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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
发明人： XU, Qian , ZHENG, Yunfei , LU, Xiaoan , YIN, Peng , SOLE ROJALS, Joel
IPC分类号： H04N19/46
CPC分类号： H04N19/176 , H04N19/70 , H04N19/147 , H04N19/46 , H04N19/196 , H04N19/11 , H04N19/463 , H04N19/186
摘要： 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.
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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
发明人： XU, Qian , SOLE, Joel , YIN, Peng , ZHENG, Yunfei , LU, Xiaoan
IPC分类号： H04N19/105 , H04N19/176 , H04N19/147 , H04N19/46 , H04N19/134 , H04N19/61 , H04N19/593 , H04N19/12 , H04N19/132 , H04N19/157
CPC分类号： H04N19/105 , H04N19/176 , H04N19/147 , H04N19/46 , H04N19/134 , H04N19/61 , H04N19/593 , H04N19/12 , H04N19/132 , H04N19/157
摘要： 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.
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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
发明人： XU, Qian , SOLE, Joel , YIN, Peng , ZHENG, Yunfei , LU, Xiaoan
IPC分类号： H04N19/157
CPC分类号： H04N19/105 , H04N19/176 , H04N19/147 , H04N19/46 , H04N19/134 , H04N19/61 , H04N19/593 , H04N19/12 , H04N19/132 , H04N19/157
摘要： 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.
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4.发明公开
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
发明人： SOLE ROJALS, Joel , YIN, Peng , ZHENG, Yunfei , LU, Xiaoan , XU, Qian
IPC分类号： H04N19/147 , H04N19/159 , H04N19/172 , H04N19/184 , H04N19/46 , H04N19/61 , H04N19/64 , H04N19/70 , H04N19/91
摘要： 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).
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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
发明人： LU, Xiaoan , SOLE, Joel , YIN, Peng , XU, Qian , ZHENG, Yunfei
IPC分类号： H04N19/126 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/61
摘要： 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.
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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
发明人： LU, Xiaoan , SOLE, Joel , YIN, Peng , XU, Qian , ZHENG, Yunfei
IPC分类号： H04N19/196 , H04N19/126 , H04N19/159 , H04N19/176 , H04N19/157 , H04N19/61
摘要： 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.
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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
发明人： XU, Qian , ZHENG, Yunfei , LU, Xiaoan , YIN, Peng , SOLE, Joel
IPC分类号： H04N19/186 , H04N19/11
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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
发明人： HU, Yang , SOLE, Joel , LU, Xiaoan , YIN, Peng , ZHENG, Yunfei
摘要： 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.
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10.发明授权
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
发明人： LUO, Jiancong , YIN, Peng , ZHU, Lihua
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