A method for controlling the complexity of hevc decoding based on video saliency

Abstract

The invention discloses an HEVC (High Efficiency Video Coding) decoding complexity control method based on video significance and belongs to the field of video decoding. According to the method, firstly, the significance of each LCU (Largest Coding Unit) is predicted through a region significance detection algorithm of an HEVC compression domain; secondly, a plurality of training videos are selected to train function relationships between deblocking filters / simplification movement compensation and decoding complexity / video sensing distortion, and an HEVC decoding complexity control and sensing quality optimization equation is established according to a significance map and the function relationships; and finally the equation is solved, thereby precisely controlling HEVC decoding complexity and ensuring the sensing distortion to be least. The method has the advantages that when the decoding complexity is controlled, the sensing quality of a video is ensured to the greatest extent, a user can carry out decoding according to target complexity appointed by a set demand at a decoding end, so that HEVC decoding can be widely applied to terminal devices with different computing capabilities or different electric quantities, or video playing can be finished in appointed time under a certain electric quantity.

Description

technical field [0001] The invention belongs to the field of video decoding, in particular to a video saliency-based HEVC decoding complexity control method. Background technique [0002] In the field of video decoding, complexity control has an important impact on video decoding; decoding complexity control generally refers to reducing the original decoding complexity to any specified target complexity, while ensuring the minimum video distortion caused by complexity reduction. During the evolution of video coding standards, with the continuous improvement of coding efficiency, the complexity of video decoding is also increasing; reducing and controlling the complexity of video decoding has become a key issue in video decoding. [0003] The latest generation of high-efficiency video coding HEVC (High Efficiency Video Coding) standard can reduce spatio-temporal redundancy to meet the compression requirements of high-definition and even ultra-high-definition video. It has a f...

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Problems solved by technology

[0006] Aiming at the problem that there is currently no algorithm that can complete video decoding complexity control off-line, and the existing algorithm for reducing HEVC decoding complexity does not consider the optimization of perceptual quality, the present invention proposes a HEVC decoding complexity control based on video saliency method

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