Features strategies concern the issue how to use and combine different features and they can be classified in the following categories:
1) Two features (52 papers)
Color- Edge (3 papers)
Color-Texture (23 papers)
Color-Stereo (26 papers)
2) Three features (7 papers)
Color-Gradient-Texture (3 papers)
Color-Texture-Motion (CTM) (3 papers)
Color-Texture-Semantics (SIM-MFR) (1 paper)
3) More than three features (6 papers)
More than three features (3 papers)
Bag-of-Features (3 papers)