title: Superresolution of interference fringes in parallel four-step phase-shifting digital holography.
abstract: A superresolution method for interference fringes obtained by parallel four-step phase-shifting digital holography is proposed. A complex amplitude distribution of an object wave is derived from a recorded hologram by parallel phase-shifting interferometry using two pixels without any interpolation procedures. Multiple distributions are derived by changing one of the two pixels when conducting phase-shifting interferometry. The angular spectrum distribution of the object wave is obtained by both the Fourier transforms and synthesis of the spectrum distribution from the Fourier-transformed images in the spatial frequency domain. Available space bandwidth is extended to half of that of an image sensor.
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Tahara
authors.forename: Yonghee
authors.initials: Y
authors.lastname: Lee
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Ito
authors.forename: Peng
authors.initials: P
authors.lastname: Xia
authors.forename: Yuki
authors.initials: Y
authors.lastname: Shimozato
authors.forename: Yuki
authors.initials: Y
authors.lastname: Takahashi
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