Tu 
  
(a) (b) 
Figure 2. 1-look images of Mt. Fuji (Japan) by JERS-1/SAR. (a) an original image; (b) a filtered 
image by use of the present estimate as the thresholds. 
  
(a) (b) 
Figure 3. 3-look images of Mt. Fuji (Japan) by JERS-1/SAR. (a) an original image; (b) a filtered 
image by use of the present estimate as the thresholds. 
264 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996