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1. 发明申请

WO2019061537A1 METHOD AND APPARATUS FOR DERIVATION OF TEMPORAL MOTION DATA CANDIDATES IN VIDEO CODING 审中-公开
公开(公告)号：WO2019061537A1
公开(公告)日：2019-04-04
申请号：PCT/CN2017/105133
申请日：2017-09-30
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Xu , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/94
CPC分类号： H04N19/52 , H04N19/503 , H04N19/94
摘要： A method for deriving of one or more temporal motion data (TMD) candidates for a current block in video coding or video decoding is disclosed. It is determined whether a first prediction block at a primary TMD position is available, wherein the primary TMD position is a bottom right neighboring position outside a co-located block；and motion data of the primary TMD position and/or motion data of a secondary TMD position may be selected as the TMD candidates when the first prediction block at the primary TMD position is available and when the number of current available motion data candidates for an inter-prediction candidate list is smaller than a target number, wherein the secondary TMD position is a central position inside the co-located block. This method allows for providing more meaningful motion data candidates for inclusion in the inter-prediction candidate list for the current block, thus the coding performance of video data can be improved.

2. 发明公开

EP3618446A1 METHOD AND APPARATUS FOR INTRA-FRAME PREDICTION 审中-公开
公开(公告)号：EP3618446A1
公开(公告)日：2020-03-04
申请号：EP17914930.7
申请日：2017-06-22
申请人： Huawei Technologies Co., Ltd.
发明人： HAN, Yu , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/593 , H04N19/50
摘要： A method for decoding an intra-frame prediction mode includes: parsing a bitstream to obtain a first identifier, where the first identifier is used to indicate that an intra-frame prediction mode of a current to-be-decoded unit belongs to a first mode set, the first mode set is a subset of a plurality of preset candidate intra-frame prediction modes, and the first mode set includes intra-frame prediction modes of available neighborhood reconstruction units in preset positions of the current to-be-decoded unit and at least one non-directional prediction mode; and parsing the bitstream to obtain a second identifier when it is determined, based on the first identifier, that the intra-frame prediction mode of the current to-be-decoded unit belongs to the first mode set, where the second identifier is used to indicate a candidate intra-frame prediction mode, in the first mode set, that is used as the intra-frame prediction mode of the current to-be-decoded unit; or parsing the bitstream to obtain a third identifier when it is determined, based on the first identifier, that the intra-frame prediction mode of the current to-be-decoded unit does not belong to the first mode set, where the third identifier is used to indicate that the intra-frame prediction mode of the current to-be-decoded unit belongs to a second mode set, the second mode set is a subset of the plurality of preset candidate modes, there is no intersection between the second mode set and the first mode set, and the candidate intra-frame prediction modes in the second mode set include an intra-frame prediction mode that represents an adjacent prediction direction of a directional prediction mode in the first mode set.

3. 发明公开

EP3672249A1 INTER FRAME PREDICTION METHOD AND DEVICE AND CODEC FOR VIDEO IMAGES 有权
公开(公告)号：EP3672249A1
公开(公告)日：2020-06-24
申请号：EP18863727.6
申请日：2018-09-12
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Na , ZHENG, Jianhua , AN, Jicheng
IPC分类号： H04N19/503 , H04N19/157
摘要： Embodiments of this application disclose a video picture inter prediction method and a related product. The inter prediction method includes: determining an inter prediction mode used to perform inter prediction on a current picture block, where the inter prediction mode is one mode in a candidate inter prediction mode set, and the candidate inter prediction mode set includes a plurality of inter prediction modes used for a non-directional motion field and/or a plurality of inter prediction modes used for a directional motion field; and performing inter prediction on the current picture block based on the determined inter prediction mode. The embodiments of this application further disclose a motion information prediction method based on different inter prediction modes. The solutions in the embodiments of this application help improve prediction accuracy of motion information (for example, a motion vector) of a picture block, and reduce a bit rate with video quality unchanged, thereby improving encoding and decoding performance.

4. 发明公开

EP3968633A1 VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND TERMINAL 审中-公开
公开(公告)号：EP3968633A1
公开(公告)日：2022-03-16
申请号：EP21172622.9
申请日：2016-09-30
申请人： Huawei Technologies Co., Ltd.
发明人： AN, Jicheng , CHEN, Xu , ZHENG, Jianhua
IPC分类号： H04N19/00 , H04N19/52 , H04N19/463 , H04N19/573 , H04N19/577
摘要： A video encoding method, a video decoding method, and a terminal are provided. The video decoding method includes: obtaining, from a bitstream, an index of predicted motion information of a current image block in a candidate predicted motion information list, where the predicted motion information includes reference image information and a motion vector prediction value, and candidate predicted motion information in the candidate predicted motion information list is motion information of an adjacent block of the current image block in time domain or space domain; querying the candidate predicted motion information list based on the index, and using the found candidate predicted motion information as the predicted motion information; determining a correspondence between a motion vector difference and the motion vector prediction value based on the predicted motion information, and obtaining the motion vector difference from the bitstream; and adding the motion vector prediction value and the corresponding motion vector difference based on the correspondence to obtain a motion vector of the current image block. In this way, a motion vector of the current image block can be restored relatively accurately, and therefore an output video has relatively high quality in a case of a same bit rate.

5. 发明公开

EP3550842A1 IMAGE FILTERING METHOD, APPARATUS AND DEVICE 审中-公开
公开(公告)号：EP3550842A1
公开(公告)日：2019-10-09
申请号：EP16925296.2
申请日：2016-12-30
申请人： Huawei Technologies Co., Ltd.
发明人： AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/86
摘要： An image filtering method, apparatus, and device are disclosed. The method includes: obtaining a first index of a luma pixel block (S1001), where the first index represents a filter type applicable to an image feature corresponding to the luma pixel block; obtaining a second index of a first chroma pixel block (S1002), where the second index represents a filter type applicable to an image feature corresponding to the first chroma pixel block; filtering the luma pixel block by applying a filter, corresponding to the first index, in a filter set (S1004); and filtering the first chroma pixel block by applying a filter, corresponding to the second index, in the filter set (S1005).

6. 发明公开

EP3783888A1 VIDEO ENCODING AND DECODING METHOD AND APPARATUS 审中-公开
公开(公告)号：EP3783888A1
公开(公告)日：2021-02-24
申请号：EP18919173.7
申请日：2018-05-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Xu , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/105
摘要： Embodiments of this application disclose a method for obtaining a motion vector, including: determining a reference block of a to-be-processed block, where the reference block and the to-be-processed block have a preset temporal or spatial correlation, the reference block has an initial motion vector and one or more preset motion vector offsets, the initial motion vector of the reference block is obtained based on a predicted motion vector of the reference block, and a prediction block of the reference block is obtained based on the initial motion vector and the one or more preset motion vector offsets; and using the initial motion vector of the reference block as a predicted motion vector of the to-be-processed block.

7. 发明公开

EP3780612A1 CODING AND DECODING METHODS AND DEVICES 审中-实审
公开(公告)号：EP3780612A1
公开(公告)日：2021-02-17
申请号：EP19804393.7
申请日：2019-05-16
申请人： HUAWEI TECHNOLOGIES CO., LTD. , Tsinghua University
发明人： YU, Quanhe , AN, Jicheng , ZHENG, Jianhua , LIN, Yongbing , WANG, Liqiang , NIU, Benben , WEI, Ziwei , HE, Yun
IPC分类号： H04N19/176 , H04N19/172
摘要： Embodiments of this application relate to the video coding and compression field, and disclose an encoding method and apparatus, and a decoding method and apparatus, to resolve a problem that an existing split mode cannot satisfy a relatively complex texture requirement. The decoding method specifically includes: parsing a bitstream to determine a basic split mode for a current to-be-decoded picture block and a target derivation mode for a subpicture block of the current to-be-decoded picture block; splitting the current to-be-decoded picture block into N subpicture blocks in the basic split mode, where N is an integer greater than or equal to 2; deriving one derived picture block from at least two adjacent subpicture blocks in the N subpicture blocks in the target derivation mode; and decoding the derived picture block.

8. 发明公开

EP3764644A1 INTRA-FRAME MODE PREDICTION METHOD AND APPARATUS FOR IMAGE BLOCK 审中-实审
公开(公告)号：EP3764644A1
公开(公告)日：2021-01-13
申请号：EP18911951.4
申请日：2018-03-31
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZHANG, Na , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/11 , H04N19/159 , H04N19/593
摘要： A method and an apparatus and for intra prediction of a picture block are provided, to provide a manner of predicting a current block by using spatial non-adjacent blocks or a temporal neighboring block, thereby improving coding performance. The method includes: constructing a first luma intra mode set, where the first luma intra mode set includes a determined luma prediction mode of a picture block that is not spatially adjacent to a current block in a picture in which the current block is located and/or a determined luma prediction mode of a picture block that temporally neighbors to the current block in the picture in which the current block is located; parsing a bitstream to obtain a first identifier; when the first identifier indicates that a luma prediction mode of the current block belongs to the first luma intra mode set, parsing the bitstream to obtain a second identifier, where the second identifier is used to indicate that a candidate luma prediction mode in the first luma intra mode set is used as the luma prediction mode of the current block; and obtaining a luma prediction value of the current block based on the luma prediction mode of the current block.

9. 发明公开

EP3731526A1 METHOD AND DEVICE FOR PREDICTING MOTION INFORMATION OF IMAGE BLOCK, AND CODEC 审中-公开
公开(公告)号：EP3731526A1
公开(公告)日：2020-10-28
申请号：EP18893007.7
申请日：2018-09-21
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZHANG, Na , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/176 , H04N19/105
摘要： Embodiments of this application disclose a method for predicting motion information of a picture block and a related product. The method includes: determining a candidate motion information list of a current picture block, where the candidate motion information list includes at least one piece of combined candidate motion information, first combined candidate motion information in the at least one piece of combined candidate motion information is obtained by weighting P pieces of candidate motion information by using corresponding weighting factors, P is an integer greater than or equal to 2, weighting factors w pi for at least two of the P pieces of candidate motion information are respectively values greater than 0 and less than 1, and a sum of the weighting factors for the P pieces of candidate motion information is 1; determining target motion information in the candidate motion information list; and predicting motion information of the current picture block based on the target motion information, where the motion information is used for intra prediction or inter prediction. The solutions in the embodiments of this application help improve prediction accuracy of motion information of a picture block.

10. 发明公开

EP3595317A1 IMAGE FILTERING METHOD AND APPARATUS 审中-公开
公开(公告)号：EP3595317A1
公开(公告)日：2020-01-15
申请号：EP17901591.2
申请日：2017-12-12
申请人： Huawei Technologies Co., Ltd.
发明人： AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/82
摘要： This application provides an image filtering method and apparatus. The method includes: determining a filter coefficient of a chroma filter based on a filter coefficient of a luma filter, where the luma filter and the chroma filter are respectively applied to perform filtering processing on luma samples and chroma samples of a to-be-processed image, all filter coefficients of the luma filter present a first geometric distribution, all filter coefficients of the chroma filter present a second geometric distribution, the first geometric distribution and the second geometric distribution are similar shapes, and a filter coefficient of the chroma filter at an edge of the second geometric distribution is calculated by using a plurality of filter coefficients of the luma filter at an edge of the first geometric distribution; and respectively performing filtering processing on the luma samples and the chroma samples by using the luma filter and the chroma filter.

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