Results 31 to 40 of about 793,072 (247)
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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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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Multi-Focus Image Fusion Using Focal Area Extraction in a Large Quantity of Microscopic Images
Sensors, 2021 The non-invasive examination of conjunctival goblet cells using a microscope is a novel procedure for the diagnosis of ocular surface diseases. However, it is difficult to generate an all-in-focus image due to the curvature of the eyes and the limited ...
Jiyoung Lee +7 more
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Prediction of Bridge Pier Scour Depth and Field Scour Depth Monitoring
E3S Web of Conferences, 2018 In practice, it is a major challenge in real-time simulation and prediction of bridge pier scour depth, especially using 3-D numerical model. The simulation time spend too much to use 3-D numerical model simulation and inefficiently to predict bridge ...
Lee Fong-Zuo +5 more
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Geometric and Optic Characterization of a Hemispherical Dome Port for Underwater Photogrammetry
Sensors, 2016 The popularity of automatic photogrammetric techniques has promoted many experiments in underwater scenarios leading to quite impressive visual results, even by non-experts. Despite these achievements, a deep understanding of camera and lens behaviors as
Fabio Menna +3 more
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SensorsIn general, it is difficult to visualize internal ocular structure and detect a lesion such as a cataract or glaucoma using the current ultrasound brightness-mode (B-mode) imaging.
Gil Su Kim +3 more
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Humaniora, 2013 The knowledge of photography becomes fundamental importance in the understanding of digital cinematography. The work of a good photography is a blend of knowledge and photographic ability (skill) correctly.
Ahmad Faisal Choiril Anam Fathoni +1 more
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Contrast transfer characteristics of the light sword optical element designed for presbyopia compensations [PDF]
Journal of the European Optical Society-Rapid Publications, 2011 The paper discusses the abilities of the light sword optical element (LSOE) for presbyopia compensation. The imaging properties are analyzed by means of the modulation transfer functions and output images of the star resolution test.
Petelczyc K. +6 more
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Effects of depth of field on eye movement
The Journal of Engineering, 2019 Depth of field is an important image feature, which can be used to enhance observers’ perception of stereopsis. To explore how the depth of field influenced observers’ attention in images, a within-subject experiment including two factors, two scenes and
Tingting Zhang +4 more
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Depth of Field: Discursive design research through film
FORMakademisk, 2010 This article is about the role of film in interaction and product design research with technology, and the use of film in exploring and explaining emerging technologies in multiple contexts.
Timo Arnall, Einar Sneve Martinussen
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