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CORR
2007
Springer
183views Education» more  CORR 2007»
13 years 9 months ago
A complete set of rotationally and translationally invariant features for images
We propose a new set of rotationally and translationally invariant features for image or pattern recognition and classification. The new features are cubic polynomials in the pix...
Risi Imre Kondor
ICCV
2009
IEEE
1042views Computer Vision» more  ICCV 2009»
15 years 2 months ago
Activity Recognition using the velocity histories of tracked keypoints
We present an activity recognition feature inspired by human psychophysical performance. This feature is based on the velocity history of tracked keypoints. We present a generat...
Ross Messing, Chris Pal, Henry Kautz
FGR
2006
IEEE
117views Biometrics» more  FGR 2006»
14 years 3 months ago
Gesture Spotting in Low-Quality Video with Features Based on Curvature Scale Space
Player’s gesture and action spotting in sports video is a key task in automatic analysis of the video material at a high level. In many sports views, the camera covers a large p...
Myung-Cheol Roh, William J. Christmas, Josef Kittl...
MM
2010
ACM
196views Multimedia» more  MM 2010»
13 years 9 months ago
Non-parametric anomaly detection exploiting space-time features
In this paper a real-time anomaly detection system for video streams is proposed. Spatio-temporal features are exploited to capture scene dynamic statistics together with appearan...
Lorenzo Seidenari, Marco Bertini
PUC
2010
122views more  PUC 2010»
13 years 7 months ago
What is happening now? Detection of activities of daily living from simple visual features
We propose and investigate a paradigm for activity recognition, distinguishing the ‘on-going activity’ recognition task (OGA) from that addressing ‘complete activities’ (C...
Bruno Lepri, Nadia Mana, Alessandro Cappelletti, F...