See around the corner using active imaging

Ove Steinvall; Magnus Elmqvist; Håkan Larsson

doi:10.1117/12.893605

5 October 2011 See around the corner using active imaging

Ove Steinvall, Magnus Elmqvist, Håkan Larsson

Proceedings Volume 8186, Electro-Optical Remote Sensing, Photonic Technologies, and Applications V; 818605 (2011) https://doi.org/10.1117/12.893605
Event: SPIE Security + Defence, 2011, Prague, Czech Republic

Abstract

This paper investigates the prospects of "seeing around the corner" using active imaging. A monostatic active imaging system offers interesting capabilities in the presence of glossy reflecting objects. Examples of such surfaces are windows in buildings and cars, calm water, signs and vehicle surfaces. During daylight it might well be possible to use mirrorlike reflection by the naked eye or a CCD camera for non-line of sight imaging. However the advantage with active imaging is that one controls the illumination. This will not only allow for low light and night utilization but also for use in cases where the sun or other interfering lights limit the non-line of sight imaging possibility. The range resolution obtained by time gating will reduce disturbing direct reflections and allow simultaneous view in several directions using range discrimination. Measurements and theoretical considerations in this report support the idea of using laser to "see around the corner". Examples of images and reflectivity measurements will be presented together with examples of potential system applications.

Citation Download Citation

Ove Steinvall, Magnus Elmqvist, and Håkan Larsson "See around the corner using active imaging", Proc. SPIE 8186, Electro-Optical Remote Sensing, Photonic Technologies, and Applications V, 818605 (5 October 2011); https://doi.org/10.1117/12.893605

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