221 search results - page 40 / 45 » Detecting Unusual Activity in Video |
PR
2008
13 years 7 months ago
2008
This paper presents a Hierarchical Context Hidden Markov Model (HC-HMM) for behavior understanding from video streams in a nursing center. The proposed HC-HMM infers elderly behav...
BCSHCI
2009
13 years 8 months ago
2009
This paper presents a system for interaction with a display via hand pointing, where a single CCD camera on top of the screen is directed towards the viewers. An attention mechani...
CVPR
2009
IEEE
15 years 2 months ago
2009
IEEE
Several spatiotemporal feature point detectors have been recently used in video analysis for action recognition. Feature points are detected using a number of measures, namely sali...
PAMI
2007
13 years 7 months ago
2007
—An open vision problem is to automatically track the articulations of people from a video sequence. This problem is difficult because one needs to determine both the number of p...
FGR
2011
IEEE
12 years 11 months ago
2011
IEEE
Abstract— We propose here to acquire high resolution sequences of a person’s face using a pan-tilt-zoom (PTZ) network camera. This capability should prove helpful in forensic a...