Results 41 to 50 of about 2,006,423 (241)

Computer-generated holograms of three-dimensional objects synthesized from their multiple angular viewpoints [PDF]

Journal of the Optical Society of America A, 2003
Synthesizing computer-generated holograms (CGHs) of a general three-dimensional (3D) object is usually a heavy computational task. We propose and demonstrate a new algorithm for computing CGHs of 3D objects. In our scheme, many different angular projections of computer-designed 3D objects are numerically processed to yield a single two-dimensional ...
David, Abookasis, Joseph, Rosen
openaire   +2 more sources

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Normalized ghost imaging [PDF]

, 2012
We present an experimental comparison between different iterative ghost imaging algorithms. Our experimental setup utilizes a spatial light modulator for generating known random light fields to illuminate a partially-transmissive object.
Baoqing Sun, Bennink, Bromberg, Donoho, Duarte, Ferri, Ferri, Gatti, Gatti, Jeffrey H. Shapiro, Katz, Matthew P. Edgar, Miles J. Padgett, Shapiro, Stephen S. Welsh, Valencia   +15 more
core   +3 more sources

Image Processing of Automatic Hologram Synthesizer for Medical Use.

Journal of Light & Visual Environment, 1993
An image processing system for providing original images for synthesizing multiplex holograms is developed. This system reconstructs 3D (three dimensional) surface rendering images, two surfaces rendering images and/or band selected Computed Tomography values’ projection images of internal organs and/or bones of a patient from a series of tomograms ...
Tomohiko HATTORI, Sadayuki SAKUMA, Mitsuru IKEDA, Riyahi-Alam NADER   +3 more
openaire   +2 more sources

CORRECTION OF PROJECTIVE DEFORMATIONS OF 3D OBJECT, ON THE STAGE OF HOLOGRAM FORMATION

, 2020
The problems of digital synthesis of holograms associated with a discrete representation of a signal forming a holographic image are analyzed. One of the significant limitations is the technological problems of the formation of holographic structures ...
S. Shoydin, A. Pazoev
semanticscholar   +1 more source

Multilayer Soft Photonic Arrays Inspired by Cephalopod Skin for High‐Density, Independent, and Multimodal Actuation

Advanced Functional Materials, EarlyView.
A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim, Imbo Kong, Do Yoon Kim, Jaeyoung Choi, Seong‐Yu Choi, Yun Hyeok Lee, Sihwan Lee, Byung Ik Park, Gimin Sung, In‐Suk Choi, Wook Sung Kim, Jeong‐Yun Sun   +11 more
wiley   +1 more source

Performance enhancement of integral imaging based Fresnel hologram capturing by the intermediate view reconstruction.

Optics Express, 2019
A method aiming at improving the performance of integral imaging (II) based Fresnel hologram is proposed, which is generated by using the intermediate view reconstruction (IVR).
Lingyu Ai, Hongkun Cao, Haibo Sun, Xiao Shi   +3 more
semanticscholar   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

Representation and matching of knowledge to design digital systems [PDF]

, 1988
A knowledge-based expert system is described that provides an approach to solve a problem requiring an expert with considerable domain expertise and facts about available digital hardware building blocks.
Jones, J. U., Shiva, S. G.
core   +1 more source

Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films

Advanced Functional Materials, EarlyView.
Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley   +1 more source