Intra prediction mode concept for block-based picture coding

摘要

According to the first aspect, improved compression efficiency is achieved by applying a neighboring set of samples of a current block to a neural network, thereby allowing a block-wise picture codec in which an intra prediction signal for a current block of a picture is determined to support an intra prediction mode set. . In the second aspect of the present application, in addition or alternative to the use of the neural network based intra prediction mode, the mode selection includes selection of one intra prediction mode among a plurality of intra prediction modes that include or match a series of intra prediction modes. By applying a set of neighboring samples having a rank or probability value used for, it can be rendered more effectively by using a dedicated neural network to determine the rank or probability value for each set of intra prediction modes.