Patent ID: 11889066
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 14:
15. A non-transitory digital storage medium having a computer program stored thereon which, when executed by a processor, causes an apparatus to perform a method for assisting in selecting among a set of intra-prediction modes for block-based picture coding, the method comprising:
predicting, using each of the set of intra-prediction modes, a first picture test block from a first set of neighboring samples neighboring the first picture test block to acquire, for each of the set of intra-prediction modes, a prediction signal for the first picture test block;
applying the first set of neighboring samples onto the neural network or the sequence of one or more linear functions to acquire, for each of the set of intra-prediction modes, a probability value indicative of a probability of a respective intra-prediction mode;
determining, for each of the set of intra-prediction modes, a cost estimate for coding costs related to prediction error coding and mode signalization using the prediction signal acquired for the respective intra-prediction mode;
updating parameters of the neural network or the sequence of one or more linear functions to reduce a coding cost function having a first addend forming a residual rate estimate depending on the prediction signal acquired for the intra-prediction mode of lowest coding cost estimate, and a second addend forming a mode signaling side information rate estimate depending on the prediction signal and the probability value acquired for the intra-prediction mode of lowest coding cost estimate; and
using the updated parameters:
predicting, using each of the set of intra-prediction modes, a second picture test block from a second set of neighboring samples neighboring the second picture test block to acquire, for each of the set of intra-prediction modes, a prediction signal for the second picture test block; and
applying the second set of neighboring samples onto one of the neural network or the sequence of one or more linear functions in which each linear function is followed by a respective non-linear function to acquire, for each of the set of intra-prediction modes, a probability value indicative of a probability of the respective intra-prediction mode.