Sparsity and `Something Else': An Approach to Encrypted Image Folding

Details Sparsity and `Something Else': An Approach to Encrypted Image Folding Sparsity and `Something Else': An Approach to Encrypted Image Folding

2009-09-10

arxiv.org/abs/0909.2017v4

IEEE Signal Processing Letters, Vol. 8 No 3, 189--192, 2011

Computer Science

Computer Vision and Pattern Recognition

Revised manuscript- Software for implementing the Encrypted Image Folding proposed in this paper is available at http://www.

Scientific paper

10.1109/LSP.2011.2106496

A property of sparse representations in relation to their capacity for information storage is discussed. It is shown that this feature can be used for an application that we term Encrypted Image Folding. The proposed procedure is realizable through any suitable transformation. In particular, in this paper we illustrate the approach by recourse to the Discrete Cosine Transform and a combination of redundant Cosine and Dirac dictionaries. The main advantage of the proposed technique is that both storage and encryption can be achieved simultaneously using simple processing steps.

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