Results 21 to 30 of about 168,556,410 (270)
Depth perception with gaze-contingent depth of field [PDF]
, 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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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
doaj +1 more source
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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Terminology - clarifying the current confusion and presenting the correct terminology
Frontiers in Ophthalmology, 2023 Most readers will be familiar with terminology (from meetings and conferences) that we, the editors, would deem to be incorrect or confusing. In general, we all tend to accept the information conveyed to us without really questioning what the terms truly
Ejaz Ansari, Ejaz Ansari
doaj +1 more source
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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Two independent mechanisms for motion-in-depth perception : evidence from individual differences [PDF]
, 2010 Our forward-facing eyes allow us the advantage of binocular visual information: using the tiny differences between right and left eye views to learn about depth and location in three dimensions.
Harold T Nefs +11 more
core +2 more sources
Flexible Depth of Field Photography [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008 The range of scene depths that appear focused in an image is known as the depth of field (DOF). Conventional cameras are limited by a fundamental trade-off between depth of field and signal-to-noise ratio (SNR). For a dark scene, the aperture of the lens must be opened up to maintain SNR, which causes the DOF to reduce.
Sujit Kuthirummal +3 more
openaire +3 more sources
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
doaj +1 more source
Depth of Field Extension in Laser Speckle Contrast Imaging
IEEE Access, 2020 A new technique that can increase the depth of field (DOF) for in vivo tissue imaging is presented. Extended DOF for the imaging of strongly scattering media is realized through combining laser speckle contrast imaging (LSCI) with light field (LF ...
Xiaohui Ma +5 more
doaj +1 more source
Depth‐of‐Field of the Accommodating Eye [PDF]
Optometry and Vision Science, 2014 ABSTRACT Purpose To obtain experimental values of the depth‐of‐field (DOFi) of the human eye for different accommodative states. Methods First, the monochromatic ocular wavefront of seven eyes from young subjects ...
Bernal-Molina, Paula +3 more
openaire +3 more sources