Fig. 1.

(a) Photographs of the target object, a plastic toy figure about 50 mm tall. (b) Typical frame of data containing 96 photons in a 396×266 pixel detector. This translates to 9.1 × 10⁻⁴ photons/pixel. (c) Data frame with 1025 photons obtained by combining 10 consecutive frames from the previous data set. The sizes of the pixels recording photons have been enlarged to improve visibility. Pixels with two photons are shown in red.