Title :
An image encryption scheme based on image complexity
Author :
Pan, Feng ; Wang, ChuanCai ; Chen, XiaoNan
Author_Institution :
Key Lab. of Network & Inf. Security, Eng. Coll. of Armed Police Force, Xi´´an, China
Abstract :
This paper is concerned with the image encryption scheme based on image complexity, which can satisfy the need of multi-level quality of service. Firstly, each subband of DWT (Discrete Wavelet Transform) coefficient is analyzed. Then, image is cut into blocks. Variances of DWT coefficients are considered as parameters to evaluate complexity of each block. Finally, as to accomplish a controllable visual effect of the encrypted image, each subblock is encrypted with the corresponding intensity according to different complexity. In the scheme, we emphasize the details of each image, which is consistent with human vision sensation. Experimental results prove that the scheme is feasible and efficient.
Keywords :
cryptography; data visualisation; discrete wavelet transforms; image watermarking; quality of service; DWT coefficient; blocks; controllable visual effect; discrete wavelet transform; human vision sensation; image complexity; image encryption scheme; multilevel quality of service; Complexity theory; Encryption; Humans; Pixel; Transforms; chaotic encryption; image complexity; variance; wavelet coefficients;
Conference_Titel :
Information Theory and Information Security (ICITIS), 2010 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6942-0
DOI :
10.1109/ICITIS.2010.5689565
