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Title
Papers for the international symposium Commission VI
Author
Sitek, Zbigniew

Table 2
Time and costs involved In the orthophotomap of a 1:5000
Item
kS
Type of work
Time
/in days/
Cost
/in D.M./
1
Photoflight with planning and
acceptance /1:13000} f*15 cm;
0.3
130.-
2
size 23x23 cm, overlap 90%/
Determination of ground oontrol
/aerialtriangulation by indepen
dent model/
a/ horizontal position
1.5
400.-
b/ horizontal position and eleva
tion
2.5
800*-
3
Terrestrial determination of ver
tical control points
5.0
1500.-
4
Orthoprojection /1:10000; AX «
2 mm; wilhout orientation data/
a/ Profiling >
1.0
450.-
b/ Exposure run /two orthophotos/
on GZ-1 with interpolation
0.4
250.-
5
Orthoprcjection and recording of
dropped line or contour lines
/1:5000; AX=4 mm; without
orientation data/
a/ Profiling
1.2
650.-
b/ Exposure run /two orthophotos/
on GZ-1 with interpolation
0.4
280.-
6
Type seting and montage of border
and lettering
1.0
—a
0
.
1
7
Construction of contours from
A R
500.-
dropped lines
8
Stereoploting of contours .
4.0
1600.-
9
Scribing of contour sheet
4.0
500.-
10
Composite print
‘ 0.3
120.-
The above mentioned data are taken from the experience of several
years map production at 1i5000 scale in North Rhine-Westphalia.
Photomaps compiled by the conventional rectification and by
the orthoprojection are in this region a part of the base map
series* It is not intended there to replace the line map with
th^ photomap, particularly in- the densely built up areas.
The results shown in Table 2 are also confirmed by Voss [5J •
At the University of Mining and Metallurgy In Cracow similar
comparison took place, when the Polish Base Map at 1:2000 scale
was analysed /without contour lines/* For one map sheet /1,6
square kilometer/ of the region near Cracow the production time
using Zeiss -Jena Topocart and Orthophot was 24 hours and with
the stereoplotting technique 130 hours* The time - consuming
ratio in this case Is 1:6,2* The cost ratio is similar.
106