Active range imaging via random gating

Grigorios Tsagkatakis; Arnaud Woiselle; George Tzagkarakis; Marc Bousquet; Jean-Luc Starck; Panagiotis Tsakalides

doi:10.1117/12.974606

19 November 2012 Active range imaging via random gating

Grigorios Tsagkatakis, Arnaud Woiselle, George Tzagkarakis, Marc Bousquet, Jean-Luc Starck, Panagiotis Tsakalides

Proceedings Volume 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI; 85420P (2012) https://doi.org/10.1117/12.974606
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

Abstract

Range Imaging (RI) has sparked an enthusiastic interest recently due to the numerous applications that can benefit from the presence 3D data. One of the most successful techniques for RI employs Time-of-Flight (ToF) cameras which emit and subsequently record laser pulses in order to estimate the distance between the camera and an object. A limitation of this class of RI is the requirement for a large number of frames that have to be captured in order to generate high resolution depth maps. In this work, we propose a novel approach for ToF based RI that utilizes the recently proposed framework of Compressed Sensing to dramatically reduce the number of necessary frames. Our technique employs a random gating function along with state-of-the-art minimization techniques in order to estimate the location of a returning laser pulse and infer the distance. To validate the theoretical motivation, software simulations were carried out. Our simulated results have shown that reconstruction of a depth map is possible from as low as 10% of the frames that traditional ToF cameras require with minimum reconstruction error while 20% sampling rates can achieve almost perfect reconstruction in low resolution regimes. Our experimental results have also shown that the proposed method is robust to various types of noise and applicable to realistic signal models.

Citation Download Citation

Grigorios Tsagkatakis, Arnaud Woiselle, George Tzagkarakis, Marc Bousquet, Jean-Luc Starck, and Panagiotis Tsakalides "Active range imaging via random gating", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85420P (19 November 2012); https://doi.org/10.1117/12.974606

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