Keyphrases
- sparse codes
- object detection
- histograms of oriented gradients
- image classification
- sparse coding
- dictionary learning
- linear classifiers
- pedestrian detection
- human detection
- sparse representation
- multi class
- discriminative power
- computer vision
- object categories
- face detection
- image patches
- background subtraction
- object recognition
- color histogram
- visual words
- classification error
- image representation
- unsupervised learning
- local binary pattern
- pairwise
- feature extraction
- image segmentation