Methods for predicting interstructure, encoder, decoder, and methods for transmission of bit stream

Abstract

The invention relates to a method for predicting internal structure, a codec, a decoder, and a method for transmitting bit streams. The internal structure prediction method includes the following steps: decoding the bit stream to determine the internal structure prediction mode parameters of the current block; determining the first mode index and the second mode index of the current block when the internal structure prediction mode parameters indicate that the combined prediction mode assigned internal structure weights is used to determine the internal structure prediction value of the current block; constructing a list of the most probable modes (MPM) for the current block; Determine the first and second internal structure forecast modes of the current cluster according to the first mode index, the second mode index, and the MPM list, where the first internal structure forecast mode and the second internal structure forecast mode are two forecast modes based on different internal structure angles; and determine the weight matrix for the current block and determine the predicted value of the current block based on the first internal structure prediction mode, the second internal structure prediction mode, and the weight matrix.