ToF: Non-line-of-sight (NLOS) imaging turns the corner to usability

FIGURE 1. Non-line-of-sight (NLOS) imaging relies on precisely measuring the time of flight of ultrashort light pulses from a laser source to a high-speed detector such as a single-photon avalanche detector (SPAD). The red solid line shows the path of an ultrashort pulse passing through a window to a matte “relay wall” that diffusely reflects light into a room, where it…