Activity-based person identification using sparse coding and discriminative metric learning.
Jiwen LuJunlin HuXiuzhuang ZhouYuanyuan ShangPublished in: ACM Multimedia (2012)
Keyphrases
- metric learning
- sparse coding
- person re identification
- semi supervised
- unsupervised learning
- feature space
- dictionary learning
- generative model
- sparse representation
- natural images
- dimensionality reduction
- distance metric
- image classification
- pairwise
- linear combination
- semi supervised learning
- multi task
- learning tasks
- image representation
- distance function
- labeled data
- supervised learning
- feature extraction
- high dimensional
- visual words
- neural network
- mixture model
- prior knowledge
- bag of words
- active learning
- expectation maximization
- text classification
- low dimensional
- input image
- feature selection