Page 211 - MATLAB Recipes for Earth Sciences

206 8 Image Processing

naivasha_rgb = cat(3,I1,I2,I3);
Similar to the examples above, the 4200x4100x3 array can now be dis-
played using

imshow(naivasha_rgb);

MATLAB scales the images in order to fit the computer screen. Exporting
the processed image from the Figure Window would only save the image at
the monitor·s resolution. To obtain an image at a higher resolution (Fig. 8.4),
we use the command

Fig. 8.4 RGB composite of a TERRA-ASTER image using the spectral infrared bands vnir_
Band3n, 2 and 1. The result is displayed using imshow. Original image courtesy of NASA/
GSFC/METI/ERSDAC/JAROS and U.S./Japan ASTER Science Team.