Fig. 4. NLOS imaging by LIFT.

a–c Reconstructed images of three static hidden scenes: a letter N, a mannequin, and letters V and I at different depths, with letter I being partially occluded by V. The mannequin is reconstructed within a smaller volume than others for better visualization. The images from left to right are the reference photographs, 3D rendering of the reconstructed scenes, and images of the scene from the wall and top perspectives, respectively. The last column shows the reconstructed scene when the camera is defocused on the wall. d, e imaging over 1-meter scale (beyond the wall size) using 100 laser shots (total acquisition time of 1 s). The rendering dynamic range is compressed here to emphasize the object at a large distance. f Representative frames of NLOS imaging of a moving object at a 30 Hz video rate. The dashed arrows indicate the movement direction. The color map is ‘jet’ with a normalized scale.