منابع مشابه
Fast, large-scale hologram calculation in wavelet domain
We propose a large-scale hologram calculation using WAvelet ShrinkAgeBased superpositIon (WASABI), a wavelet transform-based algorithm. An image-type hologram calculated using the WASABI method is printed on a glass substrate with the resolution of 65, 536×65, 536 pixels and a pixel pitch of 1μm. The hologram calculation time amounts to approximately 354 s on a commercial CPU, which is approxim...
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We introduce a new algorithm for calculating computer generated hologram (CGH) using ray-sampling (RS) plane. RS plane is set at near the object and the light-rays emitted by the object are sampled at the plane. Then the light-rays are transformed into the wavefront with using the Fourier transforms. The wavefront on the CGH plane is calculated by wavefront propagation simulation from RS plane ...
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In X-ray crystallography the structure factor F(hkl) of any X-ray reflection (diffracted beam) hkl is the quantity that expresses both the amplitude and the phase of that reflection. It plays a central role in the solution and refinement of crystal structures because it represents the quantity related to the intensity of the reflection which depends on the structure giving rise to that reflecti...
متن کاملNonvolatile Hologram Storage in BaTiO 3
A key obstacle to the development of high-capacity three-dimensional information mass storage systems using photorefractive crystals is that readout of holograms stored in the conventional manner is destructive. Thus hologram fixing in these materials is important if practical systems are to be built. High-temperature (801200C) photorefractive grating writing results for a variety of pure and d...
متن کاملAdding Tactile Reaction to Hologram
In this paper, a hologram with tactile reactions is presented. The developed system consists of three components; a holographic display, a hand tracker, and a tactile display. The tactile display, which is our original device, produces force on user’s bare hand without any contact by using radiation pressure of airborne ultrasound. It adds the sense of touch to optical images floating in mid-ai...
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ژورنال
عنوان ژورنال: The Journal of The Institute of Image Information and Television Engineers
سال: 2018
ISSN: 1342-6907,1881-6908
DOI: 10.3169/itej.72.40