Computational
Optics

With transient imaging, objects beyond the direct line of sight can be reconstructed using the time-encoded spatial information in multiply scattered light. This ability to "see around corners" has potential applications in monitoring hazardous areas, searching for survivors after a disaster, and improving the spatial awareness of a surgical site in robotic surgery.

MIRIS uses ultrafast illumination and detection to collect and utilize light transport information. A laser is used to direct a pulse train towards one of the walls. The light bounces off of the wall and travels through the scene before heading back towards the detector. The returning photons are counted with a gated SPAD detector.

Images of the scene are reconstructed from the collected time-encoded information using a modified back projection algorithm.