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

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 ...

AI Technical Summary

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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