Joint Image Compression and Encryption Using IWT with SPIHT, Kd-Tree and Chaotic Maps
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ID: 113767
2018
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Abstract
Confidentiality and efficient bandwidth utilization require a combination of compression and encryption of digital images. In this paper, a new method for joint image compression and encryption based on set partitioning in hierarchical trees (SPIHT) with optimized Kd-tree and multiple chaotic maps was proposed. First, the lossless compression and encryption of the original images were performed based on integer wavelet transform (IWT) with SPIHT. Wavelet coefficients undergo diffusions and permutations before encoded through SPIHT. Second, maximum confusion, diffusion and compression of the SPIHT output were performed via the modified Kd-tree, wavelet tree and Huffman coding. Finally, the compressed output was further encrypted with varying parameter logistic maps and modified quadratic chaotic maps. The performance of the proposed technique was evaluated through compression ratio (CR) and peak-signal-to-noise ratio (PSNR), key space and histogram analyses. Moreover, this scheme passes several security tests, such as sensitivity, entropy and differential analysis tests. According to the theoretical analysis and experimental results, the proposed method is more secure and decreases the redundant information of the image more than the existing techniques for hybrid compression and encryption.
| Reference Key |
nasrullah2018appliedjoint
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|---|---|
| Authors | Nasrullah;Jun Sang;Muhammad Azeem Akbar;Bin Cai;Hong Xiang;Haibo Hu;Nasrullah,;Sang, Jun;Akbar, Muhammad Azeem;Cai, Bin;Xiang, Hong;Hu, Haibo; |
| Journal | applied sciences |
| Year | 2018 |
| DOI |
10.3390/app8101963
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| URL | |
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