Keyphrases
- human detection
- histograms of oriented gradients
- object detection
- surveillance system
- action recognition
- adaboost classifier
- human tracking
- pedestrian detection
- background subtraction
- image features
- histogram of oriented gradients
- partial occlusion
- hog features
- feature vectors
- video surveillance
- activity recognition
- machine learning
- detection algorithm
- feature set
- image registration
- viewpoint
- face recognition
- three dimensional