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MM
2005
ACM
188views Multimedia» more  MM 2005»
15 years 7 months ago
Detecting group activities using rigidity of formation
Most work in human activity recognition is limited to relatively simple behaviors like sitting down, standing up or other dramatic posture changes. Very little has been achieved i...
Saad M. Khan, Mubarak Shah
SMC
2010
IEEE
242views Control Systems» more  SMC 2010»
14 years 12 months ago
Analysis of shopping behavior based on surveillance system
—Closed Circuit Television systems in shopping malls could be used to monitor the shopping behavior of people. From the tracked path, features can be extracted such as the relati...
Mirela Popa, Léon J. M. Rothkrantz, Zhenke ...
CVPR
2011
IEEE
14 years 5 months ago
Probabilistic Gaze Estimation Without Active Personal Calibration
Existing eye gaze tracking systems typically require an explicit personal calibration process in order to estimate certain person-specific eye parameters. For natural human compu...
Jixu Chen, Qiang Ji
ICCV
2011
IEEE
14 years 1 months ago
Data-driven Crowd Analysis in Videos
In this work we present a new crowd analysis algorithm powered by behavior priors that are learned on a large database of crowd videos gathered from the Internet. The algorithm wo...
Mikel Rodriguez, Josef Sivic, Ivan Laptev, Jean-Yv...
CRIWG
2004
15 years 3 months ago
A Framework for Asynchronous Change Awareness in Collaboratively-Constructed Documents
Abstract. Change awareness is the ability of individuals to track the asynchronous changes made to a collaborative document or surface by other participants over time. We develop a...
James Tam, Saul Greenberg