5. TECHNOLOGICAL 
SOFTWARE 
used for the 
following 
DPS "Delta" is 
solution of the 
technological tasks: 
* making and revising digital maps 
for all the scale series; 
* making plans for 
cadastre; 
* making architectural and mine- 
surveying plans on the basis of 
* ground phototheodolite 
photographs; 
* geodetic network  densification 
by analitical photogrammetric 
triangulation. 
terrain 
DPS technological software 
supports all the = principal 
procedures of stereoscopic 
processing which is used in 
analytical station 
"Stereoanagraph", such as: 
automatic orientation of model, 
collecting topographic data, 
semantic encoding of entity, etc. 
Technology of making digital maps 
by means of DPS is based -on 
stereoscopic sight of digital image 
of stereopair on display screen. À 
library of functions automatizing 
accomplishment of several 
processes, such as: restoring 
circles, arcs, parallel lines, 
orthogonizing outlines of 
buildings, smoothing any 
horizontals out, etc, has been 
developed for reduction of 
laboriousness of obtaining digital 
terrain model (DTM). 
242 
Densification is accomplished by 
the method of analytical 
photogrammetric triangulation in 
two modes: traditional, e.g. 
artificial marking of tie points and 
digital marking. The second mode 
is supposed to be more prospective 
as it allows to avoid some 
instrumental errors during marking. 
This method provides for making a 
project of works with determination 
of the tie points centres through all 
the block. The project is created 
by digitizer upon contact pictures. 
According to the project data 
management with DPS work and 
making file of tie points 
coordinates through all the block 
with posterior checking the results 
of measurements is accomplished. 
Program interface accomplishes 
the attachment of the data with 
different adjusting programmes 
being in user's disposal. 
Collecting programme allows to 
divide topographic data into 
layers; their content is fixed by 
user. This technology gives an 
opportunity for convenient 
manipulation with data. Also it is 
allows to represent any combination 
of subject layers in different 
colours with operator's wish. 
DTM creating is possible to realize 
in two versions of setting 
coordinate-systems: in a given 
cartographic projection for small- 
scale satellite surveying and in a 
local orthogonal coordinate- 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996 
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