DEMETER D G 
DEMETER D G is a Digitizing sub-system to transform existing drawing 
into coded digital data. 
The acquired data are coded by a menu, checked and displayed on the 
screen with their final graphic representation. Administrative or 
technical identifications can be attributed to a logic acquisition unit,. 
The toponomy and its characteristics (position selection, character type, 
etc ...) are acquired through the menu or the keyboard. 
The DEMETER DG sub-system is used to acquire data from the following types 
of drawings : 
* Topographic maps * Longitudinal and cross profiles 
* Network maps * Cadastral maps * Project drawings for three-dimension 
perspective views. 
DEMETER P H 
DEMETER P H is the photogrammetric acquisition sub-system with real time 
plotting of the acquired data on an automatic flatbed plotter or on a 
graphics display. It is adapted to analytical stereoplotters such as MATRA 
TRASTER or to analog stereoplotters equipped with encoders. 
The operator benefits from computer-aided "real time" data restitution as 
well as a large number of functions suitable for photogrammetric works : 
assistance for the orientation of photographics stereopairs, 
positioning of the printed media on the plotter, 
coding of the observed elements, 
acquisition control, 
instantaneous graphics restitution, 
dimensioning and positioning of writtings, 
creation of a digital acquisition file. 
XO o oR o Ro #* 
The following data can be acquired with this sub-system : 
* topographic data * height spots * longitudinal section 
* cross section * cadastral data * surveys of points to be computed 
in aerotriangulation program (independent models) 
* volumetric data for three-dimension urban perspective views. 
Data acquired and coded as per the coding catalog is directly compatible 
with the geographic data base. 
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