公开(公告)号：US11100609B2

公开(公告)日：2021-08-24

申请号：US16685721

申请日：2019-11-15

申请人： INFOBRIDGE PTE. LTD.

发明人： Min Jang

IPC分类号： H04N19/137 ,  G06T5/00 ,  H04N1/409 ,  H04N19/176 ,  H04N19/46 ,  H04N19/86 ,  H04N19/117 ,  H04N19/194 ,  H04N19/82 ,  H04N19/159 ,  H04N19/14 ,  H04N19/174 ,  H04N19/107 ,  H04N19/124 ,  G06K9/46

摘要： Provided is a method determines a boundary strength for each 4-sample edge lying on 8×8 sample grid, determines whether deblocking filtering is performed on the 4-sample edge or not if the boundary strength is not equal to zero, selects a deblocking filter if the deblocking filtering is performed on the 4-sample edge, and filters the 4-sample edge using the selected filter. Accordingly, the computational complexity required to determine the boundary strength according to the present invention is reduced by 50% or more when compared with the HEVC under development. Also, the memory capacity and bandwidth required to determine the boundary strength are reduced by 50% or more without deterioration of image quality.

公开(公告)号：US20210160502A1

公开(公告)日：2021-05-27

申请号：US17167930

申请日：2021-02-04

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/124 ,  H04N19/176 ,  H04N19/122 ,  H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/463 ,  H04N19/159 ,  H04N19/129 ,  H04N19/186 ,  H04N19/157 ,  H04N19/82 ,  H04N19/13 ,  H04N19/172

摘要： An apparatus can include a prediction mode decoding module configured to derive a luma intra prediction mode and a chroma intra prediction mode; a prediction size determining module configured to determine a size of a luma transform unit and a size of a chroma transform unit using transform size information; a reference pixel generating module configured to generate referential pixels if at least one reference pixel is unavailable; a reference pixel filtering module configured to adaptively filter the reference pixels of a current luma block based on the luma intra prediction mode and the size of the luma transform unit, and not to filter the reference pixels of a current chroma block; a prediction block generating module configured to generate prediction blocks of the current luma block and the current chroma block; a residual bock generating module configured to generate a luma residual block and a chroma residual block; and an adder.

公开(公告)号：US10757405B2

公开(公告)日：2020-08-25

申请号：US16046623

申请日：2018-07-26

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi Oh ,  Moonock Yang

IPC分类号： H04N19/109 ,  H04N19/126 ,  H04N19/159 ,  H04N19/463 ,  H04N19/124 ,  H04N19/52 ,  H04N19/176 ,  H04N19/46

摘要： An apparatus of encoding an image in an advanced motion vector prediction (AMVP) mode can include an inter prediction module for determining motion information of a current block, and generating a prediction block of the current block using the motion information; a transform module for transforming the residual block to generate a transformed block; a quantization module for quantizing the transformed block using a quantization parameter and a quantization matrix to generate a quantized block; a scanning module for scanning quantized coefficient components of the quantized block; and an entropy coding module for entropy-coding the scanned quantized coefficient components of the quantized block; in which the motion information is encoded by performing the sub-steps of: constructing an AMVP list using available motion vector candidates of a left motion vector candidate, an above motion vector candidate and a temporal motion vector candidate; selecting a motion vector predictor among motion vector candidates of the AMVP candidate list; generating a differential motion vector by subtracting the motion vector predictor from the motion vector; and encoding a reference picture index, the differential motion vector and an AMVP index specifying the motion vector predictor.

公开(公告)号：US20200228799A1

公开(公告)日：2020-07-16

申请号：US16828340

申请日：2020-03-24

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/11 ,  H04N19/124 ,  H04N19/593 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/463 ,  H04N19/105 ,  H04N19/119 ,  H04N19/126 ,  H04N19/44 ,  H04N19/192 ,  H04N19/18 ,  H04N19/13

摘要： An image decoding method includes deriving an intra prediction mode using three intra prediction modes which are determined by left and above intra prediction modes of a current prediction unit; generating a prediction block according to the intra prediction mode; generating a residual block using the intra prediction mode; and generating a reconstructed block using the prediction block and the residual block, wherein the intra prediction mode is derived by constructing a Most Probable Mode (MPM) group including three intra prediction modes determined based on the left intra prediction mode and the above intra prediction mode, by setting an intra prediction mode of the MPM group specified by a prediction mode index as the intra prediction mode of the current prediction unit if a mode group indicator indicates the MPM group, and by determining the intra prediction mode of the current prediction unit if the mode group indicator does not indicate the MPM group.

公开(公告)号：US20190387229A1

公开(公告)日：2019-12-19

申请号：US16557671

申请日：2019-08-30

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/124 ,  H04N19/117 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/593 ,  H04N19/82 ,  H04N19/11

摘要： An image decoding method can include deriving luma intra prediction mode and chroma intra prediction mode, wherein the luma intra prediction mode is derived by using a prediction mode index, a mode group indicator, and an MPM (Most Probable Mode) group including three intra prediction modes; determining a size of a luma transform unit and a size of a chroma transform unit; generating a reference pixel when at least one of reference pixels is unavailable; adaptively filtering a reference pixel of a current luma block based on the luma intra prediction mode and the size of luma transform unit; generating prediction blocks of a current chroma block and the current luma block using the adaptively filtered reference pixel; generating residual blocks of the current chroma block and the current luma block; and generating a reconstructed block by adding the residual blocks and the prediction blocks.

公开(公告)号：US20190335178A1

公开(公告)日：2019-10-31

申请号：US16507996

申请日：2019-07-10

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/124 ,  H04N19/91 ,  H04N19/52 ,  H04N19/137 ,  H04N19/139 ,  H04N19/61 ,  H04N19/109 ,  H04N19/129 ,  H04N19/13 ,  H04N19/196 ,  H04N19/463 ,  H04N19/593 ,  H04N19/513 ,  H04N19/119 ,  H04N19/176 ,  H04N19/159 ,  H04N19/503 ,  H04N19/86

摘要： A method of reconstructing video data using a merge mode can include constructing a merge list using available spatial and temporal merge candidates; determining a merge candidate on the merge list corresponding to a merge index as motion information of a current prediction unit; generating a predicted block of the current prediction unit using the motion information; generating a transformed block by inverse-quantizing a block of quantized coefficients using a quantization parameter; generating a residual block by inverse-transforming the transformed block; and generating a reconstructed block using the predicted block and the residual block, in which when the current prediction unit is a second prediction unit partitioned by asymmetric partitioning, the spatial merge candidate corresponding to a first prediction unit partitioned by the asymmetric partitioning is excluded from the merge list, and a motion vector of the temporal merge candidate is determined depending on a position of the current prediction unit within a largest coding unit (LCU), the quantization parameter is derived per a quantization unit and a minimum size of the quantization unit is adjusted per picture, and when a left quantization parameter of a current coding unit is not available and an above quantization parameter and a previous quantization parameter of the current coding unit are available, a quantization parameter predictor is set as an average of the above quantization parameter and the previous quantization parameter of the current coding unit, and when the above quantization parameter of the current coding unit is not available and the left quantization parameter and the previous quantization parameter of the current coding unit are available, the quantization parameter predictor is set as an average of the left quantization parameter and the previous quantization parameter of the current coding unit.

公开(公告)号：US20190320182A1

公开(公告)日：2019-10-17

申请号：US16452105

申请日：2019-06-25

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/139 ,  H04N19/174 ,  H04N19/196 ,  H04N19/513 ,  H04N19/124 ,  H04N19/593 ,  H04N19/463 ,  H04N19/176 ,  H04N19/503 ,  H04N19/52 ,  H04N19/126 ,  H04N19/51

摘要： An image decoding method using a merge mode, can include constructing a merge candidate list by using available spatial merge candidates and an available temporal merge candidate; generating a prediction block based on motion information derived by using the merge candidate list; inversely quantizing a quantization block by using a quantization parameter generated per quantization unit, wherein the quantization block is generated with quantization coefficient components; generating a residual block by inversely transforming the inversely quantized quantization block; deriving a reconstructed block by using the prediction block and the residual block, in which the spatial merge candidates are motion information of spatial merge candidate blocks, and the spatial merge candidate blocks are a left block, an above block, an above-right block, a left-below block or an above-left block of a current block, and a reference picture index of the temporal merge candidate is 0.

公开(公告)号：US20190306518A1

公开(公告)日：2019-10-03

申请号：US16447293

申请日：2019-06-20

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi OH ,  Moonock YANG

IPC分类号： H04N19/186 ,  H04N19/61 ,  H04N19/13 ,  H04N19/196 ,  H04N19/124 ,  H04N19/176 ,  H04N19/593 ,  H04N19/172 ,  H04N19/182 ,  H04N19/11 ,  H04N19/159 ,  H04N19/50 ,  H04N19/105

摘要： A method for decoding chroma image can include deriving a chroma intra prediction mode of a prediction unit using a corresponding luma intra prediction mode; determining a size of a current chroma block using luma transform size information; generating a chroma prediction block of the current chroma block; generating a chroma residual block of the current chroma block using the chroma intra prediction mode and a chroma quantization parameter; and generating a chroma reconstructed block adding the chroma prediction block and the chroma residual block, in which the chroma quantization parameter is generated using a luma quantization parameter determined per quantization unit and information indicating the relationship between the luma quantization parameter and the chroma quantization parameter, the size of the quantization unit is one of allowable sizes of a coding unit, and a minimum size of the quantization unit is determined per picture and a parameter for specifying the minimum size of the quantization unit is included in a picture parameter set.

公开(公告)号：US10375390B2

公开(公告)日：2019-08-06

申请号：US15332325

申请日：2016-10-24

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi Oh ,  Moonock Yang

IPC分类号： H04N19/11 ,  H04N19/176 ,  H04N19/117 ,  H04N19/91 ,  H04N19/157 ,  H04N19/86 ,  H04N19/103 ,  H04N19/593 ,  H04N19/159 ,  H04N19/129 ,  H04N19/463 ,  H04N19/44 ,  H04N19/122 ,  H04N19/124 ,  H04N19/46 ,  H04N19/61 ,  H04N19/625 ,  H04N19/172

摘要： An image encoding apparatus is presented. A differential quantization parameter is generated by subtracting a quantization parameter predictor from a quantization parameter, and is entropy-coded. If two or more quantization parameters are available among a left quantization parameter, an above quantization parameter and a previous quantization parameter of a current coding unit, the quantization parameter predictor is generated using two available quantization parameters determined according a predetermined order, and if only one quantization parameter is available, the available quantization parameter is set as the quantization parameter predictor. A transform type for inversely transforming the residual signals is selected among a discrete cosine transform (DCT)-based integer transform and a discrete sign transform (DST)-based integer transform based on a prediction mode and a size of a transform unit.

公开(公告)号：US10362312B2

公开(公告)日：2019-07-23

申请号：US15879125

申请日：2018-01-24

申请人： INFOBRIDGE PTE. LTD.

发明人： Soo Mi Oh ,  Moonock Yang

IPC分类号： H04N19/51 ,  H04N19/52 ,  H04N19/124 ,  H04N19/126 ,  H04N19/139 ,  H04N19/174 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593

摘要： An image encoding apparatus can include an inter prediction module for determining motion information of a current block, and generating a prediction block of the current block using the motion information; a transform module for transforming the residual block to generate a transformed block; a quantization module for quantizing the transformed block using a quantization parameter and a quantization matrix to generate a quantized block; a scanning module for scanning coefficient components of the quantized block using a diagonal scan; and an entropy coding module for entropy-coding the scanned coefficient components of the quantized block; in which the motion information is encoded by performing the sub-steps of: constructing a merge list using available spatial and temporal merge candidates; selecting a merge predictor among merge candidates of the merge list; and encoding a merge index specifying the merge predictor, in which if the current block is a second prediction unit partitioned by asymmetric partitioning, the spatial merge candidate corresponding to a first prediction unit partitioned by the asymmetric partitioning is set as unavailable.