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combination of a geographic information system with a photogrammetric plotter
by simple underlaying of the orthophoto with the image in the information sys
tem. Beside these newcomers, the classical analytical plotter with a device for
superimposition might still remain the principal mapping system for high pro
ductivity and for high-precision tasks.
Fig. 3
Typical frame for multi-templet matching with terrain approximation by finite ele
ments. The image section has been digitized for image matching and reproduced on a
laser printer (512x480 pixels). The regular grid shows the triangle surfaces of the finite
elements and is used as reference for the representation of the height parallaxes. The size
of the parallaxes is represented by the displaced lines; a displacement to the left indicate a
lower terrain and a displacement to the right a terrain elevation. One remarks the
important parallaxes measured on the house in the lower part of the image.
