Background image updating method and device in video coding

A background image and video coding technology, which is applied to the background image update method and device field in video coding, can solve the problems of inability to meet high-performance requirements of real-time coding, high computational complexity, and affect coding efficiency, and improve update accuracy The effect of improving the extraction efficiency and reducing the amount of calculation

Active Publication Date: 2016-11-23
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

The goal of these methods is to extract a clean moving foreground, and most of the time, in order to remove the influence of disturbance, multiple background models will be maintained, and the computational complexity is high.
In video coding applications, most of the processed image resolutions are large resolutions such as 19201088. Direct application of mainstream methods cannot meet the high performance requirements of real-time coding. In addition, the background image in structured coding is expected to be best prese...

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  • Background image updating method and device in video coding
  • Background image updating method and device in video coding
  • Background image updating method and device in video coding

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[0024] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0026] The first embodiment of the present invention relates to a method for updating a background image in video coding. figure 1 It is a schematic flowchart of the method for updating the background image in the video coding.

[0027] Such as figure 1 As shown, the method for updating the background image in the video encoding includes the fol...

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Abstract

The invention relates to video processing, and discloses a background image updating method and device in video coding. The background image updating method in the invention comprises the following steps of: if a background image needs to be updated, judging whether a current frame is a still frame or not; if so, updating a first background image into the current frame; and if not, processing the background image according to a candidate background image obtained through background modelling. Background details can be well reserved in the background image; a good reference image is provided for extracting a foreground image and a subsequent coding background area; and furthermore, the background image extraction efficiency can be effectively increased.

Description

technical field [0001] The invention relates to video processing, in particular to a method and device for updating background images in video coding. Background technique [0002] The general idea of ​​the structured coding technology based on foreground and background separation is that the image to be coded is divided into two parts, the foreground and the background, through the background reconstruction technology. form a stream. [0003] Background reconstruction technology is a commonly used method in the field of video analysis. There are many mainstream methods, such as Gaussian background modeling, codebook model-based background reconstruction, non-parametric learning methods, and median filtering. The goal of these methods is to extract a clean moving foreground, and most of the time, in order to remove the influence of disturbance, multiple background models will be maintained, and the computational complexity is high. In video coding applications, most of the...

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Application Information

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IPC IPC(8): H04N19/142H04N19/513
Inventor 童俊艳浦世亮沈林杰马程呼志刚张文聪俞海
Owner HANGZHOU HIKVISION DIGITAL TECH
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