Remote-Sensing Image Tile-Level Annotation Based on Discriminative Features and Expressive Visual Word Descriptors

Table 3

The OA and Kappa comparison between using different methods.

Methods	OA	Kappa
Color features	0.819 9	0.752 0
Texture features	0.651 5	0.533 2
Spatial features	0.801 8	0.730 9
NOF + K-means	0.838 6	0.774 6
WOF + K-means	0.881 4	0.818 0
Our proposed method	0.909 5	0.829 3