Secondary compression detection method based on H.264/AVC (Advanced Video Coding) video
A technology of secondary compression and detection method, which is applied in the direction of digital video signal modification, electrical components, image communication, etc., and can solve problems such as incomplete content
Inactive Publication Date: 2014-02-19
SUN YAT SEN UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If it can be detected that the video has undergone two compressions, then such a video is suspicious and its content may be incomplete
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0042] Such as figure 2 Shown is a kind of flow chart based on H.264 / AVC video secondary compression detection method of the present invention, and it specifically comprises the following steps:
[0043] (S1) Establish a secondary compression video classification training model, specifically:
[0044] (S11) Perform primary compression and secondary compression on the uncompressed video template sequence to obtain primary compressed video library and secondary compressed video library; specifically:
[0045] (S111) Perform H.264 / AVC compression on the uncompressed video template sequence with the second quantization parameter to obtain a compressed video library; the video template sequence uses a YUV video sequence, and uses the second quantization parameter QP2 for each YUV video sequence. H.264 / AVC compression to obtain a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the field of multimedia information safety and particularly relates to a secondary compression detection method based on an H.264 / AVC (Advanced Video Coding) video. The method comprises the following steps of: carrying out primary compression on an uncompressed video sample plate sequence according to second quantization parameters to obtain a primary compressed video library; after carrying out the primary compression on the uncompressed video sample plate sequence according to first quantization parameters, decompressing and carrying out secondary compression according to second quantization parameters to obtain a secondary compressed video library; extracting feature vectors of a primary compressed video sequence and a secondary compressed video sequence; utilizing a classifier to train the feature vectors of the primary compressed video sequence and the secondary compressed video sequence to obtain a classification training model; extracting the feature vectors of videos to be detected and utilizing the classification training model to perform prediction and classification to divide the videos to be detected into two classes, namely primary compressed videos and secondary compressed videos. According to the secondary compression detection method provided by the invention, the videos subjected to the secondary compression can be effectively detected.
Description
technical field [0001] The invention belongs to the field of multimedia information security, and in particular relates to a secondary compression detection method based on H.264 / AVC video. Background technique [0002] With the advancement of computer technology and the popularization of video processing software (such as VideoStudio, Adobe Premier, etc.), it is becoming easier for ordinary users to operate videos. If an attacker maliciously tampers with the video, such as deleting frames containing key information and inserting tampered frames, the content of the video will be affected, and at the same time, the user's judgment of the facts will be biased. Therefore, it is becoming more and more urgent to verify the integrity of video content in court forensics, digital media copyright protection and other situations. On the other hand, in order to save storage space and bandwidth, most videos are stored or distributed in the form of compressed streams. At the source of ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/61H04N19/625
Inventor 刘红梅廖丹丹
Owner SUN YAT SEN UNIV