Crowd Event Detection in Surveillance Video - An Approach based on Optical Flow High-frequency Feature Analysis.
Ana Paula G. S. de AlmeidaVitor de Azevedo FariaFlavio de Barros VidalPublished in: VISAPP (3) (2015)
Keyphrases
- high frequency
- surveillance videos
- event detection
- feature analysis
- optical flow
- high resolution
- video surveillance
- image sequences
- computer vision
- video analysis
- wavelet transform
- face recognition
- wavelet coefficients
- feature extraction
- subband
- activity recognition
- motion estimation
- moving objects
- knn
- multi view
- video sequences
- high quality