Image compression and encryption using tree structures
Pattern Recognition Letters - special issue on pattern recognition in practice V
MPEG Video Encryption Algorithms
Multimedia Tools and Applications
Selective image encryption using JBIG
CMS'05 Proceedings of the 9th IFIP TC-6 TC-11 international conference on Communications and Multimedia Security
Partial encryption of compressed images and videos
IEEE Transactions on Signal Processing
A virtual image cryptosystem based upon vector quantization
IEEE Transactions on Image Processing
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We propose a new and efficient method to develop secure image-encryption techniques. The new algorithm combines two techniques: encryption and compression. In this technique, a wavelet transform was used to decompose the image and decorrelate its pixels into approximation and detail components. The more important component (the approximation component) is encrypted using a chaos-based encryption algorithm. This algorithm produces a cipher of the test image that has good diffusion and confusion properties. The remaining components (the detail components) are compressed using a wavelet transform. This proposed algorithm was verified to provide a high security level. A complete specification for the new algorithm is provided. Several test images are used to demonstrate the validity of the proposed algorithm. The results of several experiments show that the proposed algorithm for image cryptosystems provides an efficient and secure approach to real-time image encryption and transmission.