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1. 发明公开

EP4376407A1 CODING OF INTRA-PREDICTION MODES 审中-实审
公开(公告)号：EP4376407A1
公开(公告)日：2024-05-29
申请号：EP23211632.7
申请日：2020-06-10
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： PFAFF, Jonathan , HINZ, Tobias , HELLE, Philipp , MERKLE, Philipp , STALLENBERGER, Björn , SCHÄFER, Michael , BROSS, Benjamin , WINKEN, Martin , SIEKMANN, Mischa , SCHWARZ, Heiko , MARPE, Detlev , WIEGAND, Thomas
IPC分类号： H04N19/11 , H04N19/147 , H04N19/176 , H04N19/463 , H04N19/70
CPC分类号： H04N19/11 , H04N19/147 , H04N19/176 , H04N19/463 , H04N19/70
摘要： There are disclosed techniques for block-based predicting a block of a picture efficiently, like an apparatus (3000) for decoding a predetermined block (18) of a picture (10) using intra-prediction, configured to derive a set-selective syntax element (522) from the data stream (12) which indicates whether the predetermined block (18) is to be predicted using one of a first set (508) of intra-prediction modes comprising a DC intra prediction mode (506) and angular prediction modes (500). If the set-selective syntax element (522) indicates that the predetermined block (18) is to be predicted using one of the first set (508) of intra-prediction modes, the apparatus is configured to form a list (528) of most probable intra-prediction modes on the basis of intra-prediction modes (3050) using which neighbouring blocks (524, 526) neighbouring the predetermined block (18) are predicted, derive a MPM list index (534) from the data stream (12) which points into the list (528) of most probable intra-prediction modes onto a predetermined intra-prediction mode (3100) and intra-predict the predetermined block (18) using the predetermined intra-prediction mode (3100). If the set-selective syntax element (522) indicates that the predetermined block (18) is not to be predicted using one of the first set (508) of intra-prediction modes, the apparatus is configured to derive a further index (540; 546) from the data stream (12) which indicates a predetermined matrix-based intra-prediction mode (3200) out of a second set (520) of matrix-based intra-prediction modes (510), compute a matrix-vector product (512) between a vector (514, 400, 402) derived from reference samples (17) in a neighbourhood of the predetermined block (18) and a predetermined prediction matrix (516) associated with the predetermined matrix-based intra-prediction mode (3200) so as to obtain a prediction vector (518), and predict samples of the predetermined block (18) on the basis of the prediction vector (518). The list (528) of most probable intra-prediction modes is formed on the basis of intra-prediction modes (3050) using which neighbouring blocks (524, 526) neighbouring the predetermined block (18) are predicted such that the list (528) of most probable intra-prediction modes is free of the DC intra prediction mode (506) in case of the neighbouring blocks (524, 526) being predicted by any of the angular intra prediction modes (500).

6. 发明公开

EP2559240A1 INTER-PLANE PREDICTION 有权转让
标题翻译：预测水平之间
公开(公告)号：EP2559240A1
公开(公告)日：2013-02-20
申请号：EP10716518.5
申请日：2010-04-13
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： KIRCHHOFFER, Heiner , WINKEN, Martin , SCHWARZ, Heiko , MARPE, Detlev , WIEGAND, Thomas
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/159 , H04N19/103 , H04N19/119 , H04N19/147 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/96
摘要： A better rate distortion ratio is achieved by making interrelationships between coding parameters of different planes available for exploitation for the aim of redundancy reduction despite the additional overhead resulting from the need to signal the inter-plane prediction information to the decoder. In particular, the decision to use inter plane prediction or not may be performed for a plurality of planes individually. Additionally or alternatively, the decision may be done on a block basis considering one secondary plane.

9. 发明公开

EP2559246A1 SAMPLE REGION MERGING 有权转让
标题翻译： FUSION取样地区
公开(公告)号：EP2559246A1
公开(公告)日：2013-02-20
申请号：EP11714653.0
申请日：2011-04-13
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： HELLE, Philipp , OUDIN, Simon , WINKEN, Martin , MARPE, Detlev , WIEGAND, Thomas
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/186 , H04N19/105 , H04N19/119 , H04N19/139 , H04N19/14 , H04N19/147 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/46 , H04N19/463 , H04N19/52 , H04N19/61 , H04N19/96
摘要： In accordance with an embodiments, a favorable merging or grouping of simply connected regions into which the array of information samples is sub-divided, is coded with a reduced amount of data. To this end, for the simply connected regions, a predetermined relative locational relationship is defined enabling an identifying, for a predetermined simply connected region, of simply connected regions within the plurality of simply connected regions which have the predetermined relative locational relationship to the predetermined simply connected region. Namely, if the number is zero, a merge indicator for the predetermined simply connected region may be absent within the data stream. In accordance with even further embodiments, a spatial sub-division of an area of samples representing a spatial sampling of the two-dimensional information signal into a plurality of simply connected regions of different sizes by recursively multi-partitioning is performed depending on a first subset of syntax elements contained in the data stream, followed by a combination of spatially neighboring simply connected regions depending on a second subset of syntax elements within the data stream being disjoined from the first subset, to obtain an intermediate sub-division of the array of samples into disjoint sets of simply connected regions, the union of which is the plurality of simply connected regions. The intermediate sub-division is used when reconstructing the array of samples from the data stream.

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