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Vectorization
PHOTOMOD 6.0.2
5. Choose Vectors › Create stereo quality map. The Select stereopair window
opens.
Fig. 9. Parametric method of stereopair selection
Stereopair table displays a list of all stereopairs found in marker position. The system
selects automatically an optimal stereopair – block stereopair with the best stereoscopic effect. This stereopair is assigned the highest rating.
For each stereopair in the table the following parameters values are shown:
• Score, % – a score of stereo quality for block stereopairs;
• Intersection angle, degrees - an angle between photographing beams at the
current terrain point (in marker position);
• Distance to the boundary, pix. - the shortest distance from the current marker
position to the stereopair boundary;
• Heading, degree. - rotation angle of airframe in horizontal plane measured from
the north direction (countdown of positive angles counter-clockwise when viewed
from above);
• Roll, degree. - rotation angle (roll angle) of aircraft in relation to roll axis;
• Pitch, degree. - rotation angle of aircraft to main transverse axis of inertia or
angle between aircraft roll axis and horizontal plane;
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