David Lindell, Matthew O'Toole and Gordon Wetzstein Imaging objects outside a camera's direct line of sight enables new capabilities in autonomous vehicle navigation, remote sensing, medical imaging, and many other domains. Recent approaches to non-line-of-sight (NLOS) imaging demonstrate impressive results using time-resolved single-photon detectors with ultrafast pulsed lasers. However, the size and quality of scenes which can be captured and reconstructed is limited because conventional inversion methods are typically slow or make restrictive assumptions about the scene. We introduce efficient methods for NLOS imaging based on a confocal sampling scheme and experimentally validate our approach with NLOS imaging of room-sized scenes outdoors and imaging at interactive rates.
