Video dual-compression detecting method based on prediction residue abnormal mode

A prediction residual and double compression technology, applied in digital video signal modification, electrical components, image communication, etc., can solve problems such as difficulties in video judicial evidence collection

Active Publication Date: 2017-01-04
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

At the same time, there are many powerful video editing software on the market, with which the original video can be easily tampered with, which brings difficulties to video judicial evidence collection

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  • Video dual-compression detecting method based on prediction residue abnormal mode
  • Video dual-compression detecting method based on prediction residue abnormal mode
  • Video dual-compression detecting method based on prediction residue abnormal mode

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[0067] 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 changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0068] According to the video double compression detection method based on the prediction residual abnormal mode provided by the present invention, comprising the following steps:

[0069] Step 1: Extract the prediction residual of each frame of the video;

[0070] Step 2: Calculate the prediction residual distribution for each frame;

[0071] Step 3: Using the Jensen-Shannon divergence, calculate the difference between the prediction residual distributions of two adjacent frames, and obtain the Jensen...

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Abstract

The invention provides a video dual-compression detecting method based on a prediction residue abnormal mode. The video dual-compression detecting method based on the prediction residue abnormal mode comprises the following steps: step 1, extracting prediction residue of each frame of a video; step 2, calculating prediction residue distribution of each frame; step 3, calculating difference of prediction residue distribution of each two adjacent frames by Jensen-Shannon divergence, and calculating a Jensen-Shannon divergence sequence; step 4, denoising the Jensen-Shannon divergence sequence by a median filtering method to obtain a final feature sequence; and step 5, carrying out time domain analysis on the feature sequence, judging whether the corresponding video is subjected to video dual-compression, and if the corresponding video is subjected to dual-compression, further speculating GOP length when the video is compressed for the first time. The method is different from any methods for carrying out dual-compression detection on videos in the prior art, and is a new effective detecting method.

Description

technical field [0001] The present invention relates to the field of video double compression detection, in particular to a video double compression detection method based on prediction residual abnormal mode. Background technique [0002] With the continuous development of the electronic industry and multimedia technology, digital video acquisition equipment is also becoming more and more popular. At the same time, there are many powerful video editing software on the market, with which the original video can be easily tampered with, which brings difficulties to video judicial evidence collection. Therefore, video tampering forensics technology has become a very important research topic. [0003] The purpose of digital video tampering forensics is to analyze and identify the originality and authenticity of video content. Related research includes inter-frame tampering forensics, forensics tampering within video frames, etc. Among them, most tampering methods need to go th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/114H04N19/176H04N19/70
CPCH04N19/114H04N19/176H04N19/70
Inventor 蒋兴浩孙锬锋陈晟
Owner SHANGHAI JIAO TONG UNIV
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