- 期刊
A Chaos-based Visual Encryption Mechanism in JPEG2000 Medical Images
並列摘要
In this paper, we have developed a chaos-based visual encryption mechanism which can be applied in the JPEG2000 medical image. The main idea for using chaos sequence is to increase the unpredictability compared with other kinds of random sequences. Thus, our mechanism is based on an all-pass filtering implementation of a 2D chaotic phase scrambler, and a chaos-based permutation scheme. A way to realize the all-pass filtering is to scramble the phase spectra of the input JPEG2000 image by adding 2D chaotic signal to randomize reference phase spectra as pre-filtering, and then subtract the same reference phase spectra as post-filtering, to recover the original phase spectra of the most-important low-resolution sub-image. A single-layer chaotic image pixel scanning order encryption is applied to the least-important detail sub-images. Simulation results show when a correct deciphering parameter is put in, the signal will be completely recovered, and the peak signal-to-noise ratio (PSNR) value of the decrypted image is 61.9901 dB when using lossless JPEG2000 compression mode and 35 dB when using 10:1 JPEG2000 compression mode. In addition, the PSNR loss is about 3dB for the proposed loss visual encryption mechanism. As long as there is an input parameter error, for example, with 0.00000001% initial point error, it will make an error chaotic array, and the image will not be recovered.
延伸閱讀
- Niu, Y., Zhang, X., & Han, F. (2017). Image Encryption Algorithm Based on Hyperchaotic Maps and Nucleotide Sequences Database. Computational Intelligence and Neuroscience, 2017(), 1-9. https://doi.org/10.1155/2017/4079793
- Maadeed, S. A., Ali, A. A., & Abdalla, T. (2012). A New Chaos-Based Image-Encryption and Compression Algorithm. Journal of Electrical and Computer Engineering, 2012(), 130-140. https://doi.org/10.1155/2012/179693
- 葉偉良（2021）。Using Deep Learning on Medical Images with Learnable Image Encryption and Privacy Preservation〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-2412202116174896
- 林建良（2005）。Study of JPEG2000 in the Application of Medical Images〔碩士論文，中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu200500807
- Zhang, Q. Y., & Ye, Y. T. (2022). JPEG Image Encryption Algorithm Based on Hyperchaotic, Mixed Hash and Dynamic DNA. International Journal of Network Security, 24(2), 216-229. https://doi.org/10.6633/IJNS.202203_24(2).04