Search results for "3D display"
showing 4 items of 4 documents
Stereopsis assessment at multiple distances with an iPad application
2017
[EN] We present a new application for iPad for screening stereopsis at multiple distances that allows testing up to ten levels of stereoacuity at each distance. Our approach is based on a random dot stereogram viewable with anaglyph spectacles. Sixty-five subjects with no ocular diseases, wearing their habitual correction were measured at 3 m and 0.5 m. Results were compared with a standard stereoscopic test (TNO). We found not statistically significant differences between both tests, but our method achieved higher reproducibility. Applications in visual screening programs and to design and use of 3D displays, are suggested. (C) 2017 Elsevier B.V. All rights reserved.
Breakthroughs in Photonics 2014: Recent Advances in 3-D Integral Imaging Sensing and Display
2015
Integral imaging concept provides a fascinating tool for the capture and display of 3-D images or movies with full parallax, with no need for special glasses and without visual fatigue due to the convergence and accommodation conflict. The limitations and recent advances in integral imaging are discussed.
Capture and visualization of biological 3D samples through lightfield imaging and display techniques
2022
La microscopía óptica convencional proporciona imágenes de alta resolución de muestras microscópicas. Sin embargo, su escasa profundidad de campo y su falta de seccionado óptico hacen que sea inadecuada para la observación de especímenes tridimensionales. Para solucionar este problema, se han propuesto varias técnicas de microscopía 3D, la mayoría de ellas basadas en procedimientos de escaneo. La microscopía lightfield, en cambio, es una técnica de reciente desarrollo, que es capaz de capturar información 3D de muestras gruesas en una sola toma. Esto se consigue registrando de forma simultánea la información espacial y angular de los rayos procedentes de cada punto del objeto. Esta caracter…
New Method of Microimages Generation for 3D Display
2018
In this paper, we propose a new method for the generation of microimages, which processes real 3D scenes captured with any method that permits the extraction of its depth information. The depth map of the scene, together with its color information, is used to create a point cloud. A set of elemental images of this point cloud is captured synthetically and from it the microimages are computed. The main feature of this method is that the reference plane of displayed images can be set at will, while the empty pixels are avoided. Another advantage of the method is that the center point of displayed images and also their scale and field of view can be set. To show the final results, a 3D InI dis…