. Istanbul 2004 
  
Center 
  
  
»n-centrality; 
| the square 
- 0.0015mm 
2 00. 
7. CONCLUSIONS AND FUTURE ISSUES TO BE 
TACKLED 
This paper showed a procedure for detecting the displacement 
of slopes with vision metrology using a single digital camera. 
Assuming that targets were placed on the head of lock bolts 
applied to a slope along a typical highway with standard 
interval 600mm, an appropriate camera configuration, where 2 
mm displacement could be detected in 30m length, was 
investigated. As a result, a total of 12 images or four images 
taken at each of three locations were shown to be clear the 
requirements in terms of measurement precision, sensitivity of 
displacement detection and reliability. 
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Fraser, CS. and Gruendig, N-:- The Analysis of 
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Kiamehr, R.; Multi object optimization of geodetic Network, 
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Koch, K.L.: Parameter Estimation and Hypothesis Testing in 
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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004