This document summarizes research on using remote sensing techniques like photogrammetry and digital cameras to categorize and analyze surface deteriorations on structures. Key points:
- Visual inspections are subjective and limited by access. Remote sensing allows comprehensive inspections.
- A concrete block wall was constructed with cracks and biological crusts added. Photos were taken at varying distances and magnifications.
- Image analysis software classified deteriorations in photos. Regression analysis calculated relationships between deterioration area and distance/magnification.
- Calculations determine the field of view and image scale at different camera settings to allow calculating deterioration sizes from pixel counts.