Mutual image-based authentication framework with JPEG2000 in wireless environment
EURASIP Journal on Wireless Communications and Networking
MobiMedia '06 Proceedings of the 2nd international conference on Mobile multimedia communications
Overview on selective encryption of image and video: challenges and perspectives
EURASIP Journal on Information Security
A new class of reciprocal-orthogonal parametric transforms
IEEE Transactions on Circuits and Systems Part I: Regular Papers
A multi-scale triangular mapping and its applications in variation scale scrambling
International Journal of Computer Applications in Technology
IWDW'10 Proceedings of the 9th international conference on Digital watermarking
Data hiding method based on local image features
AMT'12 Proceedings of the 8th international conference on Active Media Technology
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Image-scrambling schemes are designed to render the image content unintelligible. Wyner has proposed an elegant one-dimensional (1-D) scrambling scheme without bandwidth expansion, making use of the discrete prolate spheroidal sequences (DPSS). The DPSS are optimal regarding their energy concentration in a given frequency subband. In this paper, we propose the two-dimensional (2-D) extension and application of this algorithm. We discuss new possibilities introduced by the 2-D approach. We also include experimental results.