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WWW
2009
ACM
14 years 9 months ago
What's up CAPTCHA?: a CAPTCHA based on image orientation
We present a new CAPTCHA which is based on identifying an image's upright orientation. This task requires analysis of the often complex contents of an image, a task which hum...
Rich Gossweiler, Maryam Kamvar, Shumeet Baluja
SIGMOD
2008
ACM
150views Database» more  SIGMOD 2008»
14 years 9 months ago
Ranking queries on uncertain data: a probabilistic threshold approach
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...
Ming Hua, Jian Pei, Wenjie Zhang, Xuemin Lin
ICIAP
2005
ACM
14 years 9 months ago
Qualitative Real-Time Range Extraction for Preplanned Scene Partitioning Using Laser Beam Coding
This paper proposes a novel technique to extract range using a phase-only filter for a laser beam. The workspace is partitioned according to M meaningful preplanned range segments...
Didi Sazbon, Zeev Zalevsky, Ehud Rivlin
PERCOM
2008
ACM
14 years 8 months ago
Information Agents for Pervasive Sensor Networks
In this paper, we describe an information agent, that resides on a mobile computer or personal digital assistant (PDA), that can autonomously acquire sensor readings from pervasiv...
Alex Rogers, Mike Osborne, Sarvapali D. Ramchurn, ...
ACHI
2009
IEEE
14 years 3 months ago
A Structured Approach to Support 3D User Interface Development
— Given its current state of the art, Model-Based UI Development (MBDUI) is able to fulfill the major requirements of desktop and mobile applications, such as form-based user int...
Juan Manuel González-Calleros, Jean Vanderd...