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Optimized random phase only holograms

WebMar 17, 2024 · The Gerchberg–Saxton (GS) iteration algorithm is widely used for phase-only computer-generated holograms. However, as the GS algorithm was originally developed for single-plane holographic reconstruction, its reconstruction capability for multiple planes is limited. The additive cross-talk between different image planes results in image-quality … WebJan 27, 2024 · Phase holograms [ 18, 19, 20] allow for higher DE value than their amplitude counterparts. This type of hologram is commonly synthesized by iterative methods such as the Gerchberg–Saxton algorithm [ 21 ]. Phase holograms are reconstructed using phase liquid crystal spatial light modulators [ 22 ].

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WebMay 1, 2024 · For the CGH optimized algorithm, an usual solution for generating holograms is the integral diffraction calculation of the target intensity and the random phase mask [8], [9], [10], [11], which is defined as the conventional method in this paper. WebNov 10, 2024 · The optimized random phase tiles can be generated for any distance between the hologram plane and the object using an iterative Fresnel algorithm. … the good wife kim seo hyung https://epicadventuretravelandtours.com

Optimized random phase tiles for non-iterative hologram generation

WebThis produces an optimized random phase (ORAP), which is used for fast generation of phase only holograms of arbitrary amplitude targets. This ORAP needs to be generated … WebFeb 18, 2024 · The GS method and non-optimized random phase results are compared by applying an equal number of TM (24 binary holograms). The Random results are illustrated by dot line because they are not ... WebIn order to optimize computer-generated holograms (CGHs) for three-dimensional objects, an extension of the well known Gerchberg-Saxton algorithm is used. Optical reconstructions using an electrically addressed twisted-nematic liquid crystal display are presented. For arbitrary CGHs, reconstructing 3D-objects, we will discuss the problems and ... theatre 6 by sarah hall

Phase-Only Holograms - New York University

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Optimized random phase only holograms

Optimized random phase only holograms

WebA DNN of (Ishii et al., 2024) converts a phase-only hologram computed using the random phase-free method in an optimized phase-only hologram. Two layers for computing the forward and inverse scaled diffraction … WebFeb 13, 2024 · The phases of the wavefront recorded at different times are calculated, only one image hologram is needed for the phase to be determined at a given time instant . Matoba et al. propose an optical voice recorder based on digital holography for recording and reproducing propagating sound waves in air [ 20 ].

Optimized random phase only holograms

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WebFeb 7, 2024 · The Gerchberg–Saxton (GS) algorithm is a widely employed algorithm for the calculation of a phase-only hologram (POH). However, the POH that can strictly satisfy the amplitude constraints on the object and the holographic plane may not exist or be obtained, resulting in speckle noise and reduction of the reconstruction quality. WebNov 8, 2024 · Optimized random phase tiles for non-iterative hologram generation In this work, we introduce a technique for fast, high-quality, non-iterative generation of phase …

WebAug 9, 2024 · The ORAP technique uses a pre-generated random phase to obtain large amounts of holograms without need for iterative algo- rithms. As we will show, this method has the advantage of introducing an interframe correlation when generating a … WebThe resulting Optimized Fresnel RAndom Phase (OFRAP) is then multiplied with the desired intensity target, and after performing a Fresnel transform and a phase extraction we obtain the corresponding phase only hologram.

WebJul 26, 2024 · In 1966, Lohmann and Brown devised detour phase method to encode the optical wavefronts into holograms by computer 19. In 1967, Lohmann and Paris applied the fast Fourier transform (FFT)... WebAug 9, 2024 · generate phase only holograms corresponding to a color scene using a technique known as optimized random phase (ORAP) [36] under a space division …

WebApr 20, 2024 · The enhanced-NA Fresnel hologram reconstructs a holographic image at a viewing angle larger than the diffraction angle of a hologram pixel. The image space is limited by the bandwidth of a digital hologram. In this study, we investigate the property of image formation in the extended image space beyond a diffraction zone. A numerical …

WebNov 10, 2024 · The optimized random phase tiles can be generated for any distance between the hologram plane and the object using an iterative Fresnel algorithm. Afterwards, this tile can be used to generate holograms from any number of objects without the need for further iterative algorithms. the good wife kitchenWebFeb 1, 2024 · This website requires cookies, and the limited processing of your personal data in order to function. By using the site you are agreeing to this as outlined in our privacy … theatre 63640WebIOPscience theatre 71