Polarimetric synthetic aperture radar change detection for specific land cover types

Figures & data

Figure 1. Experimental data-set. (a) Pauli decomposition map, 9 April 2009. (b) Pauli decomposition map, 15 June 2010. Class T1 indicates the change from bare lands to urban areas, class T2 denotes the change from urban architecture to bare lands, and class T3 indicates the change from lawns to water.

Figure 2. The top images are the difference maps using d_p for three change types: (a) class T1, (b) class T2, and (c) class T3. The bottom images are the difference maps using d_R for three change types: (d) class T1, (e) class T2, and (f) class T3. Class T1 indicates the change from bare lands to urban areas, class T2 denotes the change from urban architecture to bare lands, and class T3 indicates the change from lawns to water.

Figure 3. The comparison of d₁ and d₂ for three change types: (a) class T1, (b) class T2, and (c) class T3. On the abscissa are the d₁ values, and the ordinate contains the d₂ values. (d) The average of d₁ and d₂ for all change types.

Figure 4. Color code for each binary mask.

Table 1. Accuracy of change detection.

Change class	Detection rate (%)	False alarm rate (%)	Kappa coefficient
T1	88.03	6.55	0.905
T2	87.11	6.27	0.901
T3	91.10	3.28	0.936
Total	91.20	8.04	0.911