Intra-frame predicting method or device for estimating pixel value

Abstract

The embodiment of the invention discloses a method or device for estimating a pixel intra-frame predicted value. The method comprises the following steps of: determining a target coding block to be predicted as a non-square block, and determining a first adjoined block adjoined to the short edge of the target coding block and a second adjoined block adjoined to the long edge of the target coding block; determining a first prediction mode for predicting a pixel point of the target coding block according to the first adjoined block; determining other N types of prediction modes, except for the first prediction mode, of the pixel point of the target coding block according to the second adjoined block, wherein N is a natural number more than 1; and determining a prediction mode used for the estimation of the target coding block from the first prediction mode and the N types of prediction modes, and predicting the pixel of the target coding block according to the determined prediction mode. The embodiment of the invention reduce the space distance between a predicted pixel and a reference pixel thereof, and therefore coding efficiency is enhanced.

Description

technical field [0001] The present invention relates to the field of data encoding, in particular to an intra-frame prediction method or device for estimating pixel values. Background technique [0002] The basic principle of video coding and compression is to use the correlation between the space domain, time domain and codewords to remove redundancy as much as possible. The current popular approach is to use a block-based hybrid video coding framework to achieve video coding and compression through steps such as prediction, transformation, quantization, and entropy coding. This coding framework shows strong vitality. From the earliest MPEG-1 to the latest video coding standard MPEG-4AVC / H.264, this block-based hybrid video coding framework is still used. [0003] Under the block-based hybrid video coding framework, there are mainly two types of coding techniques: [0004] 1) Intra coding, the basic principle is to use spatial correlation, such as using intra prediction (...

AI Technical Summary

Problems solved by technology

[0007] In the future, people's demand for high-definition video transmission and storage will show explosive growth. However, the development of information network infrastructure such as the Internet, communication network, and broadcasting network is relatively lagging behind, and network bandwidth is still a bottleneck.

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