CRYPT Seminar

Title: “Scalable Watermarking for Image Authentication”

Speaker:  Angela Piper (University of Wollongong)

Day: Tuesday 15 September 2009
Location: Building 3. Common Staff Room
Time: 13.30-14.30

Abstract: Semi-Fragile watermarks allow the authentication of images by detecting and locating tampered regions while remaining largely unaffected by `allowed' changes, such as compression. Scalable compression allows a single compressed image to be decompressed to produce a variety of images, which have been scaled to suit the display or bandwidth requirements of the user. However, scalable compression causes a breakdown in the assumption used by most semi-fragile watermarks. In this talk, we discuss what goes wrong when semi-fragile watermarks are applied to scalably compressed images and explain the design features of a scalable watermark for JPEG2000 images that solves this problem.

Last reviewed: 15 October, 2009

Workshops and Seminars

Title:  Dealing With Imprecise Compliance Requirements
Speaker:  Evan Morrison
Day: Wednesday 10th March 2010
Location:
Building 3. Common Staff Room
Time: 11.30-12.30

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Trade Show & Research Showcase

The Schools of Computer Science and Software Engineering and Information Systems and Technology Annual Tradeshow & Research Showcase was held on Thursday 29 October 2009. 

Winner of research tradeshow

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