Reversible embedding method based on adaptive modification of multiple difference histograms

Abstract

The invention is applicable to the field of reversible information hiding, and provides a reversible embedding method based on adaptive modification of a plurality of difference histograms, which comprises the following steps of: performing image difference calculation on an original image to obtain a difference sequence; classifying the difference values according to the pseudo-random sequence, uniformly dividing a difference value sequence into N parts, counting the number of the difference values, and generating N difference value histograms; a pair of extension points are selected for each difference histogram, secret information is embedded, and exhaustion optimization is adopted to obtain a parameter N, so that the offset of the difference histogram is minimum; obtaining a modification parameter, taking a pseudorandom sequence as a fixed rule for embedding each time, and modifying the pixel of the difference value histogram image; and recovering the carrier image and the secret information. The technical problems that according to most existing reversible hiding methods, after secret information is embedded into a carrier, a difference histogram can generate irregular changes, a peak value is not at a zero point position any more, and an attacker can easily find the secret information from statistical characteristics of the histogram are solved.

Description

technical field [0001] The invention belongs to the field of reversible information hiding, in particular to a reversible embedding method based on the adaptive modification of multiple difference histograms. Background technique [0002] With the advent of the comprehensive information age and the rapid development of the digital economy, information resources not only bring convenience to people, but also bring various information security issues such as information leakage, information resource copyright disputes, and difficulty in distinguishing the authenticity of information content. These problems have hindered the development of the digital economy, violated the rights and interests of individuals, and even threatened national security. How to properly handle the relationship between the massive growth of information and the development of the digital economy, strengthen the security protection of data resources throughout the life cycle, and ensure information secur...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a reversible embedding method based on adaptive modification of multiple difference histograms, which aims to solve most of the existing reversible hiding methods. After embedding secret information into the carrier, the difference histogram will produce Irregular changes, the peak is no longer the zero position, the attacker can easily find the technical problems of the existence of secret information from the histogram statistical characteristics

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