Steganalysis method based on image smoothness variation characteristics

Abstract

The invention discloses a steganalysis method based on image smoothness variation characteristics, which comprises a process for extracting image smoothness and a process for extracting image smoothness variation characteristics, wherein the process for extracting the image smoothness comprises a segment covering step and a smoothness calculating step; the segment covering step comprises: covering the segment in a zero-degree direction, covering the segment in a 45-degree direction, covering the segment in a 90-degree direction and covering the segment in a 135-degree direction, selecting parameters after the segments are covered and calculating the image smoothness; the process for extracting the image smoothness variation characteristics comprises the following four steps: calculating the image smoothness characteristics before writing hidden information, writing hidden information by using the steganography to be analyzed, calculating the image smoothness characteristics after writing hidden information and calculating the smoothness variation characteristics. In the method, the hidden information writing of a grey image based on least significant bit (LSB) and histogram modification can be analyzed and the accuracy of the method is high for the two steganographies.

Description

technical field [0001] The invention belongs to the field of information hiding detection, in particular to a steganalysis method based on the feature of image smoothness variation. Background technique [0002] Since the early 1990s, information hiding, as an important topic in information security, has attracted the attention of international academic circles. First of all, the research on digital watermarking for copyright protection of multimedia products is rapidly increasing, and the number of published papers is increasing year by year, and many companies developing digital watermarking products have emerged as the times require. In the past ten years, the struggle between forward hiding technology and reverse detection technology has intensified, and it has become the focus of research in the field of information security. [0003] Since modern information hiding technology is a new covert communication technology, it has broad application prospects in the military,...

AI Technical Summary

Problems solved by technology

Due to its versatility, the general steganalysis method analyzes many steganographic methods, but at the same time, the accuracy rate is also low. Different steganographic methods usually have different effects.

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