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Dissertations / Theses on the topic 'Depth of field'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

Ramirez, Hernandez Pavel. "Extended depth of field." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9941.

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In this thesis the extension of the depth of field of optical systems is investigated. The problem of achieving extended depth of field (EDF) while preserving the transverse resolution is also addressed. A new expression for the transport of intensity equation in the prolate spheroidal coordinates system is derived, with the aim of investigating the phase retrieval problem with applications to EDF. A framework for the optimisation of optical systems with EDF is also introduced, where the main motivation is to find an appropriate scenario that will allow a convex optimisation solution leading t

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2

Villarruel, Christina R. "Computer graphics and human depth perception with gaze-contingent depth of field /." Connect to online version, 2006. http://ada.mtholyoke.edu/setr/websrc/pdfs/www/2006/175.pdf.

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3

Aldrovandi, Lorenzo. "Depth estimation algorithm for light field data." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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4

Botcherby, Edward J. "Aberration free extended depth of field microscopy." Thesis, University of Oxford, 2007. http://ora.ox.ac.uk/objects/uuid:7ad8bc83-6740-459f-8c48-76b048c89978.

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In recent years, the confocal and two photon microscopes have become ubiquitous tools in life science laboratories. The reason for this is that both these systems can acquire three dimensional image data from biological specimens. Specifically, this is done by acquiring a series of two-dimensional images from a set of equally spaced planes within the specimen. The resulting image stack can be manipulated and displayed on a computer to reveal a wealth of information. These systems can also be used in time lapse studies to monitor the dynamical behaviour of specimens by recording a number of ima

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Möckelind, Christoffer. "Improving deep monocular depth predictions using dense narrow field of view depth images." Thesis, KTH, Robotik, perception och lärande, RPL, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235660.

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In this work we study a depth prediction problem where we provide a narrow field of view depth image and a wide field of view RGB image to a deep network tasked with predicting the depth for the entire RGB image. We show that by providing a narrow field of view depth image, we improve results for the area outside the provided depth compared to an earlier approach only utilizing a single RGB image for depth prediction. We also show that larger depth maps provide a greater advantage than smaller ones and that the accuracy of the model decreases with the distance from the provided depth. Further,

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6

Ozkalayci, Burak Oguz. "Multi-view Video Coding Via Dense Depth Field." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607517/index.pdf.

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Emerging 3-D applications and 3-D display technologies raise some transmission problems of the next-generation multimedia data. Multi-view Video Coding (MVC) is one of the challenging topics in this area, that is on its road for standardization via ISO MPEG. In this thesis, a 3-D geometry-based MVC approach is proposed and analyzed in terms of its compression performance. For this purpose, the overall study is partitioned into three preceding parts. The first step is dense depth estimation of a view from a fully calibrated multi-view set. The calibration information and smoothness assumptions

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7

Lindeberg, Tim. "Concealing rendering simplifications using gazecontingent depth of field." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189601.

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One way of increasing 3D rendering performance is the use of foveated rendering. In this thesis a novel foveated rendering technique called gaze contingent depth of field tessellation (GC DOF tessellation) is proposed. Tessellation is the process of subdividing geometry to increase detail. The technique works by applying tessellation to all objects within the focal plane, gradually decreasing tessellation levels as applied blur increases. As the user moves their gaze the focal plane shifts and objects go from blurry to sharp at the same time as the fidelity of the object increases. This can he

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8

Rangappa, Shreedhar. "Absolute depth using low-cost light field cameras." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/36224.

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Digital cameras are increasingly used for measurement tasks within engineering scenarios, often being part of metrology platforms. Existing cameras are well equipped to provide 2D information about the fields of view (FOV) they observe, the objects within the FOV, and the accompanying environments. But for some applications these 2D results are not sufficient, specifically applications that require Z dimensional data (depth data) along with the X and Y dimensional data. New designs of camera systems have previously been developed by integrating multiple cameras to provide 3D data, ranging from

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9

Reinhart, William Frank. "Effects of depth cues on depth judgments using a field-sequential stereoscopic CRT display /." This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07132007-143145/.

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10

Reinhart, William Frank. "Effects of depth cues on depth judgements using a field-sequential stereoscopic CRT display." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/38796.

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11

Li, Yan. "Depth Estimation from Structured Light Fields." Doctoral thesis, Universite Libre de Bruxelles, 2020. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/309512.

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Light fields have been populated as a new geometry representation of 3D scenes, which is composed of multiple views, offering large potentials to improve the depth perception in the scenes. The light fields can be captured by different camera sensors, in which different acquisitions give rise to different representations, mainly containing a line of camera views - 3D light field representation, a grid of camera views - 4D light field representation. When the captured position is uniformly distributed, the outputs are the structured light fields. This thesis focuses on depth estimation from the

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12

Rathjens, Richard G. "PLANTING DEPTH OF TREES - A SURVEY OF FIELD DEPTH, EFFECT OF DEEP PLANTING, AND REMEDIATION." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1243869972.

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13

Zammit, Paul. "Extended depth-of-field imaging and ranging in microscopy." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8081/.

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Conventional 3D imaging techniques such as laser scanning, focus-stacking and confocal microscopy either require scanning in all or a subset of the spatial dimensions, or else are limited by their depth of field (DOF). Scanning increases the acquisition time, therefore techniques which rely on it cannot be used to image moving scenes. In order to acquire both the intensity of the scene and its depth, extending the DOF without scanning is therefore necessary. This is traditionally achieved by stopping the system down (reducing the f/#). This, however, has the highly undesirable effect of loweri

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14

Axelsson, Natalie. "Depth of Field Rendering from Sparsely Sampled Pinhole Images." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281771.

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Optical lenses cause foreground and background objects to appear blurred, causing an effect called depth of field. Each point in the scene is projected onto the imaging plane as a semitransparent circle of confusion (CoC) with diameter depending on the distance between the point and the lens. In images rendered with a pinhole camera, the entire scene is in focus, but depth of field may be added synthetically for photorealism, aesthetics, or attention guiding purposes. However, most algorithms for depth of field rendering are either computationally expensive or produce noticeable artifacts. Thi

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15

Liu, Yang. "Simulating depth of field using per-pixel linked list buffer." Thesis, Purdue University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1598036.

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<p>In this thesis, I present a method for simulating three characteristics of depth of field image: partial occlusion, bokeh and blur. Retrieving color from occluded surfaces is achieved by constructing a per-pixel linked list buffer, which only requires two render passes. Additionally, per-pixel linked list buffer eliminates the memory overhead of empty pixels in depth layers. Bokeh and blur effect are accomplished by image-space point splatting (Lee 2008). I demonstrate how point splatting can be used to account for the effect of aperture shape and intensity distribution on bokeh. Spherical

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16

Henriksson, Ola. "A Depth of Field Algorithm for Realtime 3D Graphics in OpenGL." Thesis, Linköping University, Department of Science and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1169.

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<p>The company where this thesis was formulated constructs VR applications for the medical environment. The hardware used is ordinary dektops with consumer level graphics cards and haptic devices. In medicin some operations require microscopes or cameras. In order to simulate these in a virtual reality environment for educational purposes, the effect of depth of field or focus have to be considered. </p><p>A working algorithm that generates this optical occurence in realtime, stereo rendered computer graphics is presented in this thesis. The algorithm is implemented in OpenGL and C++ to later

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17

Vörös, Csaba, Norbert Zajzon, Endre Turai, and László Vincze. "Magnetic field measurement possibilities in flooded mines at 500 m depth." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-231251.

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The main target of the UNEXMIN project is to develop a fully autonomous submersible robot (UX-1) which can map flooded underground mines, and also deliver information about the potential raw materials of the mines. There are ca. 30 000 abandoned mines in Europe, from which many of them still could hold significant reserves of raw materials. Many of these mines are nowadays flooded and the latest information about them could be more than 100 years old. Although it is giving limited information, magnetic measurement methods, which detecting the local distortions of the Earth’s magnetic field can

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18

McDonnell, Ian. "Object segmentation from low depth of field images and video sequences." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/58630/.

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This thesis addresses the problem of autonomous object segmentation. To do so the proposed segementation method uses some prior information, namely that the image to be segmented will have a low depth of field and that the object of interest will be more in focus than the background. To differentiate the object from the background scene, a multiscale wavelet based assessment is proposed. The focus assessment is used to generate a focus intensity map, and a sparse fields level set implementation of active contours is used to segment the object of interest. The initial contour is generated using

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19

Rafiee, Gholamreza. "Automatic region-of-interest extraction in low depth-of-field images." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2194.

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Automatic extraction of focused regions from images with low depth-of-field (DOF) is a problem without an efficient solution yet. The capability of extracting focused regions can help to bridge the semantic gap by integrating image regions which are meaningfully relevant and generally do not exhibit uniform visual characteristics. There exist two main difficulties for extracting focused regions from low DOF images using high-frequency based techniques: computational complexity and performance. A novel unsupervised segmentation approach based on ensemble clustering is proposed to extract the fo

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Vörös, Csaba, Norbert Zajzon, Endre Turai, and László Vincze. "Magnetic field measurement possibilities in flooded mines at 500 m depth." TU Bergakademie Freiberg, 2017. https://tubaf.qucosa.de/id/qucosa%3A23184.

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The main target of the UNEXMIN project is to develop a fully autonomous submersible robot (UX-1) which can map flooded underground mines, and also deliver information about the potential raw materials of the mines. There are ca. 30 000 abandoned mines in Europe, from which many of them still could hold significant reserves of raw materials. Many of these mines are nowadays flooded and the latest information about them could be more than 100 years old. Although it is giving limited information, magnetic measurement methods, which detecting the local distortions of the Earth’s magnetic field can

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21

He, Ruojun. "Square Coded Aperture: A Large Aperture with Infinite Depth of Field." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1418078808.

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22

Duan, Jun Wei. "New regional multifocus image fusion techniques for extending depth of field." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3951602.

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23

Helbing, Katrin G. "Effects of display contrast and field of view on distance perception." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-10062009-020220/.

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24

Goss, Keith Michael. "Multi-dimensional polygon-based rendering for motion blur and depth of field." Thesis, Brunel University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294033.

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25

Widjanarko, Taufiq. "Hyperspectral interferometry for single-shot profilometry and depth-resolved displacement field measurement." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8349.

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A new approach to the absolute measurement of two-dimensional optical path differences is presented in this thesis. The method, which incorporates a white light interferometer and a hyperspectral imaging system, is referred to as Hyperspectral Interferometry. A prototype of the Hyperspectral Interferometry (HSI) system has been designed, constructed and tested for two types of measurement: for surface profilometry and for depth-resolved displacement measurement, both of which have been implemented so as to achieve single shot data acquisition. The prototype has been shown to be capable of perf

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26

Reddy, Serendra. "Automatic 2D-to-3D conversion of single low depth-of-field images." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/24475.

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This research presents a novel approach to the automatic rendering of 3D stereoscopic disparity image pairs from single 2D low depth-of-field (LDOF) images. Initially a depth map is produced through the assignment of depth to every delineated object and region in the image. Subsequently the left and right disparity images are produced through depth imagebased rendering (DIBR). The objects and regions in the image are initially assigned to one of six proposed groups or labels. Labelling is performed in two stages. The first involves the delineation of the dominant object-of-interest (OOI). The

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27

Abbott, Joshua E. "Interactive Depth-Aware Effects for Stereo Image Editing." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3712.

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This thesis introduces methods for adding user-guided depth-aware effects to images captured with a consumer-grade stereo camera with minimal user interaction. In particular, we present methods for highlighted depth-of-field, haze, depth-of-field, and image relighting. Unlike many prior methods for adding such effects, we do not assume prior scene models or require extensive user guidance to create such models, nor do we assume multiple input images. We also do not require specialized camera rigs or other equipment such as light-field camera arrays, active lighting, etc. Instead, we use only a

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28

Willingham, David George Winograd Nicholas. "Strong-field photoionization of sputtered neutral molecules for chemical imaging and depth profiling." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4536/index.html.

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29

Sanyal, Poulomi. "Depth of field enhancement of a particle analyzer microscope using wave-front coding." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83931.

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In this thesis we present an analytical solution to the problem of improving the depth of field (DOF) of a certain large magnification imaging system with a high numerical aperture (NA), illuminated with an incoherent source of light. As there is a definite trade-off between the focal depth and resolution achievable with such a system, our challenge was to find a system that would achieve both these objectives and at the same time be cost-effective and easy to implement.<br>Our choice of technique therefore was a novel optical wave front manipulation mechanism involving subsequent image

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Sorensen, Jordan (Jordan P. ). "Software simulation of depth of field effects in video from small aperture cameras." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61577.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 71-73).<br>This thesis proposes a technique for post processing digital video to introduce a simulated depth of field effect. Because the technique is implemented in software, it affords the user greater control over the parameters of the effect (such as the amount of defocus, aperture shape, and defocus plane) and allows the effect to be used even on hardware which would not typically allow for

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31

Hu, Guang-hua. "Extending the depth of focus using digital image filtering." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45653.

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<p>Two types of image processing methods capable of forming a composite image from a set of image slices which have in-focus as well as out-of-focus segments are discussed. The first type is based on space domain operations and has been discussed in the literature. The second type, to be introduced, is based on the intuitive concept that the spectral energy distribution of a focused object is biased towards lower frequencies after blurring. This approach requires digital image filtering in the spatial frequency domain. A comparison among methods of both types is made using a quantitative

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32

Atif, Muhammad [Verfasser], and Bernd [Akademischer Betreuer] Jähne. "Optimal Depth Estimation and Extended Depth of Field from Single Images by Computational Imaging using Chromatic Aberrations / Muhammad Atif ; Betreuer: Bernd Jähne." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177382679/34.

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33

Brooker, Julian P. "Eye movement controlled synthetic depth of field blurring in stereographic displays of virtual environments." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413506.

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34

Christoffersson, Anton. "Real-time Depth of Field with Realistic Bokeh : with a Focus on Computer Games." Thesis, Linköpings universitet, Informationskodning, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-163080.

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Depth of field is a naturally occurring effect in lenses describing the distance between theclosest and furthest object that appears in focus. The effect is commonly used in film andphotography to direct a viewers focus, give a scene more complexity, or to improve aes-thetics. In computer graphics, the same effect is possible, but since there are no naturaloccurrences of lenses in the virtual world, other ways are needed to achieve it. There aremany different approaches to simulate depth of field, but not all are suited for real-time usein computer games. In this thesis, multiple methods are e

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Vorhies, John T. "Low-complexity Algorithms for Light Field Image Processing." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1590771210097321.

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36

Gullapalli, Sai Krishna. "Wave-Digital FPGA Architectures of 4-D Depth Enhancement Filters for Real-Time Light Field Image Processing." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574443263497981.

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37

Williams, Sarah. "Depth of field : aspects of photography and film in the selected work of Michael Ondaatje." Thesis, University of Sussex, 2010. http://sro.sussex.ac.uk/id/eprint/2401/.

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This thesis examines aspects of photography and film in the selected work of Michael Ondaatje, specifically analysing their implementation and function within The Collected Works of Billy the Kid, Running In The Family, In the Skin of a Lion and The English Patient. Ondaatje's two films, Sons of Captain Poetry and The Clinton Special, as well as Anthony Minghella's film adaptation of The English Patient, are also examined. My critical approach is eclectic and driven by the demands of individual texts, focusing on some of the ways in which photography and film affect and help define the formal

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Lucotte, Bertrand M. "Fourier optics approaches to enhanced depth-of-field applications in millimetre-wave imaging and microscopy." Thesis, Heriot-Watt University, 2010. http://hdl.handle.net/10399/2323.

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In the first part of this thesis millimetre-wave interferometric imagers are considered for short-range applications such as concealed weapons detection. Compared to real aperture systems, synthetic aperture imagers at these wavelengths can provide improvements in terms of size, cost, depth-of-field (DoF) and imaging flexibility via digitalrefocusing. Mechanical scanning between the scene and the array is investigated to reduce the number of antennas and correlators which drive the cost of such imagers. The tradeoffs associated with this hardware reduction are assessed before to jointly optimi

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Kubíček, Martin. "Creating a Depth Map of Eye Iris in Visible Spectrum." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403824.

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Diplomová práce si dává za cíl navrhnout a uvést v praxi metodiku snímání oční duhovky ve viditelném spektru. Klade přitom důraz na kvalitu snímků, věrohodné podání barev vůči reálnému podkladu a hlavně na kontinuální hloubku ostrosti, která odhaluje dosud nezkoumané aspekty a detaily duhovky. V poslední řadě se také soustředí na co nejmenší vystavení duhovky fyzickému stresu. Metodika obsahuje přesné postupy jak snímat duhovku a zajištuje tím konzistentnost snímků. Tím umožní vytvářet databáze duhovek s ohledem na jejich vývoj v čase či jiném aspektu jako je například psychologický stav sníma

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Keogh, Teri M. "Changes in competition intensity, herbivory and stress along a soil depth gradient in an old field." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0021/MQ58467.pdf.

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O'Donnell, David Patrick. "FIELD AND MODELING STUDY OF THE EFFECTS OF STREAM DEPTH AND GROUND WATER DISCHARGE ON HYDROGEOPHYSICAL." Master's thesis, Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/187887.

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Geology<br>M.S.<br>Valley Creek, an urbanized stream in Southeastern Pennsylvania, has undergone changes typical of streams in urbanized areas, such as bank erosion, channel redirection, and habitat disruption. One area of disruption that has been little studied is the hyporheic zone, the top layer of the streambed where stream water exchanges with subsurface water and chemical transformations occur. The hyporheic zone of an 18 m reach of Valley Creek in Ecology Park was characterized using a tracer test coupled with a hydrogeophysical survey. Nested wells screened at depths of 20, 35, 50, and

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Kourakos, Alexander William. "Extended Depth-of-focus in a Laser Scanning System Employing a Synthesized Difference-of-Gaussians Pupil." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/33091.

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<p>Traditional laser scanning systems, such as those used for microscopy, typically image objects of finite thickness. If the depth-of-focus of such systems is low, as is the case when a simple clear pupil is used, the object must be very thin or the image will be distorted. Several methods have been developed to deal with this problem. A microscope with a thin annular pupil has a very high depth-of-focus and can image the entire thickness of a sample, but most of the laser light is blocked, and the image shows poor contrast and high noise. In confocal laser microscopy, the depth-of-focus prob

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Derafshi, Mohammadali H. "The effect of depth of placement of phosphorus fertiliser on the growth and development of field peas." Title page, contents and anstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phd427.pdf.

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Bibliography: leaves 190-212. This thesis reports on the results of 3 glasshouse and 3 field experiments. The glasshouse experiments measure the effects of depth of placement and level of phosphorus (P) on the growth of field peas (Pisum sativum L. cv. Alma). The results of all the experiments suggest that placing P fertiliser 4-5 cm below the seed of field pea crops will be beneficial in terms of nodulation, P uptake, grain yield and grain P concentration.

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Rogers, Claire. "Depth conversion methods for the Torsk Oilfield : investigating the complex velocity field of the Seaspray Group, Gippsland Basin /." Title page, abstract and table of contents only, 2003. http://web4.library.adelaide.edu.au/theses/09SB/09sbr7421.pdf.

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Lönroth, Per, and Mattias Unger. "Advanced Real-time Post-Processing using GPGPU techniques." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-14962.

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<p> </p><p>Post-processing techniques are used to change a rendered image as a last step before presentation and include, but is not limited to, operations such as change of saturation or contrast, and also more advanced effects like depth-of-field and tone mapping.</p><p>Depth-of-field effects are created by changing the focus in an image; the parts close to the focus point are perfectly sharp while the rest of the image has a variable amount of blurriness. The effect is widely used in photography and movies as a depth cue but has in the latest years also been introduced into computer games.<

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Chow, B. S. "Design a Phase Plate to Extend the Depth of Field for an Inexpensive Microscope System to Have the Muti-focus Ability." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42557.

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We propose an optical technique, also called wave front coding, that can extend the depth of field optically by phase plate without the need of post digital image processing (PDIP). This technique can replace the present expensive mechanical scanning for achieving 3D information recording or to avoid keeping adjusting the structure of the objective. This phase plate can be fabricated by the emerging technology of laser direct-write photoresist patterning and subsequent reactive ion etching on a germanium substrate. The niche of our innovation is the exempt of PDIP. The dependence on PDIP caus

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Jøraandstad, Susann. "Use of stacking velocity for depth prediction and lithological indication in the Challum field of the Cooper/Eromanga basin, Queensland /." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09SB/09sbj818.pdf.

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Thesis (B.Sc.(Hons.))--University of Adelaide, National Centre of Petroleum Geology and Geophyiscs, 1999.<br>Two folded enclosures in pocket inside backcover. Includes bibliographical references (2 leaves).

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"Flexible imaging for capturing depth and controlling field of view and depth of field." COLUMBIA UNIVERSITY, 2009. http://pqdtopen.proquest.com/#viewpdf?dispub=3348435.

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Custodio, Joao Pedro Barata Lourenco. "Depth Estimation using Light-Field Cameras." Master's thesis, 2014. http://hdl.handle.net/10316/40446.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>Plenoptic cameras or light field cameras are a recent type of imaging devices that are starting to regain some popularity. These cameras are able to acquire the plenoptic function (4D light field) and, consequently, able to output the depth of a scene, by making use of the redundancy created by the multi-view geometry, where a single 3D point is imaged several times. Despite the attention given in the literature to standard plenopti

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Tseng, Yi-Ning, and 曾翊寧. "Realtime Depth of Field Rendering with Bokeh Effect via Interactive Depth Labeling." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/26446918239640282284.

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碩士<br>國立臺灣大學<br>資訊網路與多媒體研究所<br>100<br>Shallow focus is a kind of photographic technique, which means taking a picture with a small depth of field (DOF) so that the objects outside of the DOF will be blurred to highlight the subject inside of the DOF. Common digital cameras, unlike the Digital Single Lens Reflex Camera (DSLR), cannot produce this special vision effect due to its limitations in aperture and focal length. Commercial softwares and even some common digital cameras are endued with built-in shallow focus simulation programs. However, the rendering quality of the existing tools is not

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