Video tamper detection method and device based on time-domain perceptual hashing

A technology of perceptual hashing and tampering detection, which is applied in the fields of digital video signal modification, image communication, electrical components, etc., can solve the problems of complex video tampering detection, slow detection speed, low accuracy, etc. Effect

Inactive Publication Date: 2014-04-23
SHENZHEN UNIV
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and device for video tampering detection based on time-domain perceptual hashing in view of the above-mentioned defects of the prior art, aiming at solving the problems of complicated video tampering detection and slow detection speed in the prior art. low accuracy problem

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  • Video tamper detection method and device based on time-domain perceptual hashing
  • Video tamper detection method and device based on time-domain perceptual hashing
  • Video tamper detection method and device based on time-domain perceptual hashing

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[0047] The present invention provides a video tampering detection method and device based on time-domain perceptual hashing. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] see figure 1 , figure 1 The flowchart of the video tampering detection method based on time-domain perceptual hash provided by the present invention, such as figure 1 As shown, the method includes:

[0049] S100. Perform the same random block segmentation on each frame of the video to be inspected; calculate the average brightness value of each block with each frame as a unit, and count the changes in the average brightness value of each block on the time domain cha...

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Abstract

The invention discloses a video tamper detection method and a video tamper detection device based on time-domain perceptual hashing. The method comprises the steps of performing the same random partitioning on each frame of image in a to-be-detected video; calculating the brightness mean value of each partition by taking each frame as a unit, and counting the brightness mean value change condition of each partition on a time-domain passage for forming a time-domain feature matrix of the to-be-detected video; quantizing the time-domain feature matrix to obtain a corresponding hashing sequence; extracting a hashing sequence corresponding to an original video with the same video length; calculating the time-domain feature distance between the to-be-detected video and the original video according to the hashing sequences of the to-be-detected video and the original video; comparing the time-domain feature distance with a set threshold value, if the time-domain feature distance is smaller than the threshold value, the to-be-detected video is determined to be not tampered, and otherwise, the to-be-detected video is determined to be tampered. The video tamper detection speed and accuracy are greatly improved.

Description

technical field [0001] The present invention relates to the field of video detection, in particular to a video tampering detection method and device based on time-domain perceptual hashing. Background technique [0002] With the rapid development of digital multimedia technology, video media applications gradually occupy the main share of network multimedia applications. Facing the extremely inflated amount of information and more and more ways of using it, the problem of video information security and the management of large-scale video file databases have become increasingly prominent, which has become a major bottleneck restricting the development of multimedia technology and related disciplines. How to manage video information Copyright protection, how to accurately and quickly detect and locate tampered videos, and how to detect suspicious video content from massive video data are all problems that need to be solved urgently. At the same time, today's video processing ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/154H04N19/142H04N19/176H04N19/94
Inventor 文振焜
Owner SHENZHEN UNIV
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