occurs in 
ectively, 
given by 
'M bands 
hange, we 
‘Orrespond 
d checked 
Ith data in 
ded better 
le mainly 
ntial area 
nge from 
ice values 
study site 
] area and 
ks in the 
und in the 
e distance 
; or bj in 
and 7 and 
extracted 
e regions 
also used 
:ction 3.1. 
hange. As 
e case 2), 
section is 
ape of tlie 
e present 
he change 
n because 
> relative 
dsat TM 
> idea that 
) different 
X(t2) and 
nt images 
| from the 
t the are 
value of | 
xmatically 
frequency 
ral bands 
JA(t1) ae 
in every 
and cover 
change are successfully detected by using the change 
detection algorithm described in this study. 
References 
Caselles, V and M.J. Lopetz Garcia, 1989. An alternative 
simple approach to estimate atmospheric correction in 
multitemporal studies, Int. J. Remote Sensing, 10, pp.1127- 
4. 
n Y, S. Ueno and T. Kusaka, 1988. Radiometric 
correction for atmospheric and topographic effects on 
Landsat MSS images, Int. J. Remote Sensing, 9, pp.729- 
  
Fig.1 Landsat TM image in the study area taken on 
Nov. 6, 1991 
Frequencies 
  
    
  
  
0.0 ;. 10.0 15.0 20.0 25.0 
Fig.3 Frequency distribution of the distance D 
387 
748. 
Kawata, Y, A. Ohtani, T. Kusaka and S. Ueno, 1990. 
Classification Accuracy for the MOS-1 MESSR data before 
and after the atmospheric correction, IEEE TGRS, 28, 
pp.755-760. 
Kusaka, T, T. Kakehi, M. Ohtsuka and Y. Kawata, 1994. 
Land cover change detection using relative atmospheric 
correction between multitemporal satellite data, In: Proc. of 
International Symp. on Noise and Clutter Rejection in 
Radars and Imaging Sensors, Kawasaki, Japan, pp.603- 
608. 
Frequencies (a) Histogram in band 2 
18000 p um 
    
12000 
6000 
0.0 0.8 10 15 2.0 
reflectance ratio r 
Frequencies (b) Histogram in band 3 
18000 
12000 
6000 
  
0.0 DS o 1.0 x, 20 
reflectance ratio r 
Frequencies (c) Histogram in band 7 
18000 
  
0.0 "m pan nr y 
reflectance ratio r 
Fig.2 The distribution of the spectral reflectance ratio 
r=A(1991)/A(1987) (a) Histogram in band 2, 
(b) Histogram in band 3, (c) Histogram in band 7 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996