title: Image quality improvement of parallel four-step phase-shifting digital holography by using the algorithm of parallel two-step phase-shifting digital holography.
abstract: We propose an algorithm that can improve the quality of the reconstructed image from the single hologram recorded by the optical system of the parallel four-step phase-shifting digital holography. The proposed algorithm applies the image-reconstruction algorithm of parallel two-step phase-shifting digital holography to the hologram so as to reduce errors in the reconstructed image and eliminate ghosts. We numerically and experimentally confirmed that the proposed algorithm decreased 25% in terms of root mean square error in amplitude, and eliminated the ghosts, respectively.
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kakue
authors.forename: Yuri
authors.initials: Y
authors.lastname: Moritani
authors.forename: Kenichi
authors.initials: K
authors.lastname: Ito
authors.forename: Yuki
authors.initials: Y
authors.lastname: Shimozato
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Awatsuji
authors.forename: Kenzo
authors.initials: K
authors.lastname: Nishio
authors.forename: Shogo
authors.initials: S
authors.lastname: Ura
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Kubota
authors.forename: Osamu
authors.initials: O
authors.lastname: Matoba