iwan. In 2008,
Square meter
acing reached
is designed to
08 by a DMC
ipproximately
AR points of
ng boundaries
'or validation,
estimate the
RMSESs). The
ach 3-4 pixels.
)
Iding
n Case I,
n Case II
Figure 7. Registration result
(a)(c) Projected lines from LIDAR data before registration,
(b)(d) Projected lines from LIDAR data after registration
Unit: pixel RMSE-sample RMSE-line
Case I 3.946 2.671
Case II 3.701 3.21]
Table 1. Comparison results
4. CONCLUSIONS
This investigation proposed an edge-based scheme to register
the correspondence between a single aerial image and airborne
LIDAR data. The registered quality reached 3-4 pixels in the
image space because of several factors. These include PDSM
resolution, shadow areas, and occlusions. These factors may
cause certain redundant lines and interfere with the current
registration procedure. Future work will improve the
registration ability with local modification to reduce the
influence of these redundant lines.
5. ACKNOWLEDGMENT
This study was partially supported by the National Science
Council, Taiwan, under project number 99-2221-E-008-079-
MY3. The authors would like to thank the Department of Land
Administration, M.O.I., for the aerial imagery and LIDAR data.
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