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ICMCS
2006
IEEE
133views Multimedia» more  ICMCS 2006»
16 years 22 days ago
A Captcha Based on the Human Visual Systems Masking Characteristics
In this paper, a CAPTCHA is presented based on the masking characteristics of the Human Visual System (HVS). Knowing that noise can be masked by high activity regions and showing ...
Rony Ferzli, Rida A. Bazzi, Lina J. Karam
ACNS
2005
Springer
138views Cryptology» more  ACNS 2005»
16 years 7 days ago
Indexing Information for Data Forensics
We introduce novel techniques for organizing the indexing structures of how data is stored so that alterations from an original version can be detected and the changed values speci...
Michael T. Goodrich, Mikhail J. Atallah, Roberto T...
PRICAI
2004
Springer
16 years 1 days ago
Adaptive Model for Foreground Extraction in Adverse Lighting Conditions
Background elimination models are widely used in motion tracking systems. Our aim is to develop a system that performs reliably under adverse lighting conditions. In particular, th...
Stewart Greenhill, Svetha Venkatesh, Geoff A. W. W...
LAWEB
2003
IEEE
15 years 12 months ago
Cooperation Schemes between a Web Server and a Web Search Engine
Search engines provide search results based on a large repository of pages downloaded by a web crawler from several servers. To provide best results, this repository must be kept ...
Carlos Castillo
ICPR
2002
IEEE
15 years 11 months ago
Segmentation of Vector Fields by Critical Point Analysis: Application to Brain Deformation
MRI examinations may be used to monitor the progress of neurological disease. Arising structural changes can then be quantified using non-rigid registration procedures. However, ...
Gert Wollny, Marc Tittgemeyer, Frithjof Kruggel