Photography and photocoordinate measurement 
The normal angle metric terrestrial camera Photheo 19/1318 
Zeiss Jena with horizontal photograph was used for the 
photography. The distribution of control and detail points is 
shown in Fig. 2. 
  
Fig.2 Distribution of control and detail points - F1 
The comparator coordinates of control and detail points were 
measured on 3 or 4 photographs by the precise 
monocomparator Komess 3030 Zeiss Jena with an achieved 
accuracy: 
mx’=1,2 pm my’=1,1 pm 2) 
The x, y, z ground coordinates of control and detail points were 
determined by a spatial survey intersection from F1, F3, F5 
three stations (Fig. 1). 
The x, y, z photogrammetric spatial coordinates of detail points 
placed on the air side of the dam were determined by the 
spatial analytical intersection where the photograph parameters 
were computed by the SAS method. 
The x, z photogrammetric plane coordinates of detail points 
placed on the top side of the dam were determined by the 
analytical time base method where the photograph parameters 
were also computed by the SAS method too. 
Graphic presentation of displacements 
The displacements of the air side of the dam in dx resp. dz 
direction during the period 20 - 23 epochs are illustrated in 
Fig. 3 resp. Fig. 4. 
The displacements of the top side of the dam in dx resp. dz 
direction during the same period are illustrated in Fig. 5 resp. 
Fig. 6. 
66 
Fig.3 Air side of the Bukovec dom "90-94 
Displacements dx [mm] 
+Xg 
Displacements dx [mm] 
e 
S 
x 
S 
S 
= 
e 
© 
e 
© 
e 
313. 336 466 
Distances y [m +Y 
  
[-> 20.epoch -=- 21.epoch = 22.epoch = 23.epoch| 
  
Fig. 4 Air side of the Bukovec dam "90-94 
Displacements dz [mm] 
=. 701 7 
-80 
£ -90 
ui 
-100 
= 
5 -110 
s 
Æ -120 
= 313 336 362 466 
Distances y [m] .*Y 
  
ES 20.epoch -&- 21.epoch - 22.epoch — 23.epoch] 
  
Fig 5 Top side of the Bukovec dam "90-94 
60 
40 
20 
0 
-20 
-40 
—60 
Displacements dx [mm] 
= 
#5 
339 313 286 257 200 177 151 1 
Distances s Im] from A1 
-e- 20. ux 21. ——22. 235. 
+Y 
  
Fig. 6 Top side of the Bukovec dam "90-94 
0 
-100 
200 
-300 
-400 
-500 
Displacements dz [mm] 
  
The projec 
adjustment 
dzo differer 
The dxo, 
differences 
differences 
observed pt 
Table 3:0 
determined 
EE 
Projectic 
center 
F1 
F3 
F5 
  
  
  
32 
E 
NI 
  
X ; 
N 300 
  
  
il 
oY 
AN 
N 
"NC. 
WS WC 2b 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
367 339 313 286 257 225 200 177 151 125 97 68 0 
Distances s [m] from A1 +Yg 
  
= 20.epoch -a- 21. epoch = 22.epoch =+ 23.epoch| 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996 
  
Achieved : 
From the c 
photogram 
points for t 
m x1 = 1,2 
RMS m zl 
were over 
unfavourat 
and main! 
camera sta 
Under the 
elements 
coordinate 
rotations ( 
3.2 Deter 
coordinat 
The proble 
- increasin 
and to 8 fc 
- the el 
individual 
F5 by bun 
The Xo, y 
with grour 
The dxo, d