Tunnels are among the most complex infrastructures to monitor, especially during excavation when ground convergence and deformations can compromise stability. Traditional methods are often invasive, slow, or limited to point measurements.

Photomonitoring™ provides a non-contact, full-field solution for convergence monitoring. Using two high-resolution cameras and the proprietary IRIS software, the system acquires images at regular intervals, processes them in near real-time, and tracks deformations continuously throughout excavation.