METHODS FOR PREDICTING INTERSTRUCTURE, ENCODERS, DECODERS, AND COMPUTER-READABLE RECORDS

Abstract

The proposed implementations of the invention include a method for predicting internal structure, an encoder, a decoder, and a computer-readable recording device. The decoder decodes the bit stream to determine the internal structure prediction mode parameter of the current block. When the internal structure prediction mode parameter indicates that IWCP mode is used to determine the internal structure prediction value of the current block, the first mode index and the second mode index of the current block are determined. The MPM list for the current block is composed at least based on the neighborhood of the current block. The first and second internal structure prediction modes of the current block are determined by the first mode index, the second mode index, and the MPM list. The first and second internal structure prediction modes are two prediction modes with different internal structure angles. The weight matrix for the current block is determined.The predicted value of the current block is determined based on the first internal structural prediction mode, the second internal structural prediction mode, and the weight matrix.