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公开(公告)号：US12075091B2
公开(公告)日：2024-08-27
申请号：US17962391
申请日：2022-10-07
发明人： Jonathan Pfaff , Philipp Helle , Michael Schaefer , Roman Rischke , Tobias Hinz , Philipp Merkle , Bjoern Stallenberger , Martin Winken , Mischa Siekmann , Heiko Schwarz , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/61 , H04N19/176 , H04N19/184 , H04N19/44
CPC分类号： H04N19/61 , H04N19/176 , H04N19/184 , H04N19/44
摘要： Techniques for encoding/decoding of video signals are described, e.g. implemented in decoders, encoder, methods and non-transitory storage units storing instructions to perform the methods.
A decoder or encoder may be configured to predict a predetermined block of the picture using a plurality of neighbouring samples by reducing the plurality of neighbouring samples to obtain a reduced set of samples values lower, in number of samples, than compared to the plurality of neighbouring samples, subjecting the reduced set of sample values to a linear or affine linear transformation to obtain predicted values for predetermined samples of the predetermined block.-
公开(公告)号：US11641473B2
公开(公告)日：2023-05-02
申请号：US17145050
申请日：2021-01-08
发明人： Martin Winken , Christian Bartnik , Philipp Helle , Mischa Siekmann , Jonathan Pfaff , Detlev Marpe , Heiko Schwarz , Thomas Wiegand
IPC分类号： H04N19/139 , H04N19/109 , H04N19/117 , H04N19/176 , H04N19/577 , H04N19/137 , H04N19/57
摘要： A video encoder for encoding a video into a data stream using motion compensated prediction for inter predicted blocks, comprising a hypothesis number control, configured to control a number of prediction hypotheses of the inter predicted blocks within a predetermined portion of the video to meet a predetermined criterion.
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公开(公告)号：US11991355B2
公开(公告)日：2024-05-21
申请号：US17787218
申请日：2020-12-21
发明人： Benjamin Bross , Yago Sánchez De La Fuente , Robert Skupin , Martin Winken , Heiko Schwarz , Detlev Marpe , Thomas Schierl , Thomas Wiegand
IPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/80
CPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/80
摘要： Concepts are described, including encoding of a video into data stream and decoding of a data stream having a video encoded thereinto, using motion compensation prediction between pictures of equal resolution and pictures of different resolution, based on motion vectors at a half-sample resolution and on motion vectors at a different resolution using interpolation filters to obtain sub-sample values within a reference sample array. The interpolation filter is selected from two interpolation filter versions different in a higher edge preserving property, and the selection is depending on whether a current picture is equal in picture resolution to the reference sample array in horizontal and/or vertical dimension, and/or a constraint information in the data stream.
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公开(公告)号：US11363259B2
公开(公告)日：2022-06-14
申请号：US16845715
申请日：2020-04-10
发明人： Jonathan Pfaff , Philipp Helle , Dominique Maniry , Thomas Wiegand , Wojciech Samek , Stephan Kaltenstadler , Heiko Schwarz , Detlev Marpe , Mischa Siekmann , Martin Winken
IPC分类号： H04N19/11 , H04N19/109 , H04N19/176 , H04N19/61
摘要： In accordance with a first aspect, an improved compression efficiency is achieved by letting a block-wise picture codec support a set of intra-prediction modes according to which the intra-prediction signal for a current block of a picture is determined by applying a set of neighboring samples of the current block onto a neural network. A second aspect of the present application is that, additionally or alternatively to the spending of neural network-based intra-prediction modes, the mode selection may be rendered more effective by the usage of a neural network dedicated to determine a rank or a probability value for each of the set of intra-prediction modes by applying a set of neighboring samples thereonto with the rank or probability value being used for the selection of one intra-prediction mode out of the plurality of intra-prediction modes including or coinciding with the set of intra-prediction modes.
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公开(公告)号：US12022120B2
公开(公告)日：2024-06-25
申请号：US17763624
申请日：2020-09-24
发明人： Jonathan Pfaff , Björn Stallenberger , Michael Schafer , Philipp Merkle , Tobias Hinz , Philipp Helle , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Benjamin Bross , Martin Winken , Mischa Siekmann
IPC分类号： H04N19/00 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/61
CPC分类号： H04N19/619 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/46
摘要： A method, computer program, and apparatus for decoding a predetermined block of a picture using intra-prediction by reading, for each of predetermined intra-prediction blocks, from a data stream, a mode index identifying a matrix-based intra-prediction mode. Samples of each predetermined intra-prediction block are predicted by computing a matrix-vector product between an input vector derived from reference samples and a prediction matrix associated with the identified matrix-based intra-prediction mode (k) and associating components of an output vector obtained by the matrix-vector product onto sample positions of the predetermined block. Further predetermined intra-predicted blocks of the picture are predicted to obtain a prediction signal. A transformation flag is decoded from the data stream using context adaptive binary arithmetic coding, and a prediction residual is decoded and re-transformed using a reverse transformation based on the transformation flag to obtain a prediction residual signal. The prediction residual signal is used to correct the prediction signal.
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公开(公告)号：US20230039672A1
公开(公告)日：2023-02-09
申请号：US17962391
申请日：2022-10-07
发明人： Jonathan Pfaff , Philipp Helle , Michael Schaefer , Roman Rischke , Philipp Merkle , Tobias Hinz , Bjoern Stallenberger , Martin Winken , Mischa Siekmann , Heiko Schwarz , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/61 , H04N19/176 , H04N19/184 , H04N19/44
摘要： Techniques for encoding/decoding of video signals are described, e.g. implemented in decoders, encoder, methods and non-transitory storage units storing instructions to perform the methods.
A decoder or encoder may be configured to predict a predetermined block of the picture using a plurality of neighbouring samples by reducing the plurality of neighbouring samples to obtain a reduced set of samples values lower, in number of samples, than compared to the plurality of neighbouring samples, subjecting the reduced set of sample values to a linear or affine linear transformation to obtain predicted values for predetermined samples of the predetermined block.-
公开(公告)号：US12101510B2
公开(公告)日：2024-09-24
申请号：US18211729
申请日：2023-06-20
发明人： Jonathan Pfaff , Martin Winken , Christian Rudat , Heiko Schwarz , Thomas Wiegand , Detlev Marpe
摘要： A previously encoded or reconstructed version of a neighborhood of a predetermined block to be predicted is exploited so as to result into a more efficient predictive coding of the prediction block. In particular, a spectral decomposition of a region composed of this neighborhood and a first version of a predicted filling of the predetermined block results into a first spectrum which is subject to noise reduction and the thus resulting second spectrum may be subject to a spectral composition, thereby resulting in a modified version of this region including a second version of the predicted filling of the predetermined block. Owing to the exploitation of the already processed, i.e. encoded/reconstructed, neighborhood of the predetermined block, the second version of the predicted filling of the predetermined block tends to improve the coding efficiency.
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8.发明授权公开(公告)号：US12010337B2
公开(公告)日：2024-06-11
申请号：US17469137
申请日：2021-09-08
发明人： Benjamin Bross , Martin Winken , Anastasia Henkel , Paul Keydel , Ivan Zupancic , Heiko Schwarz , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/463 , H04N19/117 , H04N19/186 , H04N19/52 , H04N19/70
CPC分类号： H04N19/52 , H04N19/117 , H04N19/186 , H04N19/70
摘要： An encoder for hybrid video coding, the encoder for providing an encoded representation of a video sequence on the basis of an input video content, and the encoder configured to: determine one or more syntax elements related to a portion of the video sequence; select a processing scheme to be applied to the portion of the video sequence based a property described by on the one or more syntax elements, the processing scheme for acquiring a sample for a motion-compensated prediction at an integer and/or fractional location within the portion of the video sequence; encode an index indicating the selected processing scheme such that a given encoded index value represents different processing schemes depending on the property described by the one or more syntax elements; and provide, as the encoded representation of the video sequence, a bit stream including the one or more syntax elements and the encoded index.
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公开(公告)号：US11659169B2
公开(公告)日：2023-05-23
申请号：US17198750
申请日：2021-03-11
发明人： Jonathan Pfaff , Heiko Schwarz , Philipp Helle , Michael Schäfer , Roman Rischke , Tobias Hinz , Philipp Merkle , Björn Stallenberger , Martin Winken , Mischa Siekmann , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/176 , H04N19/593 , H04N19/11 , H04N19/48
CPC分类号： H04N19/11 , H04N19/176 , H04N19/48 , H04N19/593
摘要： There are disclosed techniques for block wise encoding and decoding. The techniques may be applied to encoders, decoders, and methods for encoding and/or decoding.
In one example, there is provided a technique to decode (resp. decode) a predetermined block of the picture by
assigning, based on a first signalization in the data stream, the predetermined block to the first set or the second set,
sorting the assigned set of intra-prediction modes according to intra-prediction modes used for neighboring blocks, neighboring the predetermined block, to obtain a list of intra prediction modes,
deriving, for the predetermined block, from the data stream, an index into the list of intra prediction modes,
predicting the predetermined block using an intra prediction mode onto which the index points.
The decoder (resp. encoder), if the assigned set is the first set of intra-prediction modes, in sorting the assigned set, uses a second mapping which maps each intra-prediction mode of the second set of prediction modes onto a representative one in the first set of intra-prediction modes.-
公开(公告)号：US11601672B2
公开(公告)日：2023-03-07
申请号：US17032113
申请日：2020-09-25
发明人： Jonathan Pfaff , Philipp Helle , Philipp Merkle , Björn Stallenberger , Mischa Siekmann , Martin Winken , Adam Wieckowski , Wojciech Samek , Stephan Kaltenstadler , Heiko Schwarz , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/593 , H04N19/105 , H04N19/11 , H04N19/176 , H04N19/61
摘要： An apparatus for block-wise decoding a picture from a data stream and/or encoding a picture into a data stream, the apparatus supporting at least one intra-prediction mode according to which the intra-prediction signal for a block of a predetermined size of the picture is determined by applying a first template of samples which neighbours the current block onto a neural network. The apparatus may be configured, for a current block differing from the predetermined size, to: resample a second template of samples neighboring the current block, so as to conform with the first template so as to obtain a resampled template; apply the resampled template of samples onto the neural network so as to obtain a preliminary intra-prediction signal; and resample the preliminary intra-prediction signal so as to conform with the current block so as to obtain the intra-prediction signal for the current block.
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