Joint image encryption and compression scheme based on IWT and SPIHT |
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| Institution: | 1. National Engineering School of Tunis, Tunisia;2. Mathematics Department, computer science laboratory, Faculty of Science, Menoufia University, Shebin El-Koom 32511, Egypt;3. Lumina-The University of South-East Europe, IT&C Department, Bucharest 021187, Romania;1. Department of ECE, KITS Warangal, India;2. School of Computing Science and Engineering, VIT Bhopal University, India;3. Department of Computer Science and Engineering, R.M.K Engineering College, Chennai, India;4. Department of Electronics and Communication Engineering,Lakireddy Bali Reddy College of Engineering, Andhra Pradesh, India;5. Department of CS, CHRIST (Deemed to be University), Banglore, India;6. Department of CSE, Priyadarshini Indira Gandhi College of Engineering, Nagpur, India;1. National ASIC System Engineering Technology Research Center, Southeast University, Nanjing, China;2. Singapore University of Technology and Design, Singapore |
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| Abstract: | A joint lossless image encryption and compression scheme based on integer wavelet transform (IWT) and set partitioning in hierarchical trees (SPIHT) is proposed to achieve lossless image encryption and compression simultaneously. Making use of the properties of IWT and SPIHT, encryption and compression are combined. Moreover, the proposed secure set partitioning in hierarchical trees (SSPIHT) via the addition of encryption in the SPIHT coding process has no effect on compression performance. A hyper-chaotic system, nonlinear inverse operation, Secure Hash Algorithm-256(SHA-256), and plaintext-based keystream are all used to enhance the security. The test results indicate that the proposed methods have high security and good lossless compression performance. |
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| Keywords: | Image encryption and compression IWT SSPIHT Hyper-chaotic system Inverse operation |
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