Physics

Geology

Key (lock)

Intensity (physics)

Optics

Epistemology

Philosophy

Property (philosophy)

Scattering

Measure (data warehouse)

Computer science

Atmospheric optics

Time of flight

Computer security

Environmental science

Remote sensing

Database

Optics Express

We propose a time-of-flight measurement algorithm for depth and intensity that is robust to fog. The key idea of the algorithm is to compensate for the scattering effects of fog by using multiple time-gating and assigning one time-gated exposure for scattering property estimation. Once the property is estimated, the depth and intensity can be reconstructed from the rest of the exposures via a physics-based model. Several experiments with artificial fog show that our method can measure depth and intensity irrespective of the traits of the fog. We also confirm the effectiveness of our method in real fog through an outdoor experiment.

Time-of-flight imaging in fog using multiple time-gated exposures