公开(公告)号：US10404982B2

公开(公告)日：2019-09-03

申请号：US15524829

申请日：2015-11-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin

IPC: H04N19/119 ,  H04N19/102 ,  H04N19/124 ,  H04N19/44 ,  H04N19/61

Abstract: A video decoding apparatus includes: a splitter configured to split an image into at least one block; a predictor configured to predict a current sample by using at least one of a value obtained by applying a first weight to a first sample predicted earlier than the current sample in a current block and being adjacent to the current sample in a horizontal direction and a value obtained by applying a first weight to a second sample predicted earlier than the current sample in the current block and being adjacent to the current sample in a vertical direction; and a decoder configured to decode the image by using a residual value of the current sample obtained from a bitstream and a prediction value of the current sample.

公开(公告)号：US10356418B2

公开(公告)日：2019-07-16

申请号：US15524329

申请日：2015-11-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Ki-ho Choi

IPC: H04N19/139 ,  H04N19/174 ,  H04N19/184 ,  H04N19/107 ,  H04N19/176 ,  H04N19/117 ,  H04N19/136 ,  H04N19/182

Abstract: Provided is a video decoding method including: acquiring offset type information of a current block; determining a neighboring sample of a current reconstruction sample of the current block according to an edge direction when the offset type information of the current block indicates an edge type; determining an offset category of the current reconstruction sample based on a sample value gradient between a sample value of the current reconstruction sample and a sample value of the neighboring sample and a difference in the sample value gradient; and applying, from among offsets acquired from a bitstream, an offset according to the determined offset category to the current reconstruction sample.

公开(公告)号：US10306262B2

公开(公告)日：2019-05-28

申请号：US16016031

申请日：2018-06-22

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: H04N19/50 ,  H04N19/59 ,  H04N19/176 ,  H04N19/196 ,  H04N19/80 ,  H04N19/119 ,  H04N19/147 ,  H04N19/61 ,  H04N19/96 ,  H04N19/513 ,  H04N19/593 ,  H04N19/44 ,  H04N19/52 ,  H04N19/172 ,  H04N19/159 ,  H04N19/139 ,  H04N19/117 ,  H04N19/82 ,  H04N19/86 ,  H04N19/30 ,  H04N19/184

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：US10091501B2

公开(公告)日：2018-10-02

申请号：US15096540

申请日：2016-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sun-il Lee ,  Chan-yul Park ,  Elena Alshina

IPC: H04N19/157 ,  H04N19/105 ,  H04N19/134 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96 ,  H04N19/593 ,  H04N19/11 ,  H04N19/57

Abstract: Provided is a video decoding method including: determining a size of a block on which intra block copy prediction is to be performed, based on block size information obtained from a bitstream; comparing the determined size of the block with a size of a current block, and determining, based on a result of the comparing, whether the size of the current block falls within the determined size of the block; and performing intra block copy prediction on the current block when it is determined that the size of the current block falls within the determined size of the block.

公开(公告)号：US10075721B2

公开(公告)日：2018-09-11

申请号：US15352312

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Yoon-mi Hong ,  Woo-jin Han

IPC: H04N19/36 ,  H04N19/124 ,  H04N19/63 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/13 ,  H04N19/42 ,  H04N19/40 ,  H04N19/174 ,  H04N19/184

CPC classification number: H04N19/36 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/40 ,  H04N19/42 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/98

Abstract: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

公开(公告)号：US10027972B2

公开(公告)日：2018-07-17

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: H04N7/12 ,  H04N19/50 ,  H04N19/176 ,  H04N19/196 ,  H04N19/80 ,  H04N19/119 ,  H04N19/147 ,  H04N19/61 ,  H04N19/96 ,  H04N19/513 ,  H04N19/593 ,  H04N19/44 ,  H04N19/52 ,  H04N19/172 ,  H04N19/159 ,  H04N19/139 ,  H04N19/117 ,  H04N19/82 ,  H04N19/86 ,  H04N19/184

CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/513 ,  H04N19/52 ,  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：US10021399B2

公开(公告)日：2018-07-10

申请号：US15727050

申请日：2017-10-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Jeong-hoon Park

IPC: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/91 ,  H04N19/86

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: The present disclosure relates to signaling of sample adaptive offset (SAO) parameters determined to minimize an error between an original image and a reconstructed image in video encoding and decoding operations. An SAO decoding method includes obtaining context-encoded leftward SAO merge information and context-encoded upward SAO merge information from a bitstream of a largest coding unit (MCU); obtaining SAO on/off information context-encoded with respect to each color component, from the bitstream; if the SAO on/off information indicates to perform SAO operation, obtaining absolute offset value information for each SAO category bypass-encoded with respect to each color component, from the bitstream; and obtaining one of band position information and edge class information bypass-encoded with respect to each color component, from the bitstream.

公开(公告)号：US10003805B2

公开(公告)日：2018-06-19

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 ,  H04N19/117 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/44 ,  H04N19/80 ,  H04N19/82 ,  H04N19/176

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.

公开(公告)号：US09794577B2

公开(公告)日：2017-10-17

申请号：US15486458

申请日：2017-04-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye Min ,  Elena Alshina ,  Woo-jin Han

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/159 ,  H04N19/30 ,  H04N19/186 ,  H04N19/176 ,  H04N19/184 ,  H04N19/182

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/122 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/593 ,  H04N19/96

Abstract: A method for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block.

公开(公告)号：US09787992B2

公开(公告)日：2017-10-10

申请号：US14415454

申请日：2013-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Alexander Alshin ,  Jeong-hoon Park

IPC: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/91 ,  H04N19/86

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: The present disclosure relates to signaling of sample adaptive offset (SAO) parameters determined to minimize an error between an original image and a reconstructed image in video encoding and decoding operations. An SAO decoding method includes obtaining context-encoded leftward SAO merge information and context-encoded upward SAO merge information from a bitstream of a largest coding unit (MCU); obtaining SAO on/off information context-encoded with respect to each color component, from the bitstream; if the SAO on/off information indicates to perform SAO operation, obtaining absolute offset value information for each SAO category bypass-encoded with respect to each color component, from the bitstream; and obtaining one of band position information and edge class information bypass-encoded with respect to each color component, from the bitstream.