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CCS
2010
ACM
15 years 10 months ago
Scene tagging: image-based CAPTCHA using image composition and object relationships
In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
Peter Matthews, Cliff Changchun Zou
FC
2010
Springer
226views Cryptology» more  FC 2010»
15 years 10 months ago
Shoulder-Surfing Safe Login in a Partially Observable Attacker Model
Abstract. Secure login methods based on human cognitive skills can be classified into two categories based on information available to a passive attacker: (i) the attacker fully ob...
Toni Perkovic, Mario Cagalj, Nitesh Saxena
IE
2007
15 years 8 months ago
Dramatic flow in interactive 3D narrative
The concept of dramatic level is crucial for a model of dramatic flow. We present a framework to maintain optimal dramatic flow in an interactive 3D environment where both linea...
Alyx Macfadyen, Andrew Stranieri, John Yearwood
AVI
2004
15 years 8 months ago
A graph-based interface to complex hypermedia structure visualization
Complex hypermedia structures can be difficult to author and maintain, especially when the usual hierarchic representation cannot capture important relations. We propose a graph-b...
Manuel Freire, Pilar Rodríguez
HUC
2010
Springer
15 years 7 months ago
Throw your photos: an intuitive approach for sharing between mobile phones and interactive tables
Many approaches have been proposed to connect mobile phones with interactive tables. Most rely on having the phone placed on table all times, which may hinder the overall user exp...
Fadi Chehimi, Enrico Rukzio