Yo GROUND VISIBLE 
A IN STEREO 
THE VARIATION OF GROUND- 
VISIBILITY IN A SINGLE POINT, 
WHEN THE ERSE VARIES. 
— 
n5 
Ao 
—— — — — — — — — 
  
3,0 
2%) 
VISIBEL 
GROUND 
RELATIVE SHADOW =~ LENGTH 
407 
AIS 0, END OVERLAP WIDE ANGLE 
p > CAMERA, 
% END OVERLAP. NORMAL ANGLE 
THE VARIATION OF THE VISIBILITY 
OF SUNLIT GROUND ALONG THE 
POINT-ROW A! — AIS. 
/o 
? 
>  SUNLIT GROUND MONOCULARY 
NS — AWD STEREOSCOP/CALLY 
VISIBLE 
N 
\ 
v 
N 
  
NC 
> SUNLIT GROUND VISIBLE 
x SIN STEREO 
+ 
T 
} > 
A/0 AIS TET 
  
  
© 
Jo A 
VISIBLE 
GROUND 
301+ 
  
THE VARIATION OF TOTAL 
GROUND VISIBILITY IN A 
SINGLE POINT, WHEN 
THE BASE VARIES. 
—— AM 
— 
— — 
nA 
AIO 
60 9o END OVERLAP. WIDE ANGLE 
> CAMERA 
%/o END OVERLAP. NORMAL ANGLE 
CAMERA 
THE VARIATION OF GROUND-VISIBILITY IN 
POINT A1, WHEN THE RELATIVE SHADOW-— 
LENGTH VARIES BETWEEN 4o-/£. 
TOTAL SUNLIT GROUND VISIBLE 
IN THE MODEL (MONOCULARY 
M. AND STEROSCOPICALLY) 
SUNLIT GROUND VISIBLE IN STEREO 
u^ 
+ > 
h 5 
RELATIVE 
SHRDOW - LENGTH