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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