A robust privacy protection scheme for stereoscopic medical images based on fractal chaos
Taking three-dimensional (3D) two-wing chaotic system as the seed, we propose in this paper, a 3D four-wing chaotic system based on fractal. The dynamic characteristics of complex chaotic attractors are analyzed using the Lyapunov exponent and the Poincare cross-section. The results show that chaoti...
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| Veröffentlicht in: | Nonlinear dynamics 2023-10, Vol.111 (20), p.19425-19445 |
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| container_title | Nonlinear dynamics |
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| creator | Chang, Ruiyun Feng, Xiufang Zhang, Hao Yan, Pengfei |
| description | Taking three-dimensional (3D) two-wing chaotic system as the seed, we propose in this paper, a 3D four-wing chaotic system based on fractal. The dynamic characteristics of complex chaotic attractors are analyzed using the Lyapunov exponent and the Poincare cross-section. The results show that chaotic sequences with fractal transformation have high complexity and all NIST SP800-22 test data are greater than 0.01. A selective encryption scheme based on mask fusion for stereo medical images was proposed from the fractal chaos system. First, the stereo medical images were divided into upper, middle and lower parts of the image, from which, a portion of it was selected for the region of interest of the mask division. The three-part masks were merged and the entire stereo image was divided into background region and region of interest according to the mask. Then, the region of interest is extracted and converted into a new cube, and a cube rotation scrambling diffusion algorithm is designed. Finally, audio data containing the patient’s medical information and diagnostic information is embedded in the encrypted region of interest as a watermark. After testing and performance analysis, the algorithm has good encryption and watermarking performance, the histogram and scatter plot adheres to approximate uniform distribution, can resist various attacks, and has a higher security level and faster encryption speed. |
| doi_str_mv | 10.1007/s11071-023-08900-1 |
| format | Article |
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Finally, audio data containing the patient’s medical information and diagnostic information is embedded in the encrypted region of interest as a watermark. 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| subjects | Algorithms Audio data Automotive Engineering Chaos theory Classical Mechanics Complexity Control Dynamic characteristics Dynamical Systems Encryption Engineering Fractal transforms Fractals Liapunov exponents Mechanical Engineering Medical imaging Original Paper Vibration Watermarking |
| title | A robust privacy protection scheme for stereoscopic medical images based on fractal chaos |
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