Relevant bibliographies by topics / Active stereoscopy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Active stereoscopy'

Author: Grafiati
Published: 28 June 2021
Last updated: 7 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Active stereoscopy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Active stereoscopy"

1

Wiegelmann, T., B. Inhester, and L. Feng. "Solar stereoscopy – where are we and what developments do we require to progress?" Annales Geophysicae 27, no. 7 (July 23, 2009): 2925–36. http://dx.doi.org/10.5194/angeo-27-2925-2009.

Full text
Abstract:
Abstract. Observations from the two STEREO-spacecraft give us for the first time the possibility to use stereoscopic methods to reconstruct the 3-D solar corona. Classical stereoscopy works best for solid objects with clear edges. Consequently an application of classical stereoscopic methods to the faint structures visible in the optically thin coronal plasma is by no means straight forward and several problems have to be treated adequately: 1) First there is the problem of identifying one-dimensional structures – e.g. active region coronal loops or polar plumes- from the two individual EUV-images observed with STEREO/EUVI. 2) As a next step one has the association problem to find corresponding structures in both images. This becomes more difficult as the angle between STEREO-A and B increases. 3) Within the reconstruction problem stereoscopic methods are used to compute the 3-D-geometry of the identified structures. Without any prior assumptions, e.g., regarding the footpoints of coronal loops, the reconstruction problem has not one unique solution. 4) One has to estimate the reconstruction error or accuracy of the reconstructed 3-D-structure, which depends on the accuracy of the identified structures in 2-D, the separation angle between the spacecraft, but also on the location, e.g., for east-west directed coronal loops the reconstruction error is highest close to the loop top. 5) Eventually we are not only interested in the 3-D-geometry of loops or plumes, but also in physical parameters like density, temperature, plasma flow, magnetic field strength etc. Helpful for treating some of these problems are coronal magnetic field models extrapolated from photospheric measurements, because observed EUV-loops outline the magnetic field. This feature has been used for a new method dubbed "magnetic stereoscopy". As examples we show recent application to active region loops.
APA, Harvard, Vancouver, ISO, and other styles
2

Mitiche, Amar, and Jean-Michel Létang. "Stereokinematic analysis of visual data in active convergent stereoscopy." Robotics and Autonomous Systems 25, no. 1-2 (October 1998): 43–71. http://dx.doi.org/10.1016/s0921-8890(98)00033-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Aschwanden, Markus J., and T. S. Bastian. "VLA stereoscopy of solar active regions. 1: Method and tests." Astrophysical Journal 426 (May 1994): 425. http://dx.doi.org/10.1086/174078.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Icasio-Hernández, O., Y. I. Curiel-Razo, C. C. Almaraz-Cabral, S. R. Rojas-Ramirez, and J. J. González-Barbosa. "MEASUREMENT ERROR WITH DIFFERENT COMPUTER VISION TECHNIQUES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W7 (September 12, 2017): 227–35. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w7-227-2017.

Full text
Abstract:
The goal of this work is to offer a comparative of measurement error for different computer vision techniques for 3D reconstruction and allow a metrological discrimination based on our evaluation results. The present work implements four 3D reconstruction techniques: passive stereoscopy, active stereoscopy, shape from contour and fringe profilometry to find the measurement error and its uncertainty using different gauges. We measured several dimensional and geometric known standards. We compared the results for the techniques, average errors, standard deviations, and uncertainties obtaining a guide to identify the tolerances that each technique can achieve and choose the best.
APA, Harvard, Vancouver, ISO, and other styles
5

Ulrich, Luca, Enrico Vezzetti, Sandro Moos, and Federica Marcolin. "Analysis of RGB-D camera technologies for supporting different facial usage scenarios." Multimedia Tools and Applications 79, no. 39-40 (August 11, 2020): 29375–98. http://dx.doi.org/10.1007/s11042-020-09479-0.

Full text
Abstract:
Abstract Recently a wide variety of applications has been developed integrating 3D functionalities. Advantages given by the possibility of relying on depth information allows the developers to design new algorithms and to improve the existing ones. In particular, for what concerns face morphology, 3D has led to the possibility to obtain face depth maps highly close to reality and consequently an improvement of the starting point for further analysis such as Face Detection, Face Authentication, Face Identification and Face Expression Recognition. The development of the aforementioned applications would have been impossible without the progress of sensor technologies for obtaining 3D information. Several solutions have been adopted over time. In this paper, emphasis is put on passive stereoscopy, structured light, time-of-flight (ToF) and active stereoscopy, namely the most used technologies for the cameras design and fulfilment according to the literature. The aim of this article is to investigate facial applications and to examine 3D camera technologies to suggest some guidelines for addressing the correct choice of a 3D sensor according to the application that has to be developed.
APA, Harvard, Vancouver, ISO, and other styles
6

Keebler, Joseph R., Florian Jentsch, and David Schuster. "The Effects of Video Game Experience and Active Stereoscopy on Performance in Combat Identification Tasks." Human Factors: The Journal of the Human Factors and Ergonomics Society 56, no. 8 (May 12, 2014): 1482–96. http://dx.doi.org/10.1177/0018720814535248.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Neupane, Chiranjivi, Anand Koirala, Zhenglin Wang, and Kerry Brian Walsh. "Evaluation of Depth Cameras for Use in Fruit Localization and Sizing: Finding a Successor to Kinect v2." Agronomy 11, no. 9 (September 5, 2021): 1780. http://dx.doi.org/10.3390/agronomy11091780.

Full text
Abstract:
Eight depth cameras varying in operational principle (stereoscopy: ZED, ZED2, OAK-D; IR active stereoscopy: Real Sense D435; time of flight (ToF): Real Sense L515, Kinect v2, Blaze 101, Azure Kinect) were compared in context of use for in-orchard fruit localization and sizing. For this application, a specification on bias-corrected root mean square error of 20 mm for a camera-to-fruit distance of 2 m and operation under sunlit field conditions was set. The ToF cameras achieved the measurement specification, with a recommendation for use of Blaze 101 or Azure Kinect made in terms of operation in sunlight and in orchard conditions. For a camera-to-fruit distance of 1.5 m in sunlight, the Azure Kinect measurement achieved an RMSE of 6 mm, a bias of 17 mm, an SD of 2 mm and a fill rate of 100% for depth values of a central 50 × 50 pixels group. To enable inter-study comparisons, it is recommended that future assessments of depth cameras for this application should include estimation of a bias-corrected RMSE and estimation of bias on estimated camera-to-fruit distances at 50 cm intervals to 3 m, under both artificial light and sunlight, with characterization of image distortion and estimation of fill rate.
APA, Harvard, Vancouver, ISO, and other styles
8

Aschwanden, Markus J., and T. S. Bastian. "VLA stereoscopy of solar active regions. 2: Altitude, relative motion, and center-to-limb darkening of 20 centimeter emission." Astrophysical Journal 426 (May 1994): 434. http://dx.doi.org/10.1086/174079.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, Y. "Coronal magnetic fields inferred from IR wavelength and comparison with EUV observations." Annales Geophysicae 27, no. 7 (July 13, 2009): 2771–77. http://dx.doi.org/10.5194/angeo-27-2771-2009.

Full text
Abstract:
Abstract. Spectropolarimetry using IR wavelength of 1075 nm has been proved to be a powerful tool for directly mapping solar coronal magnetic fields including transverse component directions and line-of-sight component intensities. Solar tomography, or stereoscopy based on EUV observations, can supply 3-D information for some magnetic field lines in bright EUV loops. In a previous paper \\citep{liu08} the locations of the IR emission sources in the 3-D coordinate system were inferred from the comparison between the polarization data and the potential-field-source-surface (PFSS) model, for one of five west limb regions in the corona (Lin et al., 2004). The paper shows that the region with the loop system in the active region over the photospheric area with strong magnetic field intensity is the region with a dominant contribution to the observed Stokes signals. So, the inversion of the measured Stokes parameters could be done assuming that most of the signals come from a relatively thin layer over the area with a large photospheric magnetic field strength. Here, the five limb coronal regions are studied together in order to study the spatial correlation between the bright EUV loop features and the inferred IR emission sources. It is found that, for the coronal regions above the stronger photospheric magnetic fields, the locations of the IR emission sources are closer to or more consistent with the bright EUV loop locations than those above weaker photospheric fields. This result suggests that the structures of the coronal magnetic fields observed at IR and EUV wavelengths may be different when weak magnetic fields present there.
APA, Harvard, Vancouver, ISO, and other styles
10

Vasilyev, Roman, Maksim Artamonov, Aleksandr Beletsky, Olga Zorkaltseva, Evgeniya Komarova, Irina Medvedeva, Aleksandr Mikhalev, et al. "Scientific goals of optical instruments of the National Heliogeophysical Complex." Solnechno-Zemnaya Fizika 6, no. 2 (June 27, 2020): 105–22. http://dx.doi.org/10.12737/szf-62202008.

Full text
Abstract:
Studies of the upper atmosphere have to be performed using optical photometric and spectrometric means. Modern devices allow precise photometry of the glow of the night atmosphere — airglow — with high temporal spatial and spectral resolution. As a result, the obtained airglow parameters make it possible to determine the physicochemical properties of the upper atmosphere and observe their variation under the influence of various factors. The National Heliogeophysical Complex, which is being created in Eastern Siberia, is therefore to include a certain set of modern optical instruments. The paper presents the main phenomena that will be investigated by the optical instruments of the complex, provides information on their composition and scientific goals, presents the results of preliminary studies performed using a prototype of the instruments. As a result of the studies, the presence of a significant (about 10 m/sec) vertical wind at various altitudes (100 and 250 km) was established, the importance of taking into account the vertical wind to study the vertical dynamics of the charged component was demonstrated. The long-term dynamics of the vertical wind at an altitude of about 100 km has a pronounced seasonal variations and the absence of diurnal variations, whereas the dynamics of the vertical wind at an altitude of 250 km has a pronounced diurnal variations, which is mostly clearly defined in winter. This suggests the presumed presence of vertical circulation cells at various altitude levels. The possibilities of optical stereoscopy and differential image analysis methods are demonstrated, as applied to the study of fast luminous formations and conducting active ground and space experiments to modify Earth's ionosphere. We report the results of the determination of a three-dimensional picture of a long-lived meteor track with the use of two wide-angle cameras. We propose an algorithm that allows us to get a stereo image of events occurring in the upper atmosphere, recorded simultaneously from different observation points. The joint work of the tools of this complex and the development of cooperation with third-party organizations are shown to be a good enough direction for further study of the vertical dynamics of Earth’s upper atmosphere and space weather phenomena.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Active stereoscopy"

1

Horák, Daniel. "Návrh software jednoúčelového stroje pro vizuální kontrolu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444978.

Full text
Abstract:
This master’s thesis deals with the fundamentals of machine vision application and its practical implementation. The research part is focused on the basic possibilities of image acquisition and image processing in different dimensions. The practical part describes the design of the dimension control algorithm using a 3D camera. This algorithm is then implemented in a single-purpose machine for optical dimension control.
APA, Harvard, Vancouver, ISO, and other styles
2

Asbery, Richard. "The design, development and evaluation of an active stereoscopic telepresence system." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/843020/.

Full text
Abstract:
The work presented in this thesis documents the design, development and evaluation of a high performance stereoscopic telepresence system. Such a system offers the ability to enhance the operator perception of a remote and potentially hazardous environment as an aid to performing a remote task. To achieve this sensation of presence demands the design of a highly responsive remote camera system. A high performance stereo platform has been designed which utilises state- of-the-art cameras, servo drives and gearboxes. It possesses four degrees of freedom; pan, elevation and two camera vergence motions, all of which are controlled simultaneously in real-time by an open architecture controller. This has been developed on a PC/AT bus architecture and utilises a PID control regime. The controller can be easily interfaced to a range of input devices such as electromagnetic head tracking systems which provide the trajectory data for controlling the remote mechatronic platform. Experiments have been performed to evaluate both the mechatronic system and operator oriented performance aspects of the telepresence system. The mechatronic system investigations identify the overall system latency to be 80ms, which is considerably less than other current systems. The operator oriented evaluation demonstrates the necessity for a head tracked telepresence system with a head mounted display system. The need for a low latency period to achieve high operator performance and comfort during certain tasks is also established. This is evident during trajectory following experiments where the operator is required to track a highly dynamic target. The telepresence system has been fully evaluated and demonstrated to enhance operator spatial perception via a sensation of visual immersion in the remote environment.
APA, Harvard, Vancouver, ISO, and other styles
3

Pretlove, John. "Stereoscopic eye-in-hand active machine vision for real-time adaptive robot arm guidance." Thesis, University of Surrey, 1993. http://epubs.surrey.ac.uk/843230/.

Full text
Abstract:
This thesis describes the design, development and implementation of a robot mounted active stereo vision system for adaptive robot arm guidance. This provides a very flexible and intelligent system that is able to react to uncertainty in a manufacturing environment. It is capable of tracking and determining the 3D position of an object so that the robot can move towards, and intercept, it. Such a system has particular applications in remotely controlled robot arms, typically working in hostile environments. The stereo vision system is designed on mechatronic principles and is modular, light-weight and uses state-of-the-art dc servo-motor technology. Based on visual information, it controls camera vergence and focus independently while making use of the flexibility of the robot for positioning. Calibration and modelling techniques have been developed to determine the geometry of the stereo vision system so that the 3D position of objects can be estimated from the 2D camera information. 3D position estimates are obtained by stereo triangulation. A method for obtaining a quantitative measure of the confidence of the 3D position estimate is presented which is a useful built-in error checking mechanism to reject false or poor 3D matches. A predictive gaze controller has been incorporated into the stereo head control system. This anticipates the relative 3D motion of the object to alleviate the effect of computational delays and ensures a smooth trajectory. Validation experiments have been undertaken with a Puma 562 industrial robot to show the functional integration of the camera system with the robot controller. The vision system is capable of tracking moving objects and the information this provides is used to update command information to the controller. The vision system has been shown to be in full control of the robot during a tracking and intercept duty cycle.
APA, Harvard, Vancouver, ISO, and other styles
4

Dmytriiev, Anton. "Exploring active galactic nuclei at extreme energies : analysis and modeling of multi-wavelength flares and preparation of CTA." Thesis, Université de Paris (2019-....), 2020. https://theses.md.univ-paris-diderot.fr/Dmytriiev_Anton_va2.pdf.

Full text
Abstract:
De nombreuses questions liées à la physique des jets des Noyaux Actifs de Galaxies restent ouvertes. Une classe particulière d’AGN, les blazars, a un jet pointant vers la Terre. Une telle orientation du jet nous permet de sonder une riche variété de phénomènes physiques mal compris sur les écoulements relativistes. Les blazars montrent une émission non thermique, provenant du jet, qui est très variable sur tout le spectre électromagnétique, des radiofréquences aux rayons gamma du TeV. Le flux d’énergie peut augmenter d’un ordre de grandeur sur des échelles de temps aussi courtes que quelques minutes, un phénomène appelé “sursaut” (flare), et aussi longues que des mois ou même des années. Malgré la quantité croissante de données disponibles sur plusieurs longueurs d’onde (multi-wavelength, MWL), l’origine et les mécanismes physiques derrière les sursauts fréquemment observés dans les blazars ne sont toujours pas bien compris. De nombreuses tentatives ont été faites pour décrire les flares avec différents modèles d’émission, mais les propriétés détaillées de l’évolution temporelle des flux dans différentes bandes spectrales restent difficiles à reproduire. Afin d’identifier les processus physiques impliqués lors des sursauts de blazars, j’ai développé un code radiatif polyvalent, basé sur un traitement dépendant du temps de l’accélération des particules, de l’échappement et du refroidissement radiatif. Le code calcule l’évolution dans le temps de la fonction de distribution des électrons dans la zone d’émission du blazar et le spectre de l’émission Synchrotron Self-Compton (SSC) par ces électrons. J’ai appliqué le code à un sursaut multi-lambda géant du blazar Mrk 421, représentant de la classe des BL Lacertae, qui est le sursaut le plus brillant détecté jusqu’ici en provenance de cette source. Dans notre approche, nous considérons le sursaut comme une perturbation modérée de l’état de flux stationnaire et recherchons des interprétations avec un nombre minimum de paramètres libres. En conséquence, j’ai développé un nouveau scénario physique de l’activité observé pendant le sursaut, qui décrit l’ensemble des données, comprenant des spectres à l’état haut de la source dans différentes gammes d’énergie, et des courbes de lumière multi-lambda du domaine optique aux rayons gamma VHE. Dans ce scénario, le processus déclenchant le sursaut est l’accélération des particules par un processus de type Fermi du second ordre, dû à la turbulence qui emerge au voisinage de la région d’émission stationnaire du blazar. Dans cette thèse, j’ai également effectué une analyse des données du High Energy Stereoscopic System (H.E.S.S.) de deux sursauts géants du blazar 3C 279, représentant de la classe des Flat Spectrum Radio Quasars (FSRQ). Enfin, j’ai contribué à la préparation du Cherenkov Telescope Array (CTA), qui est un observatoire de rayons gamma au sol de nouvelle génération, dont l’entrée en service est prévue à partir de 2022. L’instrument, qui est actuellement en cours de développement, aura des performances considérablement améliorées par rapport aux Imaging Atmospheric Cherenkov Telescopes (IACTs) qui sont actuellement en fonctionnement, y compris une couverture spectrale sans précédent de quelques dizaines de GeV à ~300 TeV. Dans le cadre du CTA, j’ai effectué des simulations de performances optiques du Gamma-Ray Cherenkov Telescope (GCT), l’un des trois modèles proposés de télescopes de petite taille (SST) pour CTA. De plus, en utilisant les observations d’étoiles brillantes effectuées par le prototype de télescope installé sur le site de l’Observatoire de Paris à Meudon, j’ai étudié l’effet de la micro-rugosité des miroirs du télescope sur la fonction d’étalement du point (PSF) et calculé le niveau de qualité de polissage des miroirs requis pour optimiser les performances
Many questions related to the physics of jets of Active Galactic Nuclei remain open. A particular subclass of AGN, blazars, have a jet pointing towards the Earth. Such suitable orientation of the jet allows us to probe a rich variety of poorly understood physical phenomena related to relativistic outflows. Blazars show non-thermal emission, originating from the jet, which is highly variable across the entire electromagnetic spectrum, from radio frequencies to TeV gamma-rays. The energy flux can enhance by an order of magnitude on time-scales as short as minutes, a phenomenon referred to as a “flare”, and as long as months or even years. Despite the growing amount of available multi-wavelength (MWL) data, the origin and the physical mechanisms behind the frequently observed flaring events in blazars are still not well understood. Many attempts have been made to describe the flares with different emission models, but detailed properties of flux variation patterns (light curves) in different wavebands remain difficult to reproduce. In order to identify physical processes that are involved during blazar outbursts, I have developed a versatile radiative code, based on a time-dependent treatment of particle acceleration, escape and radiative cooling. The code computes time evolution of the distribution function of electrons in the blazar emitting zone and the spectrum of the Synchrotron Self-Compton (SSC) emission by these electrons. I applied the code to a giant MWL flare of the blazar Mrk 421, a representative of the BL Lacertae class, which is the brightest VHE flare ever detected from this source. In our approach, we consider the flare as a moderate perturbation of the quiescent state and search for interpretations with a minimum number of free parameters. As a result, I developed a novel physical scenario of the flaring activity that describes the data set, comprising spectra in the high state of the source in different energy ranges, and MWL light curves from the optical domain to the VHE gamma-ray band. In this scenario, the process initiating the outburst is the second-order Fermi acceleration of particles due to turbulence arising in the vicinity of the blazar stationary emission region. In this thesis, I also performed analysis of High Energy Stereoscopic System (H.E.S.S.) data of two giant flares of the blazar 3C 279, a representative of the Flat Spectrum Radio Quasars (FSRQ) class. Finally, I contributed to preparation of Cherenkov Telescope Array (CTA), which is a new-generation ground-based gamma-ray observatory, expected to start operations in 2022. The instrument, which is presently under development, will have greatly improved performance compared to currently operating Imaging Atmospheric Cherenkov Telescopes (IACTs), including unprecedented spectral coverage from a few tens of GeV to ~300 TeV. In the context of CTA, I performed simulations of the optical performance of the Gamma-Ray Cherenkov Telescope (GCT), one of the three proposed designs of Small-Size Telescopes (SST) for CTA. Also, using the observations of bright stars done by the telescope prototype installed on the site of Paris Observatory in Meudon, I studied the effect of micro-roughness of the telescope mirrors on the point spread function (PSF) and calculated the level of the mirror polishing quality required to optimize the performances
APA, Harvard, Vancouver, ISO, and other styles
5

Brňák, Jan. "Binokulární vidění." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219746.

Full text
Abstract:
This masters thesis deals with the physiology of binocular vision people for obtaining two dimensional spatial perception of images with glasses. There are developed theoretical part of the physiology of vision, then writing available methods that are now widespread for obtaining stereoscopic scene. The work also describes shooting dynamic scene using a pair of identical cameras. It focuses mainly on OFF-AXES method and deals with the topic of the settings stereoscopic base. There is also realized a practical part, which works with the capture dynamic scenes using video cameras with a automatic control of cameras distance. Automatic control is performed using the parallel port and a stepper motor. For this purpose it is designed to work in hardware support and a program for mutual communication. Filmed a short movie was screened to a group and those observers evaluated the parameters that were specified in the created poll.
APA, Harvard, Vancouver, ISO, and other styles
6

Superina, Giulia. "Observation de noyaxu actifs de galaxies de type "blazar" avec les téléscopes H. E. S. S. : caractérisation de la variabilité au TeV du blazar PKS 2155-304." Palaiseau, Ecole polytechnique, 2008. http://www.theses.fr/2008EPXX0068.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Babazadeh, Hamed. "Active flow control of a precessing jet." Master's thesis, 2010. http://hdl.handle.net/10048/1636.

Full text
Abstract:
Active flow control of a precessing jet is the focus of this work. A round jet confined by a round cavity exhibits a self-excited rotational motion, precession, for a specific range of cavity lengths. Active flow control of this unstable flow provides the ability to control near-field mixing of the precessing jet. Twelve micro-jets on the periphery of the nozzle inlet are used as actuation and near-field pressure data is measured by four pressure probes at the chamber exit to monitor the flow behavior. A phase plane, based on pressure signals, is used to find a Reynolds number and actuation frequency range where actuation stabilizes the flow motion. Phase-locked stereoscopic PIV is also used to validate the pressure processing tool. The results confirm the pressure measurement and micro-jet actuation can be employed to develop a future closed-loop flow control on a precessing jet.
APA, Harvard, Vancouver, ISO, and other styles
8

Nunes, Henrique Silva Vinicius. "Les obturateurs à cristaux liquide pour la vision stéréoscopique et l'application 3D Dual View." Phd thesis, 2013. http://tel.archives-ouvertes.fr/tel-00908830.

Full text
Abstract:
In this thesis the main objectives were to improve the liquid crystal shutters and to develop a stereoscopic vision application called 3D Dual View. The vision quality of a 3D system based on active glasses is direct related to the performance of the liquid crystal shutters. There are a lot of parameters that plays an important role in the quality of 3D glasses. Thus, efforts were concentrated in the organization of the liquid crystal molecules between the substrates and in the liquid crystal itself. We studied different configurations of shutters using nematic liquid crystal and ferroelectric liquid crystal (smectic), with and without polymer. Furthermore, the ferroelectric samples were analyzed using a full optical snapshot matrix Mueller polarimenter made by UBO (Université de Bretagne Occidentale) in partnership with Télécom-Bretagne. The second part was the development of 3D Dual View System. It is a stereoscopic vision system based on a mixture of active and passive 3D solution which displays a 3D image that can be viewed simultaneously by two spectators, but from different perspectives. To allow two different points-of-view of a scene or object in three dimensions, the system has to multiplex four images, one pair to form the 3D image for one viewer in one perspective and the other pair for the second viewer in other perspective. We describe different techniques to multiplex and demultiplex the video streams taking into account the physiological aspects, market, image quality and the crosstalk. The crosstalk between the images leads to an effect called ghosting, which the viewer sees a low intensity image that belongs to the other viewer. Then, we also characterized the ghosting effect (crosstalk) and proposed an algorithm of ghostbusting to compensate it.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Active stereoscopy"

1

Giancola, Silvio, Matteo Valenti, and Remo Sala. A Survey on 3D Cameras: Metrological Comparison of Time-of-Flight, Structured-Light and Active Stereoscopy Technologies. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91761-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Active computer vision by cooperative focus and stereo. New York: Springer-Verlag, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Giancola, Silvio, Matteo Valenti, and Remo Sala. A Survey on 3D Cameras: Metrological Comparison of Time-of-Flight, Structured-Light and Active Stereoscopy Technologies. Springer, 2018.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

3-D-stereoscopic analysis of solar active region loops. [Washington, DC: National Aeronautics and Space Administration, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

J, Aschwanden Markus, and United States. National Aeronautics and Space Administration., eds. 3-D-stereoscopic analysis of solar active region loops. [Washington, DC: National Aeronautics and Space Administration, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

J, Aschwanden Markus, and United States. National Aeronautics and Space Administration., eds. 3-D-stereoscopic analysis of solar active region loops. [Washington, DC: National Aeronautics and Space Administration, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

J, Aschwanden Markus, and United States. National Aeronautics and Space Administration., eds. 3-D-stereoscopic analysis of solar active region loops. [Washington, DC: National Aeronautics and Space Administration, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Goode, Mike. Romantic Capabilities. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198862369.001.0001.

Full text
Abstract:
Romantic Capabilities argues that popular new media uses of literary texts often activate and make visible ways the texts were already about their relationship to medium. Devising and modelling a methodology that bridges historicist literary criticism and reception studies with media studies and formalism, it contends that how a literary text behaves when it encounters new media reveals capabilities in media that can transform how we understand the text’s significance for the original historical context in which it was created. Following an introductory chapter that explains and justifies its approach to the archive, the book analyses significant popular “media behaviors” exhibited by three major Romantic British literary corpuses: the viral circulation of William Blake’s pictures and proverbs across contemporary media, the gravitation of Victorian panorama painters and stereoscopic photographers to Walter Scott’s historical fictions, and the ongoing popular practice of writing fanfiction set in the worlds of Jane Austen’s novels and their imaginary country estates. Blake emerges from the study as an important theorist of how viral media can be used to undermine law, someone whose art deregulates through the medium of its audiences’ heterogeneous tastes and conflicting demands for wisdom. Scott’s novels are shown to have fostered a new experience of vision and understanding of frame that helped launch modern immersive media. Finally, Austenian realism is revealed as a mode of ecological design whose project fanfiction grasps and extends.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Active stereoscopy"

1

Giancola, Silvio, Matteo Valenti, and Remo Sala. "Metrological Qualification of the Intel D400™ Active Stereoscopy Cameras." In SpringerBriefs in Computer Science, 71–85. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91761-0_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhao, Guoying, and Xinyuan Huang. "The Introduction of Three Methods Generating Stereoscopic Image1." In Active Media Technology, 365–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45336-9_42.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

"Spatial Narration. Film Scenography Using Stereoscopic Technology." In Image – Action – Space, 69–78. De Gruyter, 2018. http://dx.doi.org/10.1515/9783110464979-006.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wann, John, and Simon Rushton. "Grasping the Impossible: Stereoscopic Virtual Balls." In Studies in Perception and Action III, 207–10. Routledge, 2019. http://dx.doi.org/10.4324/9781315789361-53.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"Systems and Practices to Produce Stereoscopic Space on Screen." In Image – Action – Space, 133–46. De Gruyter, 2018. http://dx.doi.org/10.1515/9783110464979-011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Anthony, Kolar, Romain Olivier, Graba Tarik, Ea Thomas, and Granado Bertr. "The Integrated Active Stereoscopic Vision Theory, Integration and Application." In Stereo Vision. InTech, 2008. http://dx.doi.org/10.5772/5896.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Blair, Nancye W. "Taking Elementary Document Camera Use to the Next Dimension." In Advances in Early Childhood and K-12 Education, 309–34. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2815-1.ch013.

Full text
Abstract:
The world’s first stereoscopic 3D document camera, the 3D Ladibug, is quite unique in its ability to facilitate an interactive and constructivist implementation of stereoscopic 3D content in the elementary classroom. By harnessing the 3D Ladibug’s dynamic capabilities, teachers and students are able to enhance lessons with custom-designed learning activities in science, mathematics, literacy, and other curriculum areas. Moreover, through a blend of anaglyph and full-color stereoscopic 3D images, students are able to translate this technology into applications with print media, video editing, and live-action presentations. In the pilot implementation, educators have observed increases in student excitement, engagement, attention span, learning gains, and the ease of instruction using manipulatives with young students. Additionally, the ability to custom create 3D curriculum has made distinct differences in the motivation for students to design working models and products that demonstrate a deeper understanding of concepts. Likewise, teachers were inspired to integrate an increased number of visual aids and hands-on activities into class activities when using this tool. Through its traditional 2D document camera functionalities and added stereoscopic 3D capabilities, the 3D Ladibug Document Camera proved to be a highly effective teaching tool, captivating students and teachers by breathing life into classroom models, manipulatives, and presentations.
APA, Harvard, Vancouver, ISO, and other styles
8

Andrés del Valle, Ana C. "Face Expression and Motion Analysis over Monocular Images." In Encyclopedia of Information Science and Technology, First Edition, 1174–79. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-553-5.ch207.

Full text
Abstract:
As computers evolve towards becoming more human-oriented machines, human-computer interfaces, behavior-learning robots, and disable-adapted computer environments will use face expression analysis to be able to react to human action. Furthermore, faces play an essential role in human communication. Consequently, they have been the first objects whose motion has been studied in order to recreate animation on synthesized models or to interpret motion for a posteriori use. The analysis of motion and expression from monocular (single) images is widely investigated because non-stereoscopic static images and videos are the most affordable and extensively used visual media (i.e., Webcams).
APA, Harvard, Vancouver, ISO, and other styles
9

Humphreys, Melanie, Deborah J. Rosenorn-Lanng, and Luke Bracegirdle. "Using a Virtual Learning Environment within Simulation to Enhance Inter-Professional Team Working Skills." In Advances in Healthcare Information Systems and Administration, 41–46. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4546-2.ch004.

Full text
Abstract:
This chapter details a collaborative teaching and learning evaluative project between Nursing and Midwifery, Pharmacy, and Medicine at Keele University to explore the development of team working skills (NOTECH) and debrief within an inter-professional active virtual learning environment (KAVE). The virtual ward and NOTECH training provided within the KAVE are thought to be the first of their kind within the UK. The project has recently been presented within Australia and Italy, and been very positively received. KAVE is a physical room where three-dimensional “stereoscopic” visuals display on three walls and the floor to create a computer-generated virtual environment. A student wears active 3D glasses and a lightweight head and hand-tracking device. The computer-generated visuals respond to position in the KAVE and allow the student to “pick up” and interact with digital objects such as care plans, prescription charts, observation charts, etc. The virtual ward is able to simulate observation and diagnostic skills training. ECG monitors' provide information regarding the status of each virtual patient within the ward. The virtual ward clinical simulation enabled the students to rehearse professional behaviours in a risk-free environment, whilst providing opportunities for non-technical skills practice prior to real-world patient encounters. Early evaluations received from students have been very positive.
APA, Harvard, Vancouver, ISO, and other styles
10

Wickens, Christopher D., and Polly Baker. "Cognitive Issues in Virtual Reality." In Virtual Environments and Advanced Interface Design. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195075557.003.0024.

Full text
Abstract:
Virtual reality involves the creation of multisensory experience of an environment (its space and events) through artificial, electronic means; but that environment incorporates a sufficient number of features of the non-artificial world that it is experienced as “reality.” The cognitive issues of virtual reality are those that are involved in knowing and understanding about the virtual environment (cognitive: to perceive and to know). The knowledge we are concerned with in this chapter is both short term (Where am I in the environment? What do I see? Where do I go and how do I get there?), and long term (What can and do I learn about the environment as I see and explore it?). Given the recent interest in virtual reality as a concept (Rheingold, 1991; Wexelblat, 1993; Durlach and Mavor, 1994), it is important to consider that virtual reality is not, in fact, a unified thing, but can be broken down into a set of five features, any one of which can be present or absent to create a greater sense of reality. These features consist of the following five points. 1. Three-dimensional (perspective and/or stereoscopic) viewing vs. two-dimensional planar viewing. (Sedgwick, 1986; Wickens et al., 1989). Thus, the geography student who views a 3D representation of the environment has a more realistic view than one who views a 2D contour map. 2. Dynamic vs. static display. A video or movie is more real than a series of static images of the same material. 3. Closed-loop (interactive or learner-centered) vs. open-loop interaction. A more realistic closed-loop mode is one in which the learner has control over what aspect of the learning “world” is viewed or visited. That is, the learner is an active navigator as well as an observer. 4. Inside-out (ego-referenced) vs. outside-in (world-referenced) frame-of-reference. The more realistic inside-out frame-of-reference is one in which the image of the world on the display is viewed from the perspective of the point of ego-reference of the user (that point which is being manipulated by the control). This is often characterized as the property of “immersion.” Thus, the explorer of a virtual undersea environment will view that world from a perspective akin to that of a camera placed on the explorer’s head;
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Active stereoscopy"

1

Jian-Ming Liao, Jian-Jun Yao, Da-Li Wang, and Ling Hu. "Multi-view naked-eye stereoscopic image fusion method research." In 2012 International Conference on Wavelet Active Media Technology and Information Processing (ICWAMTIP). IEEE, 2012. http://dx.doi.org/10.1109/icwamtip.2012.6413526.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ariyaeeinia, Aladdin M. "Calibration of an active stereoscopic imaging system." In Robotics - DL tentative, edited by Donald J. Svetkoff. SPIE, 1992. http://dx.doi.org/10.1117/12.57976.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ben-Hamadou, Achraf, Charles Soussen, Christian Daul, Walter Blondel, and Didier Wolf. "Flexible projector calibration for active stereoscopic systems." In 2010 17th IEEE International Conference on Image Processing (ICIP 2010). IEEE, 2010. http://dx.doi.org/10.1109/icip.2010.5651929.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Watkins, Wendell R., David H. Tofsted, V. Grayson CuQlock-Knopp, Jay B. Jordan, and John O. Merritt. "Navigation through fog using stereoscopic active imaging." In AeroSense 2000, edited by Jacques G. Verly. SPIE, 2000. http://dx.doi.org/10.1117/12.389357.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Benzeroual, Karim, and Robert S. Allison. "Cyber (motion) sickness in active stereoscopic 3D gaming." In 2013 International Conference on 3D Imaging (IC3D). IEEE, 2013. http://dx.doi.org/10.1109/ic3d.2013.6732090.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"AN ACTIVE STEREOSCOPIC SYSTEM FOR ITERATIVE 3D SURFACE RECONSTRUCTION." In 3D Model Aquisition and Representation. SciTePress - Science and and Technology Publications, 2007. http://dx.doi.org/10.5220/0002065500780084.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zeng, Menglin, and Truong Nguyen. "Crosstalk analysis in LCD stereoscopic displays with active shutter glasses." In 2012 IEEE Southwest Symposium on Image Analysis & Interpretation (SSIAI). IEEE, 2012. http://dx.doi.org/10.1109/ssiai.2012.6202479.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mademlis, Ioannis, Alexandros Iosifidis, Anastasios Tefas, Nikos Nikolaidis, and Ioannis Pitas. "Stereoscopic video description for human action recognition." In 2014 IEEE Symposium on Computational Intelligence for Multimedia, Signal and Vision Processing (CIMSIVP). IEEE, 2014. http://dx.doi.org/10.1109/cimsivp.2014.7013263.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Barcelos, Andre de Oliveira Palmerim, Fabio Silveira Vidal, and Paulo Fernando Ferreira Rosa. "Active stereoscopic camera to build an occupancy grid for autonomous navigation." In 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE). IEEE, 2014. http://dx.doi.org/10.1109/isie.2014.6864778.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ducrocq, Yann, Shahram Bahrami, Luc Duvieubourg, and Francois Cabestaing. "A visual attention focusing system using an active stereoscopic vision sensor." In 2010 2nd International Conference on Image Processing Theory, Tools and Applications (IPTA). IEEE, 2010. http://dx.doi.org/10.1109/ipta.2010.5586790.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Active stereoscopy' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography