3D computational ghost imaging

Matthew P. Edgar; Baoqing Sun; Richard Bowman; Stephen S. Welsh; Miles J. Padgett

doi:10.1117/12.2032739

16 October 2013 3D computational ghost imaging

Matthew P. Edgar, Baoqing Sun, Richard Bowman, Stephen S. Welsh, Miles J. Padgett

Proceedings Volume 8899, Emerging Technologies in Security and Defence; and Quantum Security II; and Unmanned Sensor Systems X; 889902 (2013) https://doi.org/10.1117/12.2032739
Event: SPIE Security + Defence, 2013, Dresden, Germany

Abstract

Computational ghost imaging is a technique that enables lensless single-pixel detectors to produce images. By illuminating a scene with a series of patterns from a digital light projector (DLP) and measuring the reflected or transmitted intensity, it is possible to retrieve a two-dimensional (2D) image when using a suitable computer algorithm. An important feature of this approach is that although the light travels from the DLP and is measured by the detector, the images produced reveal that the detector behaves like a source of light and the DLP behaves like a camera. By placing multiple single-pixel detectors in different locations it is possible to obtain multiple ghost images with different shading profiles, which together can be used to accurately calculate the three-dimensional (3D) surface geometry through a photometric stereo techniques. In this work we show that using four photodiodes and a 850nm source of illumination, high quality 3D images of a large toy soldier can be retrieved. The use of simplified lensless detectors in 3D imaging allows different detector materials and architectures to be used whose sensitivity may extend beyond the visible spectrum, at wavelengths where existing camera based technology can become expensive or unsuitable.

Citation Download Citation

Matthew P. Edgar, Baoqing Sun, Richard Bowman, Stephen S. Welsh, and Miles J. Padgett "3D computational ghost imaging", Proc. SPIE 8899, Emerging Technologies in Security and Defence; and Quantum Security II; and Unmanned Sensor Systems X, 889902 (16 October 2013); https://doi.org/10.1117/12.2032739

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available