Data erasing method of steganography data of digital image

Abstract

The invention discloses a data erasing method of steganography data of a digital image. The method comprises: carrying out fast Fourier transform or discrete cosine transform on a frame of an inputted image or video; carrying out band-pass filtering processing on the transformed data by using a preset filtering algorithm; carrying out inverse fast Fourier transform or inverse discrete cosine transform on the data after the band-pass filtering processing to restore the frame of the image or video; carrying out region division on the restored frame of the image or video; carrying out rotation on the divided regions according to a preset angle; and carrying out restoration on the frame of the image or video by using an image restoration algorithm. Therefore, the data hidden in the image or video frame in a steganography manner can be erased or disturbed rapidly and thus the receiver can not extract the hidden data, so that an objective of preventing information leakage is achieved. The fast Fourier transform is applied to erase hidden data; and band-pass filtering processing is carried out by combining feature information of the image or video frame, so that hidden data can be erased or disturbed.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for erasing digital image steganographic data. Background technique [0002] In the past few decades, steganography based on multimedia images has been a research hotspot, and various new steganographic algorithms have emerged in an endless stream. On the other hand, the detection methods for steganography are also in continuous research. Although some steganographic methods have certain effects, for a wide variety of steganographic methods, detection methods are like looking for a needle in a haystack, and existing technologies are difficult. Realize the detection of steganography. In terms of carrier, the initial steganography technology mostly used pictures as the carrier, but with the rise of streaming media services and video sharing websites, the steganography using pictures as the carrier gradually tends to the video carrier that can carry more data....

AI Technical Summary

Problems solved by technology

[0004] Therefore, the existing steganography technologies are ever-changing and emerge in endlessly, and when it is very difficult to detect steganography, under the premise of preventing data leakage, scramble or erase the data steganographically written in the carrier, so that the data hidden in the It is particularly important that the data in the carrier is difficult to be extracted, and it is also a practical method

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