Recent developments in single-photon-avalanche-diode (SPAD) sensors have led to accessible imaging arrays that are sensitive to single photons and time scales in the sub-100 ps region. This temporal resolution is sufficient to freeze light in motion which in turn provides a range of applications. We will discuss our recent work in two different areas. The first is based on both the single photon sensitivity and temporal resolution of SPADs; imaging behind corners, ranging from sensing and tracking of movement to full 3D reconstruction of a hidden scene. This technology, once a lab-based curiosity, is gradually making its way into the real world. The second uses the combination of spatial and temporal resolution to achieve unprecedented imaging capability of objects that are deeply embedded inside a thick scattering material. Computational retrieval allows to image the shape of objects hidden inside the equivalent of 5 cm of scattering tissue with sub-mm resolution.
|Title||Advanced time-of-flight applications with SPADs: from seeing behind walls to seeing through scattering materials|
School of Physics and Astronomy, University of Glasgow
|Session||9. SPAD special session I|
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