The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2024
Filed:
Dec. 04, 2020
Fraunhofer-gesellschaft Zur Förderung Derangewandten Forschung E.v., Munich, DE;
Jonathan Pfaff, Berlin, DE;
Tobias Hinz, Berlin, DE;
Philipp Helle, Berlin, DE;
Philipp Merkle, Berlin, DE;
Björn Stallenberger, Berlin, DE;
Michael Schäfer, Berlin, DE;
Benjamin Bross, Berlin, DE;
Martin Winken, Berlin, DE;
Mischa Siekmann, Berlin, DE;
Heiko Schwarz, Berlin, DE;
Detlev Marpe, Berlin, DE;
Thomas Wiegand, Berlin, DE;
Abstract
Apparatus for decoding a predetermined block () of a picture using intra-prediction, configured to read, from the data stream (), a mode index (), the mode index pointing to one out of a list () of matrix-based intra-prediction modes. Additionally, the apparatus is configured to predict samples () of the predetermined block () by computing a matrix-vector product () between an input vector () derived from reference samples () in a neighborhood of the predetermined block () and a prediction matrix () associated with the matrix-based intra-prediction mode (k) pointed to by the mode index () and associating components () of an output vector () obtained by the matrix vector product () onto sample positions () of the predetermined block. For each matrix-based intra-prediction mode, all entries of the prediction matrix () associated with the respective matrix-based intra-prediction mode are represented by a fixed point representation of a predetermined bit-depth, the predetermined bit-depth being equal for the matrix-based intra-prediction modes. Furthermore, the apparatus is configured to, for each matrix-based infra-prediction mode, compute the matrix vector product () between the input vector () and the prediction matrix () associated with the respective matrix-based infra-prediction mode (k) by performing, for each component of the output vector, a right shift at a number of bits which is equal for the matrix-based intra-prediction modes.