title: Partition calculation for zero-order and conjugate image removal in digital in-line holography.
abstract: Conventional digital in-line holography requires at least two phase-shifting holograms to reconstruct an original object without zero-order and conjugate image noise. We present a novel approach in which only one in-line hologram and two intensity values (namely the object wave intensity and the reference wave intensity) are required. First, by subtracting the two intensity values the zero-order diffraction can be completely eliminated. Then, an algorithm, called partition calculation, is proposed to numerically remove the conjugate image. A preliminary experimental result is given to confirm the proposed method. The method can simplify the procedure of phase-shifting digital holography and improve the practical feasibility for digital in-line holography.
authors.affiliation: Institute of Information Optics, Zhejiang Normal University, Jin Hua, China.
authors.forename: Lihong
authors.initials: L
authors.lastname: Ma
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Hongzhen
authors.initials: H
authors.lastname: Jin
mesh_terms: D000465:Algorithms; D005583:Fourier Analysis; D006696:Holography / Q000295:instrumentation* / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008962:Models, Theoretical