ORIENT is a modular program system consisting of 
individual computation modules, where the adjustment 
module (ADJUST) is the main one. It is based on the 
principle of projective transformation (collinearity 
condition) of single photographs into the reference 
system, where they are mutually (in a block) adjusted by 
means of the bundle method. This results in adjusted co- 
ordinates of projection centers, determined points and 
rotations parameters of the single photographs, with their 
corresponding mean errors. 
The projective transformation is given by the following 
equations (Figure 1): 
(p-po) - AR! (P - bj) (1) 
eventually 
(P-E) 77 RO-B) (2) 
whereby R isthe orthogonal rotation matrix 
À. - scale coefficient. 
z Pospo 
a3 
v 
  
  
  
Yo 
  
  
Xo X 
Figure 1 Coordinate system 
Photogrametric measurements of spatial shifts of 
observed targets,which were glued on he gate,were 
performed simultaneously with geodetic measurements in 
two sets. 
First set of measurements (15. - 17. Jan. 1995) were 
performed in the dry dock near onesided pressure of 
water,after removal the upper barrier.The water level 
elevation "above" the gate was lifted from 0,0 m to 23,0 m 
and the water level elevation "under" the gate was 
constantly 0,0 m ( table1). 
34 
  
Second set of measurements (18. Jan. 1995). The water 
level elevation "above" and "under" the lock gate was 
levelled on 8,0 m and the water level elevation "above" the 
gate was lifted from 8,0 m to 29,5 m (table). 
Geodetic measurements of spatial shifts of observed 
points were performed by line of sight method.The 
theodolites (THEO 010B) stations have been located on 
the left and right side of the lock ( the stations A,B, figure 
2) The 0,6 m long rulers with milimeter division were 
fastened on the observed points and observed vertical 
plane passed through stations of theodolites A,B (figure 
2). 
"lower barriers" 
"upper barrlers" 
Figure 2 Geodetic and photogrammetric coordinate 
system 
3 LAYOUT AND TARGETING OF CONTROL AND 
OBSERVED POINTS 
The control points (1 - 8,figure3) have been laid out in 
places, where the stability remained the same during the 
whole experiment. 
The observed points (L1 - L19,P1 - P19, Figure 4) have 
been positioned on the surface of the observed lock 
gate.Marking of the control as well as observed points has 
been secured by diagonal targets that have been glued to 
the required positions. 
The spatial coordinates of control points in the local 
coordinate system have been determined by geodetical 
means, applying the spatial intersection method from the 
given geodetical base line equal to the photogrammetric 
base.Two second theodolites THEO 010 Zeiss Jena and a 
subtense bar have been used for the geodetic 
measurements. 
The accuracy of the determined spatial position of control 
points is given by the mean coordinate error 1.0 mm « 
Myyz < 1.5 mm. 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996