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Patent Agency Ranking
1.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
Inventor： Benjamin Bross , Martin Winken , Anastasia Henkel , Paul Keydel , Ivan Zupancic , Heiko Schwarz , Detlev Marpe , Thomas Wiegand
IPC: H04N19/463 , H04N19/117 , H04N19/186 , H04N19/52 , H04N19/70
CPC classification number: H04N19/52 , H04N19/117 , H04N19/186 , H04N19/70
Abstract: 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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2.发明授权公开(公告)号：US11706413B2
公开(公告)日：2023-07-18
申请号：US17362869
申请日：2021-06-29
Inventor： Benjamin Bross , Phan Hoang Tung Nguyen , Paul Keydel , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Christian Helmrich
IPC: H04N19/12 , H04N19/129 , H04N19/132 , H04N19/176 , H04N19/46
CPC classification number: H04N19/12 , H04N19/129 , H04N19/132 , H04N19/176 , H04N19/46
Abstract: A picture in a data stream is subdivided into different size transform blocks. For a transform block, a transformation is selected by checking whether the block's size exceeds a threshold. If it does, a default technique is used to select the transformation. If it does not, a transformation is used from a list of transformations as identified by an index, the list including an identity transformation and non-identity transformations. A coefficients block in the data stream is decoded, and if the selected transformation is the identity transformation, then the coefficients block is used as a residual sample array, and if the selected transformation is not the identity transformation, the coefficients block is subjected to an inverse transformation corresponding to the selected transformation to obtain a residual sample array used to correct a prediction for the transform block.
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3.发明授权公开(公告)号：US12003723B2
公开(公告)日：2024-06-04
申请号：US18208952
申请日：2023-06-13
Inventor： Benjamin Bross , Phan Hoang Tung Nguyen , Paul Keydel , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Christian Helmrich
IPC: H04N19/12 , H04N19/129 , H04N19/132 , H04N19/176 , H04N19/46
CPC classification number: H04N19/12 , H04N19/129 , H04N19/132 , H04N19/176 , H04N19/46
Abstract: A picture in a data stream is subdivided into different size transform bocks. For a transform block, a transformation is selected by checking whether the block's size exceeds a threshold. If it does, a default technique is used to select the transformation. If it does not, a transformation is used from a list of transformations as identified by an index, the list including an identity transformation and non-identity transformations. A coefficients block in the data stream is decoded, and if the selected transformation is the identity transformation, then the coefficients block is used as a residual sample array, and if the selected transformation is not the identity transformation, the coefficients block is subjected to an inverse transformation corresponding to the selected transformation to obtain a residual sample array used to correct a prediction for the transform block.
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公开(公告)号：US11606554B2
公开(公告)日：2023-03-14
申请号：US17135058
申请日：2020-12-28
Inventor： Benjamin Bross , Philipp Merkle , Simone Walter , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Paul Keydel
IPC: H04N19/00 , H04N19/117 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: A video encoder is configured to encode, by block based predictive encoding, pictures of a video into coding data, wherein the block based predictive encoding includes an intra-picture prediction. The video encoder is configured to use, for the intra-picture prediction, for encoding a prediction block of a picture, a plurality of nearest reference samples of the picture directly neighboring the prediction block and a plurality of extended reference samples, each extended reference sample of the plurality of extended reference samples separated from the prediction block at least by one nearest reference sample of the plurality of reference samples. The video encoder is further configured to sequentially determine an availability or unavailability of each of the plurality of nearest reference samples and to substitute a nearest reference sample being determined as unavailable by a substitution sample. The video encoder is configured to use the substitution sample for the intra-picture prediction.
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公开(公告)号：US11122300B2
公开(公告)日：2021-09-14
申请号：US17000459
申请日：2020-08-24
Inventor： Christian Helmrich , Paul Keydel , Sebastian Bosse
IPC: H04N11/02 , H04N19/86 , H04N19/124 , H04N19/176 , H04N19/60
Abstract: Examples are provided for apparatus and methods for video encoding and decoding. An encoder apparatus for encoding a picture into a data stream is configured to: subject a transform of a block of the picture to quantization to obtain a quantized transform; determine a zero-quantized portion of the quantized transform; determine at least one noise parameter providing noise information on the transform within the zero-quantized portion; signal the quantized transform and the at least one parameter.
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