Keyphrases
- structural information
- feature vectors
- feature set
- structural features
- complex structures
- image features
- feature space
- specific features
- tree structures
- classification method
- worst case
- low level
- neural network
- clustering algorithm
- information retrieval
- database
- real time
- data sets
- optimal strategy
- extracted features
- salient features
- feature subset
- hierarchical structure
- false positives
- face detection
- case study
- feature extraction
- optimal solution