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61. 发明公开

EP4133727A1 DYNAMIC RANGE ADJUSTMENT PARAMETER SIGNALING AND ENABLEMENT OF VARIABLE BIT DEPTH SUPPORT 审中-实审
公开(公告)号：EP4133727A1
公开(公告)日：2023-02-15
申请号：EP21722700.8
申请日：2021-04-09
申请人： QUALCOMM Incorporated
发明人： RUSANOVSKYY, Dmytro , RAMASUBRAMONIAN, Adarsh Krishnan , ZHANG, Yan , KARCZEWICZ, Marta
IPC分类号： H04N19/186 , H04N19/169 , H04N19/70 , H04N19/85

62. 发明公开

EP4128792A1 METHODS AND DEVICES FOR HIGH-LEVEL SYNTAX IN VIDEO CODING 审中-实审
公开(公告)号：EP4128792A1
公开(公告)日：2023-02-08
申请号：EP21782301.2
申请日：2021-04-02
申请人： Beijing Dajia Internet Information Technology Co., Ltd.
发明人： JHU, Hong-Jheng , CHEN, Yi-Wen , XIU, Xiaoyu , MA, Tsung-Chuan , CHEN, Wei , WANG, Xianglin , YU, Bing
IPC分类号： H04N19/70 , H04N19/105 , H04N19/132 , H04N19/186 , H04N19/44 , H04N19/577

63. 发明公开

EP4128752A1 LUMA MAPPING WITH CHROMA SCALING FOR GRADUAL DECODING REFRESH 审中-实审
公开(公告)号：EP4128752A1
公开(公告)日：2023-02-08
申请号：EP21712747.1
申请日：2021-03-12
申请人： Nokia Technologies Oy
发明人： WANG, Limin , PANUSOPONE, Krit , HONG, Seungwook
IPC分类号： H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70

64. 发明公开

EP4117286A1 IMAGE BLOCK PREDICTION METHOD AND DEVICE 审中-实审
公开(公告)号：EP4117286A1
公开(公告)日：2023-01-11
申请号：EP22163847.1
申请日：2018-05-22
申请人： Huawei Technologies Co., Ltd.
发明人： YANG, Haitao , ZHANG, Hong , LIU, Shan
IPC分类号： H04N19/157 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/59
摘要： This application provides a chroma prediction method and device, to improve accuracy of chroma prediction in a video encoding/decoding process, and improve quality of a reconstructed image. The method includes: obtaining luma information and chroma information of a to-be-processed image block, first processing information, and second processing information, where the first processing information indicates a downsampling processing manner used for a luma component of the to-be-processed image block, and the second processing information indicates a downsampling processing manner used for a chroma component of the to-be-processed image block; reconstructing a transient luma block of the to-be-processed image block based on the luma information of the to-be-processed image block, where resolution of the transient luma block is determined by using a sampling format of the to-be-processed image block and the first processing information; and obtaining a prediction block of a transient chroma block of the to-be-processed image block based on the resolution of the transient luma block, the sampling format of the to-be-processed image block, and the second processing information, where the resolution of the transient luma block is the same as resolution of the transient chroma block, and the resolution of the transient chroma block is determined by using the sampling format of the to-be-processed image block and the second processing information.

65. 发明公开

EP4113998A1 QUANTIZATION PARAMETER SIGNALING 审中-实审
公开(公告)号：EP4113998A1
公开(公告)日：2023-01-04
申请号：EP22192415.2
申请日：2020-05-27
申请人： Dolby Laboratories Licensing Corporation
发明人： PU, Fangjun , LU, Taoran , YIN, Peng , MCCARTHY, Sean Thomas
IPC分类号： H04N19/126 , H04N19/186 , H04N19/463 , H04N19/70 , H04N19/91
摘要： A quantization parameter signalling mechanism for both SDR and HDR content in video coding is described using two approaches. The first approach is to send the user-defined Qpc table directly in high level syntax. This leads to more flexible and efficient QP control for future codec development and video content coding. The second approach is to signal luma and chroma QPs independently. This approach eliminates the need for Qpc tables and removes the dependency of chroma quantization parameter on luma QP.

66. 发明授权

EP3815377B1 VIDEO ENCODER, VIDEO DECODER, AND CORRESPONDING ENCODING AND DECODING METHODS 有权
公开(公告)号：EP3815377B1
公开(公告)日：2022-12-28
申请号：EP19837624.6
申请日：2019-07-16
发明人： MA, Xiang , ZHAO, Yin , YANG, Haitao , CHEN, Jianle
IPC分类号： H04N19/593 , H04N19/186

67. 发明公开

EP4044592A3 METHOD AND APPARATUS OF PARTITIONING SMALL SIZE CODING UNITS WITH PARTITION CONSTRAINTS 审中-实审
公开(公告)号：EP4044592A3
公开(公告)日：2022-12-21
申请号：EP22160799.7
申请日：2020-08-21
申请人： HFI Innovation Inc.
发明人： LIN, Zhi-Yi , CHUANG, Tzu-Der , CHEN, Ching-Yeh
IPC分类号： H04N19/103 , H04N19/157 , H04N19/186 , H04N19/119 , H04N19/96
摘要： A method and apparatus of video coding are disclosed. According to one method of the present invention, a root block comprising one luma component and one or more chroma components in a 420 or 422 chroma format is received at the encoder side or compressed data comprising the root block at the decoder side. A target mode type is determined for all of the child blocks within the root block when one or more conditions are satisfies. The conditions comprise a child block width equal to 2 or a child block less than 16 for the chroma components. If Intra type mode is not selected for an image area enclosing the root block, the target mode type corresponds to the Intra or Inter type mode and otherwise, the target mode type corresponds to the Intra type mode. The child blocks in the root block are encoded or decoded accordingly.

68. 发明公开

EP4097971A1 NO-REFERENCE VISUAL MEDIA QUALITY ASSESSMENT COMBINING DEEP NEURAL NETWORKS AND MODELS OF HUMAN VISUAL SYSTEM AND VIDEO CONTENT/DISTORTION ANALYSIS 审中-实审转让
公开(公告)号：EP4097971A1
公开(公告)日：2022-12-07
申请号：EP21747742.1
申请日：2021-01-26
申请人： SSIMWAVE Inc.
发明人： WANG, Zhou , WANG, Jiheng , YEGANEH, Hojatollah , YE, Kaiwen , BADR, Ahmed , ZENG, Kai
IPC分类号： H04N17/04 , H04N19/154 , H04N19/186 , H04N19/85 , H04N21/442

69. 发明公开

EP4089627A2 A METHOD AND APPARATUS OF ENCODING AND DECODING A COLOR PICTURE 审中-实审
公开(公告)号：EP4089627A2
公开(公告)日：2022-11-16
申请号：EP22171742.4
申请日：2016-01-25
申请人： InterDigital VC Holdings, Inc.
发明人： LASSERRE, Sebastien , ANDRIVON, Pierre , LELEANNEC, Fabrice , TOUZE, David
IPC分类号： G06T5/00 , H04N19/186
摘要： The present disclosure generally relates to a method and device of encoding a color picture having color components (Ec) comprising obtaining (11) a luminance component (L) and two chrominance components (C1, C2) from the color picture to be encoded. The method for encoding a color picture having color components comprising obtaining at least one chrominance component from the color picture to be encoded, characterized in that the method further comprises:
- determining a first factor based on the value of each pixel (i) of said luminance component;
- obtaining at least one final chrominance component by scaling said at least one chrominance component by said first factor; and
- encoding (13) said at least one final chrominance component.

70. 发明公开

EP4088465A1 AN ENCODER, A DECODER AND CORRESPONDING METHODS ABOUT SIGNALING HIGH LEVEL SYNTAX 审中-实审
公开(公告)号：EP4088465A1
公开(公告)日：2022-11-16
申请号：EP21750945.4
申请日：2021-01-15
申请人： Huawei Technologies Co., Ltd.
发明人： KOTRA, Anand Meher , ESENLIK, Semih , WANG, Biao , GAO, Han , ALSHINA, Elena Alexandrovna
IPC分类号： H04N19/186

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