s W. 
D e IS Sy 
S. SCANNER : 6. 
Image Ve 
scanning te, 
| lai 
th 
co 
th 
Tr 
to 
Com) s 
Data 75 
verification 
e e S 
High-capacity e 
image processor UNS 
CPU HOST | CPU HOST 
Image output 
RASTER PRINTER RASTER PRINTER 
Fig. 5 
Components of a photogrammetric image processing system using either a digital workstation (left) or an analytical 
plotter (right). ^ 
Geometric resolution : up to 10 x 10 um = 
Radiometric resolution : < 0.01 density value 
Dynamic range : 0.1 - 2.5 density values 
Possibility of scanning black-and-white and color photographs 
Noise : < 0.01 density value for usual aerial negatives 
Scanning time : less than 5-10 min. for a whole aerial photograph with 10 x 10 um 
Fig. 
Table 2 s 
we ; Con 
Requirements in a scanner for photogrammetric image correlation. dist 
546