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。