Inside the hologram: reconstructing the bulk observer’s experience
Journal of High Energy Physics, 2022 Abstract We develop a holographic framework for describing the experience of bulk observers in AdS/CFT, that allows us to compute the proper time and energy distribution measured along any bulk worldline. Our method is formulated directly in the CFT language and is universal: it does not require knowledge of the bulk geometry as an
Jafferis, Daniel L., Lamprou, Lampros
openaire +4 more sources
Robust Holographic Reconstruction by Deep Learning with One Frame
Photonics, 2023 A robust method is proposed to reconstruct images with only one hologram in digital holography by introducing a deep learning (DL) network. The U-net neural network is designed according to DL principles and trained by the image data set collected using ...
Xianfeng Xu +3 more
doaj +1 more source
Inline hologram reconstruction with sparsity constraints [PDF]
Optics Letters, 2009 Inline digital holograms are classically reconstructed using linear operators to model diffraction. It has long been recognized that such reconstruction operators do not invert the hologram formation operator. Classical linear reconstructions yield images with artifacts such as distortions near the field-of-view boundaries or twin images.
Denis, Loïc +4 more
openaire +4 more sources
Reduction in the reconstruction error of computer-generated holograms by photorefractive volume holography [PDF]
, 1993 We suggest a method for coding high-resolution computer-generated volume holograms. It involves splitting the computer-generated hologram into multiple holograms, their individual recording as volume holograms by use of the maximal resolution available ...
Barhen, Jacob +3 more
core +2 more sources
Evaluation of permissible pixel positioning errors for displaying computer-generated holograms in projection photolithography [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The authors carried out the estimation of the permissible positioning errors when displaying reflective phase holograms intended for application in holographic photolithography on solid media using electron-beam lithography devices.
Sergey N. Koreshev +2 more
doaj +1 more source
Holographic capture of femtosecond pulse propagation [PDF]
, 2006 We have implemented a holographic system to study the propagation of femtosecond laser pulses with high temporal (150 fs) and spatial resolutions (4 µm).
Akozbek N. +4 more
core +3 more sources
Achieving diffraction-limited resolution in soft-X-ray Fourier-transform holography [PDF]
, 2020 The spatial resolution of microscopic images acquired via X-ray Fourier-transform holography is limited by the source size of the reference wave and by the numerical aperture of the detector.
Eisebitt, Stefan +4 more
core +2 more sources
Robust particle outline extraction and its application to digital on-line holography [PDF]
, 2014 Peer ...
Burns, Nicholas M, Watson, John
core +1 more source
Monochrome Image Hologram (MIH)
مجلة بغداد للعلوم, 2008 A new computer-generated optical element called a monochrome image hologram (MIH) is described. A real nonnegative function to represent the transmittance of a synthesized hologram is used.
Baghdad Science Journal
doaj +1 more source
OBJECT STRUCTURE EFFECT ON OPTIMAL LEVELS OF HOLOGRAM BINA-RIZATION IN TERMS OF RECONSTRUCTED IMAGE QUALITY [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2018 Subject of Research. The paper presents research results on object structure effect, that is the type and size of its elements, on optimal level of computer generated Fresnel holograms binarization in terms of reconstructed image quality. Method.
S. N. Koreshev, S. O. Starovoitov
doaj +1 more source