Results 41 to 50 of about 1,253,282 (331)

“Depth of field” or “negative forms”: space/syntax from HDR digital photography to hypermedia navigation

open access: yesSillages Critiques, 2016
The article explores the notions related to the perception of the figure/ground contrast in the visual arts. Starting from the history of the words “negative” and “depth of field” in 19th-century photography, it studies solutions such as the possible ...
Marie-Madeleine Martinet
doaj   +1 more source

A Depth-Enhanced Holographic Super Multi-View Display Based on Depth Segmentation

open access: yesMicromachines, 2023
A super multi-view (SMV) near-eye display (NED) effectively provides depth cues for three-dimensional (3D) display by projecting multiple viewpoint or parallax images onto the retina simultaneously.
Zi Wang   +4 more
doaj   +1 more source

Using Gaze-Contingent Depth of Field to Facilitate Depth Perception [PDF]

open access: yesi-Perception, 2014
The lens system of the human eye has a limited depth of field that creates blur patterns that depend on its focus and the relative distances of the observed objects.
M Mauderer   +3 more
doaj   +1 more source

Rational filter design for depth from defocus [PDF]

open access: yes, 2012
The paper describes a new, simple procedure to determine the rational filters that are used in the depth from defocus (DfD) procedure previously researched by Watanabe and Nayar [4].
Joseph Raj, Alex Noel   +3 more
core   +1 more source

Use of Miniature Step Gauges to Assess the Performance of 3D Optical Scanners and to Evaluate the Accuracy of a Novel Additive Manufacture Process

open access: yesSensors, 2020
In this work, we show how miniature step gauges featuring unidirectional and bidirectional lengths can be used to assess the performance of 3D optical scanners as well as the accuracy of novel Additive Manufacturing (AM) processes. A miniature step gauge
Maria Grazia Guerra   +3 more
doaj   +1 more source

Integral Imaging Display System Based on Human Visual Distance Perception Model

open access: yesSensors, 2023
In an integral imaging (II) display system, the self-adjustment ability of the human eye can result in blurry observations when viewing 3D targets outside the focal plane within a specific range.
Lijin Deng   +3 more
doaj   +1 more source

Extending the depth-of-field of imaging systems with a scattering diffuser

open access: yesScientific Reports, 2019
Large depth of field (DOF) is a longstanding goal in optical imaging field. In this paper we presented a simple but efficient method to extend the DOF of a diffraction-limited imaging system using a thin scattering diffuser. The DOF characteristic of the
Meihua Liao   +6 more
semanticscholar   +1 more source

Large Depth of Range Maxwellian-Viewing SMV Near-Eye Display Based on a Pancharatnam-Berry Optical Element

open access: yesIEEE Photonics Journal, 2022
In order to overcome the accommodation and convergence (A-C) conflict that commonly causes visual fatigue in AR display, we propose a Maxwellian-viewing-super-multi-view (MV-SMV) near-eye display system based on a Pancharatnam-Berry optical element (PBOE)
Lin Wang   +4 more
doaj   +1 more source

The role of monocularly visible regions in depth and surface perception

open access: yes, 2009
The mainstream of binocular vision research has long been focused on understanding how binocular disparity is used for depth perception. In recent years, researchers have begun to explore how monocular regions in binocularly viewed scenes contribute to ...
Harris, Julie   +3 more
core   +1 more source

Depth-Enhanced Holographic Super Multi-View Maxwellian Display Based on Variable Filter Aperture

open access: yesMicromachines, 2023
The super multi-view (SMV) near-eye display (NED) effectively provides depth cues for three-dimensional (3D) displays by projecting multiple viewpoint images or parallax images onto the retina simultaneously. Previous SMV NED suffers from a limited depth
Kefeng Tu   +4 more
doaj   +1 more source

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