Results 21 to 30 of about 125,304,932 (268)
Ranking-Based Salient Object Detection and Depth Prediction for Shallow Depth-of-Field
Sensors, 2021 Shallow depth-of-field (DoF), focusing on the region of interest by blurring out the rest of the image, is challenging in computer vision and computational photography.
Ke Xian +4 more
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Depth estimation and validation of plenoptic light field camera
, 2023 A light field (LF) camera can record both the spatial and directional information of light rays in a three-dimensional (3D) scene. This is different from traditional photography, which sums up all the light rays to record their intensity and discard the ...
Hossain, Md. Moinul +4 more
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Indian Journal of Ophthalmology, 2021 Purpose: To study the relationship between the amplitude of accommodation (AA) measured by the Royal Air Force (RAF) rule and near addition (NA) prescribed in presbyopic patients to assess how far practice is different from theoretical recommendations ...
Susmi Deepu +5 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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High resolution digital holographic synthetic aperture applied to deformation measurement and extended depth of field method [PDF]
, 2010 This paper discusses the potential of the synthetic-aperture method in digital holography to increase the resolution, to perform high accuracy deformation measurement, and to obtain a three-dimensional topology map.
Claus, Daniel
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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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Depth perception with gaze-contingent depth of field
, 2014 Blur in images can create the sensation of depth because it emulates an optical property of the eye; namely, the limited depth of field created by the eye's lens. When the human eye looks at an object, this object appears sharp on the retina, but objects
Miguel A. Nacenta +7 more
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