LAYERED ENCRYPTION TECHNIQUES FOR DCT-CODED VISUAL DATA (WedAmPO4)

Author(s) : Mark Fisch (CTI, Austria) Herbert Stögner (CTI, Austria) Andreas Uhl (CTI & Salzburg University, Austria)

Abstract : Selective encryption technology can be applied efficiently to visual data in scalable representation. In this work we experimentally compare different ways to represent DCT-encoded visual data in a scalable way in terms of their suitability for partial encryption. We find that MPEG-2 SNR scalability is superior to several other approaches.

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