Spatial enhancement of multispectral images on urban areas - Urban Remote Sensing: Monitoring, Synthesis and Modeling in the Urban Environment - page 142

(a) Pan image

(b) Expanded MS Image

(c) Gram-Schmidt (d) GLP-CA

(f) GMMSE

(e) GSA-CA

FIGURE 10.6 Detail of the IKONOS test area (512 × 512) processed by the selected Pan-sharpening algorithms same as
Fig. 10.4. Spatial enhancement all the algorithms is apparent. Only GLP-CA (d) suffers from a residual spatial misregistration
between the Pan and the expanded MS image, which causes some blur on contours. Concerning colors, only GS (c) shows
some mismatch with the expanded MS image on vegetated areas that appear again too bright and textured.