Results 11 to 20 of about 5,099,090 (216)
Optical Encryption Based on Computer Generated Holograms in Photopolymer. [PDF]
Polymers (Basel), 2021 An optical encryption method based on computer generated holograms printing of photopolymer is presented. Fraunhofer diffraction is performed based on the Gerchberg-Saxton algorithm, and a hologram of the Advanced Encryption Standard encrypted Quick ...
Wu T, Ma J, Wang C, Wang H, Cao L, Su P.
europepmc +2 more sources
Performance Estimation of Intensity Accumulation Display by Computer-Generated Holograms
Applied Sciences, 2021 The image generated by binary computer-generated holograms (CGHs) always suffers from serious speckle noise. Thanks to the fast frame rate of the binary spatial light modulator, the speckle can be significantly suppressed by intensity accumulation, i.e.,
Jung-Ping Liu +3 more
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QUALITY ASSESSMENT OF BINARY OBJECT IMAGES RECONSTRUCTED BY COMPUTER-GENERATED HOLOGRAMS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2020 Subject of Research.The paper considers the issues of objective quality assessment of computer-generated Fresnel holograms and reconstructed binary object images. Method.The work is performed by the method of projection holographic photolithography based
Sergey N. Koreshev +3 more
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Fast 3D Analytical Affine Transformation for Polygon-Based Computer-Generated Holograms
Applied Sciences, 2022 We present a fast 3D analytical affine transformation (F3DAAT) method to obtain polygon-based computer-generated holograms (CGHs). CGHs consisting of tens of thousands of triangles from 3D objects are obtained by this method.
Houxin Fan +6 more
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Optics, 2023 Photodissolution is a process that is well known for its ability to cause inclusion of silver into the matrix of a chalcogenide layer, changing its optical properties.
Arjun Karimbana Kandy +6 more
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Prospects of testing aspheric surfaces with computer-generated holograms [PDF]
, 2012 For testing aspheric surfaces, computer generated holograms are frequently used. Some methods of generating the holograms as well as a comparison of in-line and off-axis computer generated holograms will be discussed. Furthermore, examples tested will be
Tiziani, Hans J.
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Broadband Holography via Structured Black Silicon Nano-Antennas
Applied Sciences, 2019 Computer-generated holograms have wide applications in different fields of optics, ranging from imaging, data storage, to security.Herein, we report a new method for the fabrication of large-scale computer-generated holograms from an inexpensive material,
Mohammed Sait +2 more
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3D computer generated medical holograms using spatial light modulators
Journal of Electrical Systems and Information Technology, 2014 The aim of this work is to electronically generate the diffraction patterns of medical images and then trying to optically reconstruct the corresponding holographs to be displayed in space.
Ahmed Sheet +6 more
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Experimental Validation of a Far-Field Emission Model of Computer-Generated Waveguide Holograms [PDF]
, 2023 We present a novel semi-analytic model and its experimental validation to simulate the far-field emission pattern of computer-generated waveguide holograms.
Bente, Erwin A.J.M.; id_orcid +3 more
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Light: Advanced Manufacturing, 2022 This paper presents the results of 15 years of studies in the field of terahertz holography at the Novosibirsk free electron laser. They cover two areas: research on obtaining holographic images in the terahertz range and the use of diffractive optical ...
Yulia Choporova +2 more
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