Unsupervised Learning of Human Action Categories Using Spatial-Temporal Words.
Juan Carlos NieblesHongcheng WangLi Fei-FeiPublished in: BMVC (2006)
Keyphrases
- spatial temporal
- human actions
- unsupervised learning
- action recognition
- spatio temporal
- space time interest points
- human motion
- space time
- supervised learning
- activity recognition
- visual features
- human activities
- keywords
- n gram
- semi supervised
- bag of words
- video sequences
- video database
- video shots
- text documents
- spatial and temporal
- semi supervised learning
- text classification
- expectation maximization
- temporal information
- video frames
- search engine
- machine learning