Method and apparatus for encoding and decoding using parallel intra prediction per coding unit

Abstract

Embodiments of the present invention relate to methods and apparatuses for encoding and decoding using parallel intra prediction per coding unit. More specifically, the embodiments of the present invention relate to an apparatus and method for image encoding / decoding, the method including the following steps: according to the direction of the intra prediction mode relative to the coding unit, using the leftmost original pixel value of the coding unit or the coding unit The pixel value of the upper left block of the coding unit is used to generate the left extrapolated pixel of the coding unit; the adjacent pixels including the left extrapolated pixel are used to perform intra prediction on the coding unit to generate a prediction block; encoding prediction information for a predicted prediction mode; and decoding the encoded bitstream.

Description

technical field [0001] Embodiments of the present disclosure relate to a method and apparatus for encoding and decoding using parallel intra prediction at the CU level, and more particularly, relate to being able to simultaneously perform multiple A video encoding / decoding method and apparatus for intra-predictive encoding of a coding unit block, and enabling video data compression in parallel to obtain a high-speed encoder and a high-speed decoder. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] In a video data compression device, intra-coding is performed by processing an efficiently compressed residual signal (obtained by effectively removing spatial redundancy in a frame or block) through a transform technique, quantization, and entropy encoding. [0004] Common intra-coding methods include intra-coding techniques based on directional extrapola...

AI Technical Summary

Problems solved by technology

However, since parallelism has at most a subsidiary block shape within the framework of a macroblock, parallelism cannot be easily implemented under the current multi-partition structure

In addition, since pixel values ​​far from the current auxiliary block are used as extrapolated predictors, compression efficiency will be reduced

This poses a limiting factor for video encoding and decoding by parallel processing systems of state-of-the-art multi-core processors and graphics processing units (GPU: graphic processing unit)

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