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Figure 5 B8 Stereomat with Electronic Components
Production of a map, houever, consists not only of delineating
the shape of the terrain by contour lines or profiles, it also
calls for the presentation of the planimetrie detail. For this
purpose, the B8 Stereomat uas equipped with a device to produce
orthophotographs.
With the Stereomat system in the profiling mode, the tracing stand
is moved systematically over the entire stereoscopic model area in
narrouly spaced lines, propelled by the X and Y servo motors. Since
the space rod intersection follous continuously the model surface,
the entire model is thus scanned automatically as required for the
production of an orthophotograph.
A television image of the zone being scanned is produced on the screen
of a third cathode ray tube uhich prints the orthophotograph. The
amplitude of the current from one of the tuo scanner photocells