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Proceedings Paper

Chromatic add-on to improve depth from defocus with a conventional camera
Author(s): P. Trouvé-Peloux; J. Sabater; F. Champagnat; G. Le Besnerais; T. Avignon
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Paper Abstract

We propose to add an optical component in front of a conventional camera to improve depth estimation performance of Depth from Defocus (DFD), an approach based on the relation between defocus blur and depth. The add-on is an afocal doublet, which adds chromatic aberration to the global system. This overcomes ambiguity and dead zone, which are the fundamental limitations of DFD with a conventional camera since the blur become unambiguous and measurable for each depth. In this paper we present the principle of the add-on, a theoretical performance model and experiments on real prototype to illustrate the improvement of depth estimation performance with the proposed add-on.

Paper Details

Date Published: 24 May 2018
PDF: 12 pages
Proc. SPIE 10677, Unconventional Optical Imaging, 1067709 (24 May 2018); doi: 10.1117/12.2309477
Show Author Affiliations
P. Trouvé-Peloux, DTIS, ONERA, Univ. Paris Saclay (France)
J. Sabater, Institut d'Optique Graduate School (France)
F. Champagnat, DTIS, ONERA, Univ. Paris Saclay (France)
G. Le Besnerais, DTIS, ONERA, Univ. Paris Saclay (France)
T. Avignon, Institut d'Optique Graduate School (France)


Published in SPIE Proceedings Vol. 10677:
Unconventional Optical Imaging
Corinne Fournier; Marc P. Georges; Gabriel Popescu, Editor(s)

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