Results 21 to 30 of about 1,579,823 (328)
A SCALABLE APPROACH FOR AUTOMATING SCAN-TO-BIM PROCESSES IN THE HERITAGE FIELD [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesIn recent years, the demand for flexible and sustainable strategies in digitization processes has represented a significant challenge for the heritage documentation research community.
M. Avena +4 more
doaj +1 more source
Passive Athermal Optical Design Method Considering Thermal-Induced Surface Deformation
Photonics, 2021 Temperature variation not only results in changes in refractive index, radius, thickness, and air space, but also leads to surface deformation due to the mismatch in thermal expansion coefficients between glass and mechanical materials. However, existing
Tao Liu +4 more
doaj +1 more source
Shape recognition using orientational and morphological scale‐spaces of curvatures
IET Computer Vision, 2015 In this study, a scale‐invariant representation for closed planar curves (silhouettes) is proposed. The orientations of all points within the Gaussian scale‐space of the curve are extracted.
Erdem Akagündüz
doaj +1 more source
Lateral inhibition: inherent recurrent processes in coherent optical propagation [PDF]
, 1994 Processes that are analogous to the neural process of recurrent lateral inhibition can be found in optical systems that consist of a shift-invariant system and a Fabry-Perot cavity.
Liang, Minhua
core +2 more sources
Optical Design of a 4× Zoom Lens with a Stable External Entrance Pupil and Internal Stop
Photonics, 2022 Zoom lens with stationary external entrance pupil and internal stop is a type of special optical system that can be used in cascaded optics to meet the requirements of long focal length or variable magnification. We proposed a 4× zoom lens to improve the
Rui Qu +4 more
doaj +1 more source
Applied Sciences, 2023 The off-axis three-mirror optical system is derived from the classical Cooke triplet or a derivative of the inverse-telephoto lens. By properly arranging an internal reimaging mechanism or altering the location of the optical stop, one can create ...
Marija Strojnik +3 more
doaj +1 more source
GREGOR ‐ optical design considerations
Astronomische Nachrichten, 2003 AbstractAfter many years of successful work the Gregory Coudé Telescope (GCT) is going to be replaced by GREGOR. This new 1.5 m telescope is the result of design considerations which to a wide extent are based on new technologies. Special aspects of the design are presented, including measures to compensate for optical aberrations caused by ...
Soltau, D. +6 more
openaire +2 more sources
Development of a strontium optical lattice clock for the SOC mission on the ISS [PDF]
, 2016 The ESA mission "Space Optical Clock" project aims at operating an optical lattice clock on the ISS in approximately 2023. The scientific goals of the mission are to perform tests of fundamental physics, to enable space-assisted relativistic geodesy and ...
+28 more
core +4 more sources
Transformation-designed optical elements
Optics Express, 2007 We describe transformation design of optical elements which, in addition to image transfer, perform useful operations. For one class of operations, including translation, rotation, mirroring and inversion, an image can be generated that is ideal in the sense of the perfect lens (combining both near- and far-field components in a flat, unit transfer ...
D, Schurig, J B, Pendry, D R, Smith
openaire +2 more sources
Optical and mechanical design of the extreme AO coronagraphic instrument MagAO-X
, 2018 Here we review the current optical mechanical design of MagAO-X. The project is post-PDR and has finished the design phase. The design presented here is the baseline to which all the optics and mechanics have been fabricated.
Close, Laird M. +11 more
core +1 more source