DMCA
Image Scrambling Without Bandwidth Expansion
| Citations: | 1 - 0 self |
BibTeX
@MISC{Van_imagescrambling,
author = {Dimitri Van and De Ville and Wilfried Philips and Rik Van De Walle and Ignace Lemahieu and Senior Member},
title = {Image Scrambling Without Bandwidth Expansion},
year = {}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Abstract—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. Index Terms—Conditional access, content protection, discrete prolate spheroidal sequences (DPSS), Hadamard matrix, image scrambling, orthogonal transforms. I.
Keyphrases
bandwidth expansion discrete prolate spheroidal sequence image content 2-d approach new possibility frequency subband index term conditional access content protection energy concentration image scrambling experimental result abstract image-scrambling scheme hadamard matrix orthogonal transforms
