Patents by Inventor Mischa SIEKMANN

Mischa SIEKMANN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220224904
    Abstract: A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode.
    Type: Application
    Filed: February 1, 2022
    Publication date: July 14, 2022
    Inventors: Valeri GEORGE, Benjamin BROSS, Heiner KIRCHHOFFER, Detlev MARPE, Tung NGUYEN, Matthias PREISS, Mischa SIEKMANN, Jan STEGEMANN, Thomas WIEGAND, Christian BARTNIK
  • Patent number: 11363259
    Abstract: 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.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: June 14, 2022
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., München
    Inventors: Jonathan Pfaff, Philipp Helle, Dominique Maniry, Thomas Wiegand, Wojciech Samek, Stephan Kaltenstadler, Heiko Schwarz, Detlev Marpe, Mischa Siekmann, Martin Winken
  • Publication number: 20220116606
    Abstract: An apparatus configured to select a predetermined intra prediction mode out of a plurality of intra-prediction modes which includes a first set of intra-prediction modes and a second set of matrix-based intra-prediction modes. The apparatus is configured to select a subset of one or more secondary transforms dependent on the predetermined intra prediction mode so that the subset is nonempty in case of the predetermined intra prediction mode being contained in the first set of intra-prediction modes or in the second set of matrix-based intra-prediction modes. The apparatus is configured to derive a transformed version of a prediction residual for a predetermined block, which is related to a spatial domain version of the prediction residual of the predetermined block via a transform defined by a concatenation of a primary transform and a predetermined secondary transform out of the subset of secondary transforms.
    Type: Application
    Filed: December 22, 2021
    Publication date: April 14, 2022
    Inventors: Jonathan PFAFF, Tobias HINZ, Philipp HELLE, Philipp MERKLE, Björn STALLENBERGER, Michael SCHÄFER, Benjamin BROSS, Martin WINKEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND
  • Patent number: 11297338
    Abstract: A video encoder encodes a video into a data stream, the video encoder being configured to vary a granularity at which a Quantization Parameter—QP—is applied depending on an association of frames of the video to temporally hierarchical layers at which the video is encoded into the data stream. The technology also concerns a respective decoder, a respective method for encoding and decoding, and a computer program for implementing the methods.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: April 5, 2022
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Christian Helmrich, Heiko Schwarz, Detlev Marpe, Thomas Wiegand, Adam Wieckowski, Mischa Siekmann, Benjamin Bross
  • Patent number: 11297341
    Abstract: A decoder is described, which receives an encoded data stream. The encoded data stream includes data representing a picture and a classification mode parameter. The classification mode parameter specifies a certain classification to be applied to samples in the picture, the certain classification selected from a plurality of classifications. The decoder decodes the encoded data stream to obtain a reconstructed picture and the classification mode parameter, classifies samples of the reconstructed picture into one of a plurality of classes using the certain classification specified by the classification mode parameter, and filters the samples of the reconstructed picture. A sample is filtered using a filter for the class into which the sample has been classified.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: April 5, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Johannes Erfurt, Lim Wang-Q, Mischa Siekmann, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
  • Publication number: 20220103813
    Abstract: Apparatus configured to derive a set-selective syntax element indicating whether the predetermined block is to be predicted using one of a first set of intra-prediction modes comprising a DC intra prediction mode and angular prediction modes. If the set-selective syntax element indicates that the predetermined block is to be predicted using one of the first set of intra-prediction modes, the apparatus is configured to use a list of most probable intra-prediction modes. If the set-selective syntax element indicates that the predetermined block is not to be predicted using one of the first set of intra-prediction modes, the apparatus is configured to use a matrix-based intra-prediction mode. The list of most probable intra-prediction modes is formed such that the list of most probable intra-prediction modes is free of the DC intra prediction mode in case of the neighbouring blocks being predicted by any of the angular intra prediction modes.
    Type: Application
    Filed: December 13, 2021
    Publication date: March 31, 2022
    Inventors: Jonathan PFAFF, Tobias HINZ, Philipp HELLE, Philipp MERKLE, Bjoern STALLENBERGER, Michael SCHAEFER, Benjamin BROSS, Martin WINKEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND
  • Patent number: 11284065
    Abstract: A video decoder for decoding a video from a data stream using block-based predictive decoding, the video decoder supporting a set of primitive prediction modes for predicting blocks of a picture of the video, is configured to predict a predetermined block by a composed prediction signal by deriving, using a collection of one or more primitive prediction modes out of the set of primitive prediction modes, a collection of one or more primitive predictions for the predetermined block, and composing the composed prediction signal for the predetermined block by combining the collection of one or more primitive predictions.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 22, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thomas Wiegand, Detlev Marpe, Heiko Schwarz, Martin Winken, Christian Bartnik, Jonathan Pfaff, Philipp Helle, Mischa Siekmann
  • Patent number: 11277614
    Abstract: A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: March 15, 2022
    Assignee: GE Video Compression, LLC
    Inventors: Valeri George, Benjamin Bross, Heiner Kirchhoffer, Detlev Marpe, Tung Nguyen, Matthias Preiss, Mischa Siekmann, Jan Stegemann, Thomas Wiegand, Christian Bartnik
  • Publication number: 20220058239
    Abstract: Apparatus for predicting a predetermined block of a picture using a plurality of reference samples The apparatus is configured to form a sample value vector out of the plurality of reference samples, derive from the sample value vector a further vector onto which the sample value vector is mapped by a predetermined invertible linear transform, compute a matrix-vector product between the further vector and a predetermined prediction matrix so as to obtain a prediction vector, and predict samples of the predetermined block on the basis of the prediction vector.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Inventors: Jonathan PFAFF, Tobias HINZ, Philipp HELLE, Philipp MERKLE, Björn STALLENBERGER, Michael SCHÄFER, Benjamin BROSS, Martin WINKEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND
  • Publication number: 20210409739
    Abstract: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.
    Type: Application
    Filed: August 25, 2021
    Publication date: December 30, 2021
    Inventors: Tobias HINZ, Haricharan LAKSHMAN, Jan STEGEMANN, Philipp HELLE, Mischa SIEKMANN, Karsten SUEHRING, Detlev MARPE, Heiko SCHWARZ, Christian BARTNIK, Ali Atef Ibrahim KHAIRAT ABDELHAMID, Heiner KIRCHHOFFER, Thomas WIEGAND
  • Publication number: 20210314618
    Abstract: 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.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Jonathan PFAFF, Philipp HELLE, Michael SCHAEFER, Roman RISCHKE, Tobias HINZ, Philipp MERKLE, Bjoern STALLENBERGER, Martin WINKEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND
  • Patent number: 11134255
    Abstract: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: September 28, 2021
    Assignee: GE Video Compression, LLC
    Inventors: Tobias Hinz, Haricharan Lakshman, Jan Stegemann, Philipp Helle, Mischa Siekmann, Karsten Suehring, Detlev Marpe, Heiko Schwarz, Christian Bartnik, Ali Atef Ibrahim Khairat Abdelhamid, Heiner Kirchhoffer, Thomas Wiegand
  • Publication number: 20210266563
    Abstract: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.
    Type: Application
    Filed: July 2, 2019
    Publication date: August 26, 2021
    Inventors: Tobias HINZ, Haricharan LAKSHMAN, Jan STEGEMANN, Philipp HELLE, Mischa SIEKMANN, Karsten SUEHRING, Detlev MARPE, Heiko SCHWARZ, Christian BARTNIK, Ali Atef Ibrahim KHAIRAT ABDELHAMID, Heiner KIRCHHOFFER, Thomas WIEGAND
  • Publication number: 20210243446
    Abstract: A decoder includes an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initial
    Type: Application
    Filed: April 16, 2021
    Publication date: August 5, 2021
    Inventors: Valeri GEORGE, Benjamin BROSS, Heiner KIRCHHOFFER, Detlev MARPE, Tung NGUYEN, Matthias PREISS, Mischa SIEKMANN, Jan STEGEMANN, Thomas WIEGAND
  • Publication number: 20210218960
    Abstract: 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.
    Type: Application
    Filed: March 11, 2021
    Publication date: July 15, 2021
    Inventors: Jonathan PFAFF, Heiko SCHWARZ, Philipp HELLE, Michael SCHÄFER, Roman RISCHKE, Tobias HINZ, Philipp MERKLE, Björn STALLENBERGER, Martin WINKEN, Mischa SIEKMANN, Detlev MARPE, Thomas WIEGAND
  • Patent number: 11012695
    Abstract: A decoder includes an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initial
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: May 18, 2021
    Assignee: GE Video Compression, LLC
    Inventors: Valeri George, Benjamin Bross, Heiner Kirchhoffer, Detlev Marpe, Tung Nguyen, Matthias Preiss, Mischa Siekmann, Jan Stegemann, Thomas Wiegand
  • Publication number: 20210136386
    Abstract: 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.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Inventors: Martin WINKEN, Christian BARTNIK, Philipp HELLE, Mischa SIEKMANN, Jonathan PFAFF, Detlev MARPE, Heiko SCHWARZ, Thomas WIEGAND
  • Publication number: 20210084301
    Abstract: In transform coefficient coding, predetermined sets of transforms may be used. Embodiments of the present invention provide an encoder and a decoder for encoding a picture into/from a data stream using block-based prediction and block-based residual coding, the encoder and decoder supporting a set of transforms for the block-based residual coding. The encoder and decoder are configured to determine a transform candidate list of transforms for a current residual block out of the set of transforms based on a height and a width of the current residual block, and to encode/decode a prediction residual within the residual block using one selected transform out of the selectable list of transforms and selectively signal/derive the selected transform in/from the data stream.
    Type: Application
    Filed: September 28, 2020
    Publication date: March 18, 2021
    Inventors: Mischa SIEKMANN, Bjoern STALLENBERGER, Christian BARTNIK, Sebastian BOSSE, Jonathan PFAFF, Philipp HELLE, Jackie MA, Martin WINKEN, Detlev MARPE, Heiko SCHWARZ, Thomas WIEGAND
  • Publication number: 20210029359
    Abstract: Concepts for more efficiently coding a picture and/or a video a data stream are described, in particular, ones using efficient transform coefficient block coding.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 28, 2021
    Inventors: Paul HAASE, Christian RUDAT, Heiner KIRCHHOFFER, Phan Hoang Tung NGUYEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND
  • Publication number: 20210029360
    Abstract: Concepts for more efficiently coding a picture and/or a video a data stream are described, in particular, ones using efficient transform coefficient block coding.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 28, 2021
    Inventors: Paul HAASE, Christian RUDAT, Heiner KIRCHHOFFER, Phan Hoang Tung NGUYEN, Mischa SIEKMANN, Heiko SCHWARZ, Detlev MARPE, Thomas WIEGAND