期刊
SIGNAL PROCESSING
卷 132, 期 -, 页码 96-109出版社
ELSEVIER
DOI: 10.1016/j.sigpro.2016.10.003
关键词
Bit-plane decomposition; Chaotic map; dge map; Medical image encryption
资金
- Macau Science and Technology Development Fund [FDCT/016/2015/A1]
- Research Committee at University of Macau [MYRG 2014-00003-FST, MYRG 2016-00123-FST]
This paper presents a medical image encryption algorithm using edge maps derived from a source image. The algorithm is composed by three parts: bit-plane decomposition, generator of random sequence, and permutation. It offers users the following flexibilities: (1) any type of images can be used as the source image; (2) different edge maps can be generated by various edge detectors and thresholds; (3) selection of appropriate bit-plane decomposition method is flexible; (4) many permutation methods can be cascaded with the proposed algorithm. A significantly large key space and strong key sensitive are possessed by the proposed algorithm to protect different types of medical images. Furthermore, it has a wider applicability than other methods for fuzzy edge maps. Experiments and security analysis further demonstrate that it has a strong resistance against various security attacks and outperforms other state-of-the-art methods.
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