Detection and tracking of moving objects hidden from view

Genevieve Gariepy, Francesco Tonolini, Robert Henderson, Jonathan Leach, Daniele Faccio

Research output: Contribution to journalArticlepeer-review


The ability to detect motion and track a moving object hidden around a corner or behind a wall provides a crucial advantage when physically going around the obstacle is impossible or dangerous. Previous methods have demonstrated that it is possible to reconstruct the shape of an object hidden from view. However, these methods do not enable the tracking of movement in real time. We demonstrate a compact non-line-of-sight laser ranging technology that relies on the ability to send light around an obstacle using a scattering floor and then detect the return signal from a hidden object within only a few seconds of acquisition time. By detecting this signal with a single-photon avalanche diode (SPAD) camera, we follow the movement of an object located a metre away from the camera with centimetre precision. We discuss the possibility of applying this technology to a variety of real-life situations in the near future.
Original languageEnglish
Pages (from-to)23-26
Number of pages5
JournalNature Photonics
Early online date7 Dec 2015
Publication statusPublished - Jan 2016


  • imaging and sensing
  • optical sensors


Dive into the research topics of 'Detection and tracking of moving objects hidden from view'. Together they form a unique fingerprint.

Cite this