RST attack resistance stereo image zero watermark method based on FFST and Hessenberg decomposition

Abstract

The invention relates to an RST attack resistance stereo image zero watermark method based on FFST and Hessenberg decomposition. The method comprises a zero watermark generation part and a zero watermark detection part. An authentication zero watermark of a three-dimensional image is constructed by utilizing the double-viewpoint characteristic of the three-dimensional image and utilizing the sizerelation between absolute values of elements at the upper left corners in respective coefficient sub-blocks after paired random image blocks are decomposed in low-frequency sub-bands after fast finiteshear wave transformation (FFST) of the left viewpoint image and the right viewpoint image, and the method is simple, novel and high in robustness. Meanwhile, a fractional order Arnodo chaotic systemis adopted to generate a random sequence, and encryption of an original binary watermark image is achieved. Before watermark extraction, geometric attack correction is carried out on a to-be-authenticated three-dimensional image by using an image matching method based on Fourier-Merlin transform. Experimental results show that the method provided by the invention has good robustness for resistingvarious common image processing attacks such as noise addition, filtering, JPEG compression, shearing, rotation, zooming, translation (RST) attacks and the like.

Description

technical field [0001] The invention belongs to the technical field of information security and image processing, and in particular relates to a zero-watermarking method for a three-dimensional image against RST attack based on fast finite shearlet transform (FFST) and Hessenberg decomposition. [0002] technical background [0003] With the rapid development of Internet and multimedia technology, binocular stereo image processing technology has been gradually applied to 3D video conferencing, virtual reality, telemedicine, education, military and other aspects. The resulting problem is that the copyright protection of stereo images has become an urgent problem to be solved. As an information hiding technology, digital watermarking technology can provide solutions for copyright protection and content authentication of multimedia resources such as images, audio and video. As a special digital watermarking technology, zero watermark does not need to "directly embed" copyright ...

AI Technical Summary

Problems solved by technology

However, the stereoscopic image zero-watermarking methods described above are not robust and cannot resist geometric attacks such as rotation, scaling, and translation (RST)

Wang Chunpeng, Wang Xingyuan and others proposed a three-dimensional image zero-watermark algorithm based on ternary extreme harmonic-Fourier moments and chaotic mapping. Although it can resist a certain degree of geometric attacks, the construction and detection process of the authentication zero-watermark takes a relatively long time. time

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