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International Journal of Digital Earth Volume 6, 2013 - Issue sup2: Geospatial Information for Digital Earth
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Original Articles

A Low-Cost Mobile Mapping System (LCMMS) for field data acquisition: a potential use to validate aerial/satellite building damage assessment

Andrea AjmarITHACA, Torino, Italy
,
Simone BalboDITAG, Politecnico di Torino, Torino, Italy
,
Piero BoccardoDITAG, Politecnico di Torino, Torino, Italy
,
Fabio Giulio TonoloITHACA, Torino, ItalyCorrespondence[email protected]
,
Marco PirasDITAG, Politecnico di Torino, Torino, Italy
&
Jan PrincicDITAG, Politecnico di Torino, Torino, Italy
Pages 103-123 | Received 06 Apr 2011, Accepted 04 Nov 2011, Published online: 09 Dec 2011

Figures & data

Figure 1. LCMMS system: four webcams and Global Positioning System (GPS) antenna embedded in a beacon light with a magnetic support.
Figure 1. LCMMS system: four webcams and Global Positioning System (GPS) antenna embedded in a beacon light with a magnetic support.

Table 1. Technical features of the PC used in the field test.

Figure 2. GPS-PC time offset trend (GPS time as reference).
Figure 2. GPS-PC time offset trend (GPS time as reference).
Figure 3. Acquistion software graphical interfaces. (a) Sample grabber, (b) GPS Data Logger, (c) Acquisition windows.
Figure 3. Acquistion software graphical interfaces. (a) Sample grabber, (b) GPS Data Logger, (c) Acquisition windows.
Figure 4. Post-processing software interface.
Figure 4. Post-processing software interface.
Figure 5. LCMMS device installed on a WFP car in Port-au-Prince.
Figure 5. LCMMS device installed on a WFP car in Port-au-Prince.
Figure 6. LCMMS survey tracks in Port-au-Prince.
Figure 6. LCMMS survey tracks in Port-au-Prince.
Figure 7. Examples of LCMMS georeferenced frames acquired during the survey. (a) Collapsed building, (b) Restricted road, (c) Temporary shelter.
Figure 7. Examples of LCMMS georeferenced frames acquired during the survey. (a) Collapsed building, (b) Restricted road, (c) Temporary shelter.

Table 2. Acquisition survey in Haiti – Statistics.

Figure 8. Car survey ground track (red lines) and building damage assessment (based on high-resolution aerial imagery) considered for the validation test.
Figure 8. Car survey ground track (red lines) and building damage assessment (based on high-resolution aerial imagery) considered for the validation test.
Figure 9. Comparison of a building damage classification on the aerial orthoimage and on the LCMMS frames – Classification agreement example.
Figure 9. Comparison of a building damage classification on the aerial orthoimage and on the LCMMS frames – Classification agreement example.
Figure 10. Comparison of a building damage classification on the aerial orthoimage and on the LCMMS frames – Erroneous classification example.
Figure 10. Comparison of a building damage classification on the aerial orthoimage and on the LCMMS frames – Erroneous classification example.

Table 3. Low Cost Mobile Mapping System (LCMMS) vs. aerial assessments confusion matrix.

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