title: Digital holographic reconstruction of a local object field using an adjustable magnification.
abstract: In the research of digital holography, this paper presents a numerical method using an adjustable magnification for local object field reconstruction together with experiment verification. The method first designs a spherical wave according to the given magnification to illuminate the digital hologram, then through a Fourier transform of diffraction, it calculates the reconstructed image plane. Afterward, a filtering window is set in the image plane to extract the image of the local object field, and then the object field reached hologram plane is formed using diffraction's inverse operation. Finally, the object field is reconstructed through diffraction's angular spectrum theory.
authors.affiliation: Kunming University of Science and Technology, Kunming, 650093, China. jcli@vip.163.com
authors.forename: Jun-chang
authors.initials: JC
authors.lastname: Li
authors.forename: Zu-jie
authors.initials: ZJ
authors.lastname: Peng
authors.forename: Patrice
authors.initials: P
authors.lastname: Tankam
authors.forename: Qing-he
authors.initials: QH
authors.lastname: Song
authors.forename: Pascal
authors.initials: P
authors.lastname: Picart