No. 
££ m om 
Table h. Choice of band pairs for the classification of paddy 
Bands chosen 
Blue and green 
Red and green 
Red ànd blue 
Blue, green and red 
Al. 
60 
36 
38 
9T 
1 
39 
61 
66 
0 
Table 3. Choice of band pairs for the classification of fresh- 
ly planted paddy (Al.1) and sugarcane well grown (A2.3) 
% Accuracy of classification 
A2.3 
well grown (A1.2) and sugarcane well grown (A2.3) 
(Fig.11) 
No. Bands chosen % Accuracy of classification 
Al.2 A2.3 
i Blue and green 76 73 
2 Red and green T4 TO 
3 Red and blue 75 T3 
h Blue, green and red 93 95 
Remarks i) Use of three band data leads to a more accurate cla- 
ssification of the following pairs of categories 
mature paddy (Al1.3) and sugarcane well grown (A2.3); 
paddy well grown (A1.2) and sugarcane well grown(A2.3) 
ii) On the contrary, the three band data leads to a com- 
pletely erroneous classification of paddy freshly 
planted (Al.1) and sugarcane well grown (A2.3). How- 
ever, note that for the same categories, any combi- 
nation of two-band data yields more accurate classi- 
fication results. It is not clear why more "informa- 
tion" has led to less accurate classification. 
Table 5. Multicategory Classification 
No. Bands % Accuracy of classification 
chosen Al1.1 A31.2 A1.3 AJ1.h A2.l A2.2 AO2.3 A2.h A10 
I Green and 
blue(Fig.8) 85 0 50 90 0 13 0 85 
2 Green and 
red (Fig.9) 50 86 0 91 0 0 0 85 
3 Blue and 
red(Fig.10) 95 33 3.. 90 0 0 0 85 
hl Blue,green 
and red 87 35 3 9 0 50 0 85 
- 
— CP RS 
em 
fy as 
SUIS PAIE AAA A 
Xe a A su 
A 
MOOR 
Amm 
  
   
    
   
   
   
   
   
  
  
   
    
    
    
   
    
   
  
   
   
    
      
  
  
  
  
  
   
  
   
    
p 
+ 
*