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Video compression method and device

A video compression, video frame technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problem of large video transmission bandwidth, and achieve the effect of reducing network load, capacity, and pixel value.

Inactive Publication Date: 2020-08-25
北京电信易通信息技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a video compression method and device, by adopting an innovative video compression method, to solve the technical problem that the existing video transmission bandwidth is too large

Method used

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  • Video compression method and device

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Embodiment 1

[0035] The invention provides a video compression method, comprising the following steps:

[0036] Step 1: Based on the H.265 standard video compression reference frame mechanism, obtain the predetermined value constant of the background change preset by the program, and set the predetermined value constant of the background change to the predetermined value of the dynamic background change; set the change in different video frames to be less than the dynamic The scene whose background changes a predetermined value is defined as the background; the scene whose change is greater than or equal to the predetermined value in different video frames is defined as the foreground;

[0037]Step 2: using the H.265 video compression reference frame mechanism to encode the background and the foreground with different reference frames; wherein, high encoding is used for the foreground, and low encoding is used for the background;

[0038] Step 3: using a multi-frame averaging algorithm, in...

Embodiment 2

[0056] On the basis of Embodiment 1, this embodiment further provides a video compression device, including:

[0057] Scene definition module: used for based on the H.265 standard video compression reference frame mechanism, to obtain the predetermined value constant of the background change preset by the program, and set the predetermined value constant of the dynamic background change to the predetermined value constant of the background change; the change in different video frames is less than The scene in which the dynamic background changes a predetermined value is defined as the background; the scene in which the change in different video frames is greater than or equal to the predetermined value is defined as the foreground;

[0058] Encoding module: used to encode the background and the foreground using different reference frames using the H.265 video compression reference frame mechanism; wherein, high encoding is used for the foreground, and low encoding is used for t...

Embodiment 3

[0064] Such as figure 1 As shown, this embodiment provides a video compression method on the basis of the above embodiments, including the following steps:

[0065] 1. In view of the long-term invariable characteristics of the I-frame background, redundant information brought by repeated I-frames is removed;

[0066] 2. The P frame uses a selective frame skipping method to reduce the amount of data;

[0067] 3. For the jumpy feeling that may be brought to the video after the P frame is skipped, the frame interpolation reconstruction method is used to reduce the jumpy feeling. This method only uses frames with a smaller code stream after compression to update the background image.

[0068] 4. The update algorithm basically adopts the multi-frame average algorithm, but with some restrictions. In this way, the ghost phenomenon of the traditional multi-frame averaging method can be effectively avoided, and the influence of improper value setting on the update result can be remo...

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Abstract

The invention aims to provide a video compression method and device, and solves the technical problem that the existing video transmission bandwidth is excessively occupied by adopting an innovative video compression mode. The method comprises the following steps: 1, setting a dynamic background change predetermined value based on H.265, defining a scene of which the change is lower than the predetermined value as a background, and defining other scenes as foregrounds; 2, adopting H.265 to adopt high coding for the foreground, and adopting low coding for the background; 3, removing repeatedlyappearing I frames by adopting a multi-frame averaging algorithm, and filtering out redundant and repeated information for the P frames; 4, eliminating particle noise generated in the video by adopting a frequency division filter; and 5, calculating and comparing a previous frame and a following frame, and cutting a static frame scene to obtain a compressed video file. The video compression devicecomprises a scene definition module, a coding module, a data compression module, a data denoising module and a compressed video generation module. According to the invention, the size of the video file can be further compressed.

Description

technical field [0001] The present invention relates to the technical field of video image compression processing, in particular to a video compression method and device. Background technique [0002] With the rapid development of network communication technology and the multimediaization of network services, a large number of multimedia applications have emerged and entered every aspect of people's lives. Such as remote video surveillance, real-time video streaming service, smart transportation, smart community and so on. This will increase the load capacity requirements of the network, so there are many key technologies to be studied and solved, such as 1. High compression ratio multimedia data compression; 2. Data storage; 3. The pressure of transmission bandwidth and other issues. The key to solving these problems is to effectively compress the collected data with high quality. [0003] Currently, video encoding technologies in the prior art include: MJPEG, H.264, MPEG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/42H04N19/117H04N19/85H04N19/51
CPCH04N19/117H04N19/42H04N19/51H04N19/85
Inventor 文彬
Owner 北京电信易通信息技术股份有限公司
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