公开(公告)号：US20150189290A1

公开(公告)日：2015-07-02

申请号：US14656377

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/176 ,  H04N19/136

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.

公开(公告)号：US20150181252A1

公开(公告)日：2015-06-25

申请号：US14641722

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：US20150016525A1

公开(公告)日：2015-01-15

申请号：US14501769

申请日：2014-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Vadim SEREGIN ,  Nikolay SHLYAKHOV ,  Maxim KOROTEEV

IPC: H04N19/196 ,  H04N19/50

CPC classification number: H04N19/13 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/198 ,  H04N19/33 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency.

Abstract translation: 视频编码方法和装置以及视频解码方法和装置。 在视频编码方法中，产生要编码的当前编码单元的第一预测编码单元，通过使用第一预测编码单元的每个像素来改变第一预测编码单元的每个像素的值来产生第二预测编码单元 第一预测编码单元和每个像素的至少一个相邻像素，并且对当前编码单元和第二预测编码单元之间的差进行编码，从而提高视频预测效率。

公开(公告)号：US20130083850A1

公开(公告)日：2013-04-04

申请号：US13686635

申请日：2012-11-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Vadim SEREGIN ,  Nikolay SHLYAKHOV ,  Maxim KOROTEEV

IPC: H04N7/32

CPC classification number: H04N19/13 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/198 ,  H04N19/33 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency.