TABLE 3 
INSERTS COORDINATES IN METERS 
  
  
  
  
  
  
Inserts Coordinates Vz 
# X Y Z 
101 3.050 42.352 0.520 0.001 
103 6.074 42.351 0.521 0.001 
105 8.040 42.351 0.504 0.000 
107 10.065 42.372 0.530 0.002 
109 13.015 42.358 0.532 0.008 
1001 3.062 42.353 29.481 0.001 
1003 6.050 42.362 29.470 0.001 
1005 8.063 42.341 29.460 0.002 
1007 10.021 42.343 29.181 0.000 
1009 13.082 42.360 29.655 0.005 
3001 3.079 42.341 89.480 0.004 
3003 6.072 42.351 89.495 0.001 
3005 8.073 42.368 89.163 0.003 
3007 10.056 42.315 89.199 0.005 
3009 10.076 42.382 89.465 0.003 
  
  
  
  
ADVANTAGE OF THE DEVELOPED TECHNIQUE 
There are two main techniques which exist to 
perform this project. These two techniques 
are: 
- The photogrammetric technique wherein a 
camera is used for measurements and photo- 
grammetric models are used for data 
reduction. 
- The surveying technique wherein a theodo- 
lite is used for measurements and survey- 
ing models for data reduction. 
The developed technique is a combination of 
both techniques, where the measurements are 
taken according to the surveying technique and 
photogrammetric technique is used for data 
reduction. A comparison between the surveying 
technique, the photogrammetric technique and 
the developed technique are given next. 
Comparison between the Developed Technique 
and the Surveying technique 
The inserts co-ordinates obtained by using 
the developed technique and the surveying 
technique are functions of the theodolite 
directions and the estimated values of B, and 
By. The difference of the accuracy of the in- 
serts co-ordinates in the two techniques de- 
pend on the accuracy of the estimated values 
of B, and B,. The estimated values of B, and 
By according to the developed technique are 
better than those obtained by surveying tech- 
niques because of the following reasons. 
- The value of Bg in the developed technique 
is estimated from the relative orientation 
of the two theodolite images. The co-ordi- 
nates of one insert is needed for estima- 
ting B, and if the core has n inserts, 
then (n-1) extra observations exist for 
estimating B, value by using least square 
solution. 
- The value of B, in the surveying technique 
is measured rather than computed and the 
measured value of B, is of limited accuracy. 
- The value of By is commonly measured in 
surveying technique by using a substance 
bar. During measurements the substance 
bar axis has to satisfy two geometrical 
conditions which are: (1) The substance 
bar axis has to be horizontal (2) The 
middle point of the substance bar and the 
theodolite station have to be on a verti-