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A Fast Selection Method of Skip Mode Based on Niemann-Pearson Criterion

A fast selection and mode technology, applied in the field of video coding, can solve the problems of affecting the application, limiting the HEVC coding speed, high power consumption, etc., to achieve the effect of improving the coding speed and reducing the calculation of the inter-frame prediction mode.

Active Publication Date: 2019-07-05
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

But the high performance of HEVC is at the cost of huge computational complexity
On the one hand, the high computational complexity produces high power consumption, which affects the promotion and application of HEVC on mobile devices; on the other hand, the high encoding complexity limits the encoding speed of HEVC, affecting its performance in low-latency scenarios. Applications

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  • A Fast Selection Method of Skip Mode Based on Niemann-Pearson Criterion
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  • A Fast Selection Method of Skip Mode Based on Niemann-Pearson Criterion

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[0023] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0024] Based on the new generation video coding standard High Efficiency Video Coding (HEVC), the present invention proposes a fast determination method for the SKIP mode in the inter-frame prediction process of HEVC, and the specific implementation steps are as follows:

[0025] Step 1: Online statistical learning of the first four frames in every 50 frames, and recording various parameters, specifically:

[0026] Use the standard process in HEVC to encode all CUs, and record that the optimal enc...

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Abstract

The invention provides a Neyman-Pearson criterion based SKIP mode rapidly selecting method. The method comprises steps that it is determined that prediction modes of a prediction unit are modeled as an "SKIP mode" and a "non-SKIP mode"; the rate distortion cost of the SKIP mode of a current coding unit is used as a decision-making feature; first four frames are counted and learned online, and when the optimal modes are respectively the SKIP mode and the non-SKIP mode, conditional probability distributions of the decision-making feature are obtained through non-parameter probability density estimation according to different quantitative parameters and different coding unit depths; and the SKIP modes of remaining frames are determined in advance by use of the Neyman-Pearson criterion according to statistic information learned online. On the basis of the Neyman-Pearson criterion, with false positive probability of the SKIP mode limited, false negative probability of the SKIP mode is reduced as much as possible, namely, while the rate distortion performance of coding is ensured, the coding speed is improved as much as possible.

Description

technical field [0001] The invention belongs to the technical field of video coding, and is based on the new-generation video coding standard High Efficiency Video Coding (HEVC), specifically a method for quickly judging the SKIP mode in the HEVC inter-frame prediction process. Background technique [0002] With the rapid development of multimedia technology and network communication technology, multimedia applications have covered all aspects of human life. Among them, video application is one of the most common technologies, and these video applications include video on demand, video surveillance, video conferencing, high-definition television, portable photography and videophone, etc. A large number of video applications will inevitably generate a large amount of video data. In order to meet the application requirements of high-definition video, the International Telecommunication Union-Telecom (ITU-T) Video Coding Experts Group (Video Coding Experts Group, VECG) and the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/503H04N19/51H04N19/567
Inventor 高志勇胡强石志儒张小云陈立王嘉
Owner SHANGHAI JIAOTONG UNIV
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