The recently introduced approach for Encrypted Image Folding is generalized to make it self-contained. The goal is achieved by enlarging the folded image so as to embed all the necessary information for the image recovery. The need for extra size is somewhat compensated by considering a transformation with higher folding capacity. Numerical examples show that the size of the resulting cipher image may be significantly smaller than the plain text one. The implementation of the approach is further extended to deal also with color images.
Bibliographical noteNOTICE: this is the author’s version of a work that was accepted for publication in Physica A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Rebollo-Neira, L, Bowley, J, Constantinides, AG & Plastino, A, 'Self-contained encrypted image folding' Physica A, vol. 391, no. 23 (2012) DOI http://dx.doi.org/10.1016/j.physa.2012.06.042
- encrypted image folding
- spase representations
- orthogonal matchinh pursuit