processor and frame buffer. 
The Video Library allows the user to : 
- initialize all registers. 
- grab an image, store the digital values in the frame 
buffer or on disk and display the image on a monitor 
for one or both cameras. 
- manipulate lookup tables. 
- obtain the digital value associated with a defined 
pixel. 
- continuously receive and display images of one camera. 
- create graphic primitives, such as lines and points. 
8.4 GP1 Graphic Peripheral Library 
The GP1 Library allows the user to control the GP1 plotting 
table : 
- select on-line or off-line mode. 
- connect given points with straight lines or curves. 
- select line types, select, scale and rotate symbols 
and text. 
- draw full and partial circles and spirals. 
- define a table window and origin. 
- select pen speed, pen number and pen position (up or 
down). 
- obtain table coordinates of a point. 
- download user defined symbols. 
9. External Software 
Software has been written by DSR users which either use the 
Kern photogrammetric equipment directly or interface to outputs 
from KERN software. Some of these software packages are 
available to other DSR users e.g. 
CRISP, a close range photogrammetry package for the DSR from 
the University of Graz which includes 
- project management. 
- set up of metric and non-metric photography. 
- bundle adjustment. 
- programs for DTM collection, profiling, on-line 
compilation. 
BLUH, a bundle adjustment system from the University of 
Hannover, which directly uses the output from the Kern AETRI 
Aerial Triangulation System as input to the adjustment. BLUH 
includes 
- initial value computation. 
- error detection. 
- additional parameters. 
- analysis of results. 
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