Unsupervised Learning of Human Action Categories Using Spatial-Temporal Words.
Juan Carlos NieblesHongcheng WangLi Fei-FeiPublished in: Int. J. Comput. Vis. (2008)
Keyphrases
- spatial temporal
- human actions
- unsupervised learning
- action recognition
- spatio temporal
- space time interest points
- video sequences
- human motion
- activity recognition
- space time
- supervised learning
- visual features
- semi supervised
- video database
- spatial and temporal
- n gram
- human activities
- keywords
- text classification
- computer vision
- temporal sequences
- video shots
- semi supervised learning
- expectation maximization
- temporal information
- image sequences
- feature selection
- object recognition
- pairwise
- text documents
- bag of words
- multi modal