lin 
pi» 
and 
int 
spa 
Xo m phc 
Xp;YP - Photo coordinates of feature A c 
| Xp;Yo - Datum coordinates of feature bac 
\ 
x d- Displacement the 
cor 
Xo N exi 
ton 
  
Opa 
ive 
a ge 
of 
2 Orthophoto Production - the image of a feature is displaced 
to its datum position. 
The 
mat 
and 
aer 
The 
phc 
tic 
Coc 
the 
the 
lin 
Grc 
and 
  
In 
reg 
in 
knc 
ver 
inf 
pix 
In 
phc 
ptc 
ort 
tog 
phc 
Sys 
  
Y 
5 Digital Differential Rectification - a programmed geometric 
and photometric transformation. 
60