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Fast coding method for screen content video coding

A screen content, fast coding technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problems of unfavorable real-time application of video coding, high coding computational complexity, etc., to avoid inaccurate classification and reduce coding complexity speed and save coding time

Active Publication Date: 2018-09-04
NINGBO UNIV
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Problems solved by technology

The introduction of the above-mentioned new coding technologies brings high coding computational complexity while bringing high rate-distortion performance and coding compression efficiency, which is not conducive to the real-time application of video coding

Method used

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  • Fast coding method for screen content video coding
  • Fast coding method for screen content video coding
  • Fast coding method for screen content video coding

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] A fast encoding method for screen content video encoding proposed by the present invention, its overall flow diagram is as follows figure 1 As shown, it includes the following steps:

[0044] Step 1): Define the currently to-be-processed screen content image in the screen content video to be encoded as the current frame.

[0045] Step 2): Define the current coding tree unit to be processed in the current frame as the current coding tree unit.

[0046] Step 3): Define the coding unit currently to be coded in the current coding tree unit as the current coding unit.

[0047] Step 4): Calculate the variance of the pixel values ​​of all pixels in the current coding unit, denoted as Var, and as the first feature of the current coding unit; calculate the total number of all edge pixels in the current coding unit and the current coding unit ...

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Abstract

The invention discloses a fast coding method for screen content video coding. Coding units are classified according to content characteristics of a screen content video; different prediction modes areadopted according to different types of the coding units; the coding complexity in the prediction process can be reduced; the coding units can be classified more accurately through a BP neural network; therefore, rate-distortion performance loss due to inaccurate classification of the coding units can be avoided; the complexity of the coding units is measured through a gray-level co-occurrence matrix; furthermore, in combination with the correlation of time and spatial domains, the coding depth can be set more accurately; and a lot of coding time can be saved.

Description

technical field [0001] The invention relates to a video signal processing method, in particular to a fast coding method for screen content video coding. Background technique [0002] With the rapid development of science and technology, people have higher and higher requirements for video viewing and processing. With the rapid update of network technology and streaming media technology, the rise of high-definition, ultra-high-definition and other video technologies, the methods of video acquisition, processing and playback are increasing. There is an increasing need for Screen Content Video (SCV) due to applications such as video conferencing, distance education, screen sharing, wireless displays, and more. There are four main types of screen content video: video with moving text and graphics, mixed content video, animation, and video captured by a camera. [0003] In order to better meet the requirements of video processing, in January 2013, the Joint Collaborative Team o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/136H04N19/172H04N19/96
CPCH04N19/136H04N19/172H04N19/96
Inventor 彭宗举胡晴晴陈芬蒋刚毅郁梅陈华
Owner NINGBO UNIV
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