

Abstract: Provided is a video encoding method including: performing padding outside an input image such that a size of the input image is a multiple of a maximum coding unit; when a current maximum coding unit includes a padding area generated via the padding, determining a coding unit by splitting the current maximum coding unit by using a boundary of the input image and the padding area; determining information indicating whether a coding unit included in the padding area includes a nonzero coefficient to be 0; and encoding a bitstream including the determined information.

公开(公告)号：US20170150165A1

公开(公告)日：2017-05-25

申请号：US15139842

申请日：2016-04-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang-kwon NA ,  Myung-ho KIM ,  Chan-sik PARK ,  Ki-won YOO ,  Chang-su HAN

IPC: H04N19/51 ,  H04N19/30 ,  H04N19/187 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/428 ,  H04N19/44

Abstract: A decoding apparatus and a decoding method thereof are provided. The decoding apparatus includes a memory configured to store a reference image frame of a first definition that is decoded from a bit stream. The decoding apparatus further includes a decoder configured to determine, form the bit stream, a motion vector of a current block of a current image frame of a second definition, correct a size of the motion vector and a location of the current block based on a scaling factor, load, from the memory, a reference block that is the corrected motion vector away from the corrected location of the current block in the reference image frame, and decode the current image frame based on the reference block.

公开(公告)号：US20170064335A1

公开(公告)日：2017-03-02

申请号：US15184300

申请日：2016-06-16

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Seoul National University R&DB Foundation

Inventor： Sang-kwon NA ,  Soo-ik CHAE ,  Ki-won YOO ,  Soon-woo CHOI ,  Wook-seok JEONG

IPC: H04N19/61 ,  H04N19/129 ,  H04N19/126

CPC classification number: H04N19/61 ,  H04N19/122 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176

Abstract: Provided is a method of encoding an image, the method including determining a scanning sequence for transforming one or more sub-blocks included in a transformation block to be identical to a sequence of quantizing the one or more sub-blocks; determining a sub-block for transformation from among the one or more sub-blocks according to the determined scanning sequence; and performing transformation by applying one or more transformation matrixes with respect to the sub-block for transformation.

Abstract translation: 提供了一种对图像进行编码的方法，该方法包括确定用于将包括在变换块中的一个或多个子块变换为与量化该一个或多个子块的序列相同的扫描序列; 根据所确定的扫描顺序确定从所述一个或多个子块中进行变换的子块; 并且通过对于用于变换的子块应用一个或多个变换矩阵来执行变换。

公开(公告)号：US20170064302A1

公开(公告)日：2017-03-02

申请号：US15184272

申请日：2016-06-16

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Seoul National University R&DB Foundation

Inventor： Sang-kwon NA ,  Soo-ik CHAE ,  Ki-won YOO ,  Soon-woo CHOI ,  Wook-seok JEONG

IPC: H04N19/124 ,  H04N19/567 ,  H04N19/147 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/44 ,  H04N19/567 ,  H04N19/61

Abstract: Provided is a video encoding method including: calculating a difference value between a rate-distortion (R-D) cost of a first coefficient level from among coefficient levels of a sub-block and an R-D cost of a second coefficient level adjacent to the first coefficient level by using a distortion difference calculated by using an integer of the first coefficient level and an integer of the second coefficient level and a rate variation between the first coefficient level and the second coefficient level; selecting one of the integer values of the first and second coefficient levels as a modified value of the first coefficient level based on the difference value; and outputting the modified value of the first coefficient level.

Abstract translation: 提供了一种视频编码方法，包括：从子块的系数级别中计算第一系数级的速率失真（RD）成本与第一系数级相邻的第二系数级的RD成本之间的差值 通过使用通过使用第一系数电平的整数和第二系数电平的整数以及第一系数电平和第二系数电平之间的速率变化来计算的失真差; 基于所述差值，将所述第一和第二系数电平的整数值之一选择为所述第一系数电平的修正值; 并输出第一系数电平的修正值。

公开(公告)号：US20150055698A1

公开(公告)日：2015-02-26

申请号：US14464942

申请日：2014-08-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang-kwon NA ,  Ki-won YOO

IPC: H04N19/11

CPC classification number: H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172 ,  H04N19/96

Abstract: Provided are a method and an apparatus for determining an intra prediction mode. The method includes: splitting a maximum coding unit into coding units of a first size; acquiring an edge direction of each of the coding units of the first size; grouping adjacent coding units of the first size based on uniformity of edge directions of the adjacent coding units of the first size; determining a size range of coding units to be applied to intra prediction on the intra prediction coding unit group; performing the intra prediction on the intra prediction coding unit group by using coding units having sizes included in the determined size range; and determining a coding unit for the intra prediction and an intra prediction mode of the coding unit by comparing costs according to the performed intra prediction on the coding units having the sizes included in the size range.

Abstract translation: 提供了一种用于确定帧内预测模式的方法和装置。 该方法包括：将最大编码单元分割为第一大小的编码单元; 获取第一尺寸的每个编码单元的边缘方向; 基于第一尺寸的相邻编码单元的边缘方向的均匀性来分组第一尺寸的相邻编码单元; 确定要在帧内预测编码单元组中应用于帧内预测的编码单元的大小范围; 通过使用包含在确定的尺寸范围内的尺寸的编码单元来对帧内预测编码单元组进行帧内预测; 以及通过根据所执行的帧内预测对具有包括在尺寸范围内的尺寸的编码单元进行比较来确定编码单元的帧内预测编码单元和帧内预测模式。

公开(公告)号：US20140328388A1

公开(公告)日：2014-11-06

申请号：US14336072

申请日：2014-07-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jae-moon KIM ,  Ki-won YOO ,  Jae-Hyun KIM ,  Kyo-hyuk LEE

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/139

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/577

Abstract: Provided are a method and apparatus for encoding a video and a method and apparatus for decoding a video. The method of encoding includes: determining, for a current block, bidirectional motion estimation information comprising an L0 motion vector, an L1 motion vector, an L0 reference vector, and an L1 reference picture by performing bidirectional motion estimation on the current block; determining whether to use the determined bidirectional motion estimation information as prediction information of the current block based on whether the L0 reference picture and the L1 reference picture are the same and based on a difference value between the L0 motion vector and the L1 motion vector; and in response to determining to use the determined bidirectional motion estimation information as the prediction information of the current block, encoding the determined bidirectional motion estimation information as the prediction information of the current block.

Abstract translation: 提供了一种用于对视频进行编码的方法和装置以及用于对视频进行解码的方法和装置。 编码方法包括：通过对当前块执行双向运动估计，为当前块确定包括L0运动矢量，L1运动矢量，L0参考矢量和L1参考图像的双向运动估计信息; 基于L0参考图像和L1参考图像是否相同并且基于L0运动矢量和L1运动矢量之间的差值，确定是否使用所确定的双向运动估计信息作为当前块的预测信息; 并且响应于确定使用所确定的双向运动估计信息作为当前块的预测信息，将所确定的双向运动估计信息编码为当前块的预测信息。