Results 21 to 30 of about 3,649,900 (278)
Trade-Off Asymmetric Profile for Extended-Depth-of-Focus Ocular Lens
Photonics, 2022 We explore the possibility of extending the depth of focus of an imaging lens with an asymmetric quartic phase-mask, while keeping the aberration within a relatively low level.
Lenny A. Romero +2 more
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Learning Wavefront Coding for Extended Depth of Field Imaging [PDF]
, 2020 Depth of field is an important factor of imaging systems that highly affects the quality of the acquired spatial information. Extended depth of field (EDoF) imaging is a challenging ill-posed problem and has been extensively addressed in the literature ...
Akpinar, Ugur +4 more
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Photonics, 2023 Increasing the depth of field (DOF) is a crucial issue for imaging through scattering media. In this paper, an improved genetic algorithm is used to modulate the wavefront of light through scattering media, by which high-quality refocusing and imaging ...
Tongyu Han +5 more
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Branch-depth: Generalizing tree-depth of graphs [PDF]
, 1964 We present a concept called the branch-depth of a connectivity function, that generalizes the tree-depth of graphs. Then we prove two theorems showing that this concept aligns closely with the notions of tree-depth and shrub-depth of graphs as follows ...
DeVos, Matt, Kwon, O-joung, Oum, Sang-il
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Extended Depth-of-Field of a Miniature Optical Endoscope Using Wavefront Coding
Applied Sciences, 2020 Endoscopic imaging is an indispensable tool for visual inspection of surfaces in hard-to-access places. The conventional optical endoscope only enables imaging the regions that lie close to the focal plane, and therefore improving the depth of field (DOF)
Lei Yang +6 more
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Reconstruction of small components using photogrammetry: a quantitative analysis of the depth of field influence using a miniature step gauge [PDF]
Metrology and Measurement Systems, 2021 In this work, authors investigated the effect of the Depth of Field (DoF) reduction, arising when the acquisition of small objects is carried out with a photogrammetry-based system using a Digital Single Lens Reflex (DSLR) camera and the structure from ...
Maria Grazia Guerra +3 more
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St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2020 In the paper, the influence of phase distribution over the objects’ space on resolution and depth of field of computer-generated holograms has been investigated.
Koreshev Sergey +3 more
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Micromachines, 2023 Since the effect of the facet braiding phenomenon, the display quality of reconstructed image degrades with increasing depth of field in tabletop three-dimensional light-field display.
Peiren Wang +6 more
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Subjective method of refractometry and depth of focus
Journal of Optometry, 2012 Purpose: To study the impact of the depth of focus on subjective refraction and distribution of myopic and hyperopic refractions. Methods: A total of 450 eyes of 305 subjects in the age range of 23–34 years were recruited for the study. A distribution of
Nikolai M. Sergienko +2 more
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Optical approach of a hypercatadioptric system depth of field [PDF]
, 2010 A catadioptric system is composed of a mirror and a perspective camera. Since the mirror is curved and the distance between the mirror and the camera is short, some parts of the panoramic image keep blurred.
Zenou, Emmanuel, Zhang, Siyuan
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