title: Real-time increase in depth of field of an uncooled thermal camera using several phase-mask technologies.
abstract: Imaging systems that combine a phase mask in the pupil and digital postprocessing may have better performance than conventional ones. We have built such a system to enhance the depth of field of an uncooled thermal camera. The phase masks are binary, their structures are optimized thanks to an image quality criterion, and they have been realized with three different technologies that give equivalent results. The deconvolution postprocessing is performed in real time with a graphics processing unit. A significant increase of the depth of field of a factor 3 has been obtained.
authors.affiliation: Thales Research & Technology, Palaiseau, France. frederic.diaz@thalesgroup.com
authors.forename: Frédéric
authors.initials: F
authors.lastname: Diaz
authors.forename: Mane-Si Laure
authors.initials: MS
authors.lastname: Lee
authors.forename: Xavier
authors.initials: X
authors.lastname: Rejeaunier
authors.forename: Gaelle
authors.initials: G
authors.lastname: Lehoucq
authors.forename: François
authors.initials: F
authors.lastname: Goudail
authors.forename: Brigitte
authors.initials: B
authors.lastname: Loiseaux
authors.forename: Shailendra
authors.initials: S
authors.lastname: Bansropun
authors.forename: Joel
authors.initials: J
authors.lastname: Rollin
authors.forename: Eric
authors.initials: E
authors.lastname: Debes
authors.forename: Philippe
authors.initials: P
authors.lastname: Mils