Fig. 1. Flow chart of high-precision registration band selection algorithm

Fig. 2. RMSE value and CRLB value line chart of high-resolution map band matching with each band of hyperspectral image.(a) Band 1; (b) band 2; (c) band 3

Fig. 3. Registration fusion diagram for the river junction. (a) 7th band, CRLB_x is 2.23; (b) 68th band, CRLB_x is 14.78; (c) 88th band, CRLB_x is 38.72

Fig. 4. Registration results bar chart of the three methods for selecting bands. (a)RMSE values; (b) number of correct matching points; (c) percentage of correct matching points

Fig. 5. Line chart of RMSE and CRLB_x varying with the band

Fig. 6. Road junction fusion image. (a) 19th band,RMSE is 5.3, CRLB_x is 50; (b) 19th band,RMSE is 1.9, CRLB_x is 17