公开(公告)号：EP4418655A2

公开(公告)日：2024-08-21

申请号：EP24186477.6

申请日：2010-08-11

Applicant: InterDigital VC Holdings, Inc.

Inventor： XU, Qian ,  ZHENG, Yunfei ,  LU, Xiaoan ,  YIN, Peng ,  SOLE ROJALS, Joel

IPC: H04N19/46

CPC classification number: H04N19/176 ,  H04N19/70 ,  H04N19/147 ,  H04N19/46 ,  H04N19/196 ,  H04N19/11 ,  H04N19/463 ,  H04N19/186

Abstract: Methods and apparatus are provided for improved chroma encoding and decoding. An apparatus includes an encoder (400) for encoding picture data for at least a block in a picture. Multiple partition types are supported for intra chroma coding of the block. The multiple partition types include a set of chroma partition types and a set of luma partition types. The set of chroma partition types are different than the set of luma partition types.

公开(公告)号：EP4354866A3

公开(公告)日：2024-05-01

申请号：EP24155449.2

申请日：2011-05-13

Applicant: InterDigital VC Holdings, Inc.

Inventor： XU, Qian ,  SOLE, Joel ,  YIN, Peng ,  ZHENG, Yunfei ,  LU, Xiaoan

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/134 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/132 ,  H04N19/157

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/134 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/132 ,  H04N19/157

Abstract: Methods and apparatus are provided for intra coding a block having pixels assigned to groups. An apparatus includes a video encoder (500) for encoding a block in a picture using intra prediction by dividing pixels within the block into at least a first group and a second group and encoding the pixels in the first group prior to encoding the pixels in the second group. A prediction for at least one of the pixels within the second group is obtained by evaluating the pixels within the first group and the second group.

公开(公告)号：EP4354866A2

公开(公告)日：2024-04-17

申请号：EP24155449.2

申请日：2011-05-13

Applicant: InterDigital VC Holdings, Inc.

Inventor： XU, Qian ,  SOLE, Joel ,  YIN, Peng ,  ZHENG, Yunfei ,  LU, Xiaoan

IPC: H04N19/157

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/134 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/132 ,  H04N19/157

Abstract: Methods and apparatus are provided for intra coding a block having pixels assigned to groups. An apparatus includes a video encoder (500) for encoding a block in a picture using intra prediction by dividing pixels within the block into at least a first group and a second group and encoding the pixels in the first group prior to encoding the pixels in the second group. A prediction for at least one of the pixels within the second group is obtained by evaluating the pixels within the first group and the second group.

公开(公告)号：EP3661206A1

公开(公告)日：2020-06-03

申请号：EP19193454.6

申请日：2010-06-23

Applicant: InterDigital VC Holdings, Inc.

Inventor： SOLE ROJALS, Joel ,  YIN, Peng ,  ZHENG, Yunfei ,  LU, Xiaoan ,  XU, Qian

IPC: H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/61 ,  H04N19/64 ,  H04N19/70 ,  H04N19/91

Abstract: Methods and apparatus are provided for encoding and decoding binary sets using adaptive tree selection. In one exemplary encoding method embodiment, picture data is encoded for a block in a picture; in which one of a plurality of trees structures is selected to code a binary set of data for indicating coefficient significance for the block (525). In another exemplary encoding method embodiment, picture data is encoded for a block in a picture, in which one or more trees are used to encode a binary set of data for indicating coefficient significance for the block, the one or more trees each having a plurality of nodes, at least one of the nodes of the one or more trees being modified responsive to at least one parameter (920, 925, 930).

公开(公告)号：EP4287621A3

公开(公告)日：2024-02-21

申请号：EP23205217.5

申请日：2011-06-08

Applicant: InterDigital VC Holdings, Inc.

Inventor： LU, Xiaoan ,  SOLE, Joel ,  YIN, Peng ,  XU, Qian ,  ZHENG, Yunfei

IPC: H04N19/126 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61

Abstract: An apparatus comprising a video decoder is provided, for decoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data, the quantization parameter predictor being determined using multiple quantization parameters from previously decoded neighboring portions; and decoding a difference value representative of a difference between the current quantization parameter and the quantization parameter predictor, wherein said difference value is added to said quantization parameter predictor for use in decoding the image data, and wherein said quantization parameter predictor is determined as a mean of the quantization parameters of the previously decoded neighboring portion to the left and the previously decoded neighboring portion above the portion currently being decoded when these neighboring portions are available, and if at least one of said neighboring portions is not available, the quantization parameter predictor is determined as a mean of quantization parameters of available neighboring portions and a quantization parameter for a current slice, wherein said portion of a picture is one of a block and a coding unit.

公开(公告)号：EP4024865A1

公开(公告)日：2022-07-06

申请号：EP22155475.1

申请日：2011-06-08

Applicant: InterDigital VC Holdings, Inc.

Inventor： LU, Xiaoan ,  SOLE, Joel ,  YIN, Peng ,  XU, Qian ,  ZHENG, Yunfei

IPC: H04N19/196 ,  H04N19/126 ,  H04N19/159 ,  H04N19/176 ,  H04N19/157 ,  H04N19/61

Abstract: An apparatus comprising a video decoder is provided, for decoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data, the quantization parameter predictor being determined using multiple quantization parameters from previously decoded neighboring portions; and decoding a difference value representative of a difference between the current quantization parameter and the quantization parameter predictor, wherein said difference value is added to said quantization parameter predictor for use in decoding the image data, and wherein said quantization parameter predictor is determined as a mean of the quantization parameters of the previously decoded neighboring portion to the left and the previously decoded neighboring portion above the portion currently being decoded when these neighboring portions are available, and if at least one of said neighboring portions is not available, the quantization parameter predictor is determined as a mean of quantization parameters of available neighboring portions and a quantization parameter for a current slice, wherein said portion of a picture is one of a block and a coding unit.

公开(公告)号：EP2039170B1

公开(公告)日：2019-09-04

申请号：EP07810286.0

申请日：2007-07-05

Applicant: InterDigital VC Holdings, Inc.

Inventor： PANDIT, Purvin, Bibhas ,  SU, Yeping ,  YIN, Peng ,  GOMILA, Cristina

IPC: H04N19/597

公开(公告)号：EP2465265B8

公开(公告)日：2019-01-23

申请号：EP10760462.1

申请日：2010-08-11

Applicant: InterDigital VC Holdings, Inc.

Inventor： XU, Qian ,  ZHENG, Yunfei ,  LU, Xiaoan ,  YIN, Peng ,  SOLE, Joel

IPC: H04N19/186 ,  H04N19/11

公开(公告)号：EP3961930A1

公开(公告)日：2022-03-02

申请号：EP21200647.2

申请日：2011-10-06

Applicant: InterDigital VC Holdings, Inc.

Inventor： HU, Yang ,  SOLE, Joel ,  LU, Xiaoan ,  YIN, Peng ,  ZHENG, Yunfei

IPC: H03M7/40 ,  H04N19/13 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: Methods and apparatus are provided for improved entropy encoding and decoding. An apparatus includes a video encoder (200) for encoding at least a block in a picture by transforming a residue of the block to obtain transform coefficients, quantizing the transform coefficients to obtain quantized transform coefficients, and entropy coding the quantized transform coefficients. The quantized transform coefficients are encoded using a flag to indicate that a current one of the quantized transform coefficients being processed is a last non-zero coefficient for the block having a value greater than or equal to a specified value.

公开(公告)号：EP2137973B1

公开(公告)日：2019-05-01

申请号：EP08727011.2

申请日：2008-03-20

Applicant: InterDigital VC Holdings, Inc.

Inventor： LUO, Jiancong ,  YIN, Peng ,  ZHU, Lihua

IPC: H04N19/70 ,  H04N19/30