title: Accurate calculation of computer-generated holograms using angular-spectrum layer-oriented method.
abstract: Fast calculation and correct depth cue are crucial issues in the calculation of computer-generated hologram (CGH) for high quality three-dimensional (3-D) display. An angular-spectrum based algorithm for layer-oriented CGH is proposed. Angular spectra from each layer are synthesized as a layer-corresponded sub-hologram based on the fast Fourier transform without paraxial approximation. The proposed method can avoid the huge computational cost of the point-oriented method and yield accurate predictions of the whole diffracted field compared with other layer-oriented methods. CGHs of versatile formats of 3-D digital scenes, including computed tomography and 3-D digital models, are demonstrated with precise depth performance and advanced image quality.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Liangcai
authors.initials: L
authors.lastname: Cao
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Dezhao
authors.initials: D
authors.lastname: Kong
authors.forename: Guofan
authors.initials: G
authors.lastname: Jin