公开(公告)号：US09591307B2

公开(公告)日：2017-03-07

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 ,  H04N19/119 ,  H04N19/172 ,  H04N19/96 ,  H04N19/14

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：US10694190B2

公开(公告)日：2020-06-23

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 ,  H04N19/167 ,  H04N19/182 ,  H04N19/119 ,  H04N19/176 ,  H04N19/433 ,  H04N19/129

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：US10313699B2

公开(公告)日：2019-06-04

申请号：US15519620

申请日：2015-10-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyung-ju Chun ,  Chan-sik Park ,  Ki-won Yoo ,  Jae-moon Kim

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/156 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/513

Abstract: A video decoding method includes obtaining a motion vector of a current block belonging to a first picture from a bitstream, performed by a first decoding unit; determining whether a reference block indicated by the motion vector is decoded, performed by the first decoding unit; and decoding the current block, based on whether the reference block is decoded. The reference block is included in a second picture decoded by a second decoding unit. The first picture and the second picture are decoded in parallel.

公开(公告)号：US10250879B2

公开(公告)日：2019-04-02

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: H04N7/12 ,  H04N19/117 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/157 ,  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：US10154263B2

公开(公告)日：2018-12-11

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

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.