title: Complex object wave direct extraction method in off-axis digital holography.
abstract: Off-axis digital holography generally uses a 2D-FFT based spatial filtering method to extract the complex object wave from an off-axis hologram. In this paper, we describe a novel single exposure complex object wave extraction method which can provide a faster solution than the FFT based spatial filtering approach while maintaining the reconstructed phase image quality. And also, we show that the proposed direct filtering scheme can provide more robust filtering capability to the off-axis spatial carrier frequency variation than the spatial filtering method.
authors.affiliation: Division of Mechanical System Engineering, Chonbuk National University, 567 Baekje-daero,Deokjin-gu, Jeonju 561-756, South Korea.
authors.forename: Daesuk
authors.initials: D
authors.lastname: Kim
authors.forename: Robert
authors.initials: R
authors.lastname: Magnusson
authors.forename: Moonseob
authors.initials: M
authors.lastname: Jin
authors.forename: Jaejong
authors.initials: J
authors.lastname: Lee
authors.forename: Won
authors.initials: W
authors.lastname: Chegal
mesh_terms: D000465:Algorithms; D005583:Fourier Analysis; D006696:Holography / Q000379:methods*; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D012815:Signal Processing, Computer-Assisted