JAPRS & SIS, Vol.34, Part 7, “Resource and Environmental Monitoring”, Hyderabad, India, 2002 
  
Figure 7. Detail of the TIR image of figure 6, which shows the 
seepage clearly (light colour) (Fraikin et al., 1995) 
  
Figure 8. Digital geometric corrected video-mosaic of the dike 
at Nieuwaal, Bommelerwaard (Fraikin et al., 1995) 
  
Figure 9. Combination cf TIR image (Figure 7) and video 
image (Figure 8) (Fraikin et al., 1995) 
5. CONCLUSION 
This paper argues that thermal infrared method can be a useful 
method for detecting seepage. It is anticipated that using other 
remote sensing methods can assess other failure mechanisms in 
dikes as well. The output of the remote sensing is a continuous 
view of the measurement. This is one of its advantages, 
especially for linear structures (e.g. dikes) and large areas for 
382 
which the amount of data is very much. Fortunately, by having 
high speed, capacity computers, detection of critical points 
during crisis situations is done faster and easier. 
The integration of airborne normal images and TIR images can 
be a useful technique for interpretation an assessment seepage 
although the TIR images can be used separately. The TIR 
images for detection seepage can be used not only for normal 
loading (safety testing) but also during flood and after flood 
(maintenance and management monitoring). 
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