Fig. 6: Key attributes and potential future applications of SWH.

The SWH approach combines four key attributes highlighted in the following potential future NLoS application scenarios: in each example, a scattering surface or medium is used to indirectly illuminate, and intercept light scattered by the hidden objects. a A small probing area allows to inspect defects in tightly confined spaces, e.g., in running aircraft engines. b A wide angular FoV allows to measure/detect hidden objects without previous knowledge of their position as, e.g., important when navigating in degraded visual environments. c High spatial resolution allows for the measurement of small structures, such as non-invasive imaging of brain vessels through the skull. d High temporal resolution allows to image objects in motion, e.g., to discern cardiac arrhythmia through the chest. The integration of these attributes in a single approach to NLoS imaging distinguishes SWH from the current state of the art.