Ww 
= (7 = 
DTMCOR, a program usin the Kern correlator's hardware, is 
available to allow the automatic measurement of regular grid 
DTM data, within user defined areas. 
For processing results, a contour interpolation program, CONTUR 
is available which uses grid or profile data as input, and may 
also include break line information. 
8. Software Libraries 
To aid the development of software by both Kern and the 
customers, a number of libraries of subroutines have been 
developed. 
The libraries which are available to customers are written in 
both PASCAL and FORTRAN. Both the source code of the library 
subroutines and the library object code are delivered. 
All libraries, and in fact all of the Kern software, are 
independent of restrictions with regards to connection of 
devices to the main processor, as the user may define his own 
addresses and vectors for any device to suit his particular 
hardware configuration. 
8.1 P2 Plate Processor Library 
The P2 Library allows the user to control the stages of the DSR 
analytical restitution instrument : 
- select movements of stages (upper stage only, both 
stages parallel etc.). 
- drive stages to a point by plate, model or ground 
coordinates. 
- obtain current position in plate, model or ground 
coordinates. 
- profile along a vector between user defined start and 
end points. 
- send image orientation parameters to the plate 
processor 
8.2 Utilities Library 
The utilities library, which is delivered with the P2 plate 
processor library, allows the user to read the orientation 
parameter files, and thus coordinates may be transformed 
between any systems, e.g. model to ground, and the DSR stages 
may be driven in any of these coordinate systems. 
8.3 Correlator Video Library 
The Video Library can be used when correlator equipment is 
mounted on the DSR analytical plotter i.e. cameras, analogue 
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