To see the other types of publications on this topic, follow the link: Photometric method.

Dissertations / Theses on the topic 'Photometric method'

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

Select a source type:

Consult the top 46 dissertations / theses for your research on the topic 'Photometric method.'

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.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Somthong, Thammarat. "3D freeform surface measurement on coordinate measuring machine using photometric stereo method." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15270.

Full text
Abstract:
Surface metrology has been widely used in manufacturing for many years. There has been a wide range of techniques applied for measuring surface topography. A photometric stereo technique is one of the best ways for the analysis of three-dimensional (3D) surface textural patterns. Many published works are concerned the developed approach for recovering the 3D profiles from surface normal. This research not only presents a methodology used to retrieve the profiles of surface roughness standards but also investigates the uncertainty estimation of textural measurement determined by the photometric
APA, Harvard, Vancouver, ISO, and other styles
2

Pekelsky, James Regan Carleton University Dissertation Engineering Electrical. "The automated ordering of moire fringe contours using local photometric modelling of surface shading." Ottawa, 1988.

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

Damasso, Mario. "An M dwarf planet search programme using the photometric transit method: implementation of a new ground-based survey." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423486.

Full text
Abstract:
This work describes the most relevant steps undertaken for the development and installation of the survey APACHE (A PAthway toward the Characterization of Habitable Earths), and some of the main results obtained after the first observing season are presented. APACHE is the first long-term observing campaign based in Europe which is devised expressly for detecting extrasolar planets orbiting well selected, nearby M dwarfs by using the photometric transit method. The project was conceived at the end of 2008 and he survey makes use of an array of five automated 40 cm telescopes which started rout
APA, Harvard, Vancouver, ISO, and other styles
4

Bužas, Nerijus. "Medienos rietuvių glaudumo koeficiento įvertinimas fotometriniu metodu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100621_114813-47866.

Full text
Abstract:
Baigiamajame magistro darbe aprašyta apvaliosios medienos rietuvių fotonuotraukų analizė, siekiant įvertinti medienos rietuvių glaudumo koeficientą. Darbo tikslas – Įvertinti fotometrinio metodo taikymo apvaliosios medienos rietuvių glaudumo koeficiento nustatymui galimybes. Uždaviniai: • Įvertinti atsitiktinių ir sisteminių paklaidų dydžius, gaunamus apvaliosios medienos rietuvių glaudumo koeficientą, nustatant fotometriniu metodu. • Įvertinti fotometrinio metodo paklaidų priklausomybę nuo sortimentų rūšies. • Įvertinti paklaidų priklausomybę nuo medienos rietuvių glaudumo. Tyrimo objektas –
APA, Harvard, Vancouver, ISO, and other styles
5

Alapini, Odunlade Aude Ekundayo Pauline. "Transiting exoplanets : characterisation in the presence of stellar activity." Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/104834.

Full text
Abstract:
The combined observations of a planet’s transits and the radial velocity variations of its host star allow the determination of the planet’s orbital parameters, and most inter- estingly of its radius and mass, and hence its mean density. Observed densities provide important constraints to planet structure and evolution models. The uncertainties on the parameters of large exoplanets mainly arise from those on stellar masses and radii. For small exoplanets, the treatment of stellar variability limits the accuracy on the de- rived parameters. The goal of this PhD thesis was to reduce these source
APA, Harvard, Vancouver, ISO, and other styles
6

Yang, Qian, Xue-Bing Wu, Xiaohui Fan, et al. "Quasar Photometric Redshifts and Candidate Selection: A New Algorithm Based on Optical and Mid-infrared Photometric Data." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/627092.

Full text
Abstract:
We present a new algorithm to estimate quasar photometric redshifts (photo-zs), by considering the asymmetries in the relative flux distributions of quasars. The relative flux models are built with multivariate Skew-t distributions in the multidimensional space of relative fluxes as a function of redshift and magnitude. For 151,392 quasars in the SDSS, we achieve a photo-z accuracy, defined as the fraction of quasars with the difference between the photo-z z(p) and the spectroscopic redshift z(s), vertical bar Delta z vertical bar=vertical bar z(s)-z(p)vertical bar/(1 + z(s)) within 0.1, of 74
APA, Harvard, Vancouver, ISO, and other styles
7

D'Angelo, Paolo. "3D scene reconstruction by integration of photometric and geometric methods." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985352949.

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

Valieva, Inna. "Photometric Methods for Autonomous Tree Species Classification and NIR Quality Inspection." Thesis, KTH, Maskinkonstruktion (Inst.), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176266.

Full text
Abstract:
In this paper the brief overview of methods available for individual tree stems quality evaluation and tree species classification has been performed. The use of Near Infrared photometry based on conifer’s canopy reflectance measurement in near infrared range of spectrum has been evaluated for the use in autonomous forest harvesting. Photometric method based on the image processing of the bark pattern has been proposed to perform classification between main construction timber tree species in Scandinavia: Norway spruce (Picea abies) and Scots Pine (Pinus sylvestris). Several feature extraction
APA, Harvard, Vancouver, ISO, and other styles
9

Li, Linlin, Shiyin Shen, Jinliang Hou, et al. "GALACTIC EXTINCTION AND REDDENING FROM THE SOUTH GALACTIC CAP u -BAND SKY SURVEY: u -BAND GALAXY NUMBER COUNTS AND u − r COLOR DISTRIBUTION." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/623264.

Full text
Abstract:
We study the integral Galactic extinction and reddening based on the galaxy catalog of the South Galactic Cap u-band Sky Survey (SCUSS), where u-band galaxy number counts and u - r color distribution are used to derive the Galactic extinction and reddening respectively. We compare these independent statistical measurements with the reddening map of Schlegel et al. (SFD) and find that both the extinction and reddening from the number counts and color distribution are in good agreement with the SFD results at low extinction regions (E(B - V)(SFD) < 0.12 mag). However, for high extinction regions
APA, Harvard, Vancouver, ISO, and other styles
10

Marcatelli, Camilla. "Astrometric and photometric characterization of the PRISMA fish-eye cameras for meteor observations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15801/.

Full text
Abstract:
The project PRISMA is the first network for systematic surveillance of meteor and atmosphere. More specifically this thesis is about the astrometric and photometric characterization of PRISMA cameras and also the computation of meteoric trajectories. In the first and second chapter there is a general overview of meteor phenomena and a theoric description of meteoroid interaction with the atmosphere. At the beginning of the third chapter there is a description of the project, what it deals with and who partecipates. Then there is the general specification of the Basler camera and the tests that hav
APA, Harvard, Vancouver, ISO, and other styles
11

Graham, Matthew J., S. G. Djorgovski, Andrew J. Drake, et al. "Understanding extreme quasar optical variability with CRTS – I. Major AGN flares." OXFORD UNIV PRESS, 2017. http://hdl.handle.net/10150/625731.

Full text
Abstract:
There is a large degree of variety in the optical variability of quasars and it is unclear whether this is all attributable to a single (set of) physical mechanism(s). We present the results of a systematic search for major flares in active galactic nucleus (AGN) in the Catalina Real-time Transient Survey as part of a broader study into extreme quasar variability. Such flares are defined in a quantitative manner as being atop of the normal, stochastic variability of quasars. We have identified 51 events from over 900 000 known quasars and high-probability quasar candidates, typically lasting 9
APA, Harvard, Vancouver, ISO, and other styles
12

Quéau, Yvain. "Reconstruction tridimensionnelle par stéréophotométrie." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14684/1/YQUEAU.pdf.

Full text
Abstract:
Cette thèse traite de la reconstruction 3D par stéréophotométrie, qui consiste à utiliser plusieurs photographies d'une scène prises sous le même angle, mais sous différents éclairages. Nous nous intéressons dans un premier temps à des techniques robustes pour l'estimation des normales à la surface, et pour leur intégration en une carte de profondeur. Nous étudions ensuite deux situations où le problème est mal posé : lorsque les éclairages sont inconnus, ou lorsque seuls deux éclairages sont utilisés. La troisième partie est consacrée à l'étude de modèles plus réalistes, à la fois en ce qui c
APA, Harvard, Vancouver, ISO, and other styles
13

Pearson, Kyle A., Leon Palafox, and Caitlin A. Griffith. "Searching for exoplanets using artificial intelligence." OXFORD UNIV PRESS, 2018. http://hdl.handle.net/10150/627143.

Full text
Abstract:
In the last decade, over a million stars were monitored to detect transiting planets. Manual interpretation of potential exoplanet candidates is labour intensive and subject to human error, the results of which are difficult to quantify. Here we present a new method of detecting exoplanet candidates in large planetary search projects that, unlike current methods, uses a neural network. Neural networks, also called 'deep learning' or 'deep nets', are designed to give a computer perception into a specific problem by training it to recognize patterns. Unlike past transit detection algorithms, dee
APA, Harvard, Vancouver, ISO, and other styles
14

Karalidi, Theodora, Dániel Apai, Mark S. Marley, and Esther Buenzli. "MAPS OF EVOLVING CLOUD STRUCTURES IN LUHMAN 16AB FROM HST TIME-RESOLVED SPECTROSCOPY." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/621380.

Full text
Abstract:
WISE J104915.57-531906.1 is the nearest brown dwarf binary to our solar system, consisting of two brown dwarfs in the L/T transition: Luhman 16A and B. In this paper, we present the first map of Luhman 16A, and maps of Luhman 16B for two epochs. Our maps were created by applying Aeolus, a Markov-Chain Monte Carlo code that maps the top-of-the-atmosphere (TOA) structure of brown dwarf and other ultracool atmospheres, to light curves of Luhman 16A and B using the Hubble Space Telescope's G141 and G102 grisms. Aeolus retrieved three or four spots in the TOA of Luhman 16A and B, with a surface cov
APA, Harvard, Vancouver, ISO, and other styles
15

Shan, Yutong, Jennifer C. Yee, Brendan P. Bowler, et al. "The Multiplicity of M Dwarfs in Young Moving Groups." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/627110.

Full text
Abstract:
We image 104 newly identified low-mass (mostly M-dwarf) pre-main sequence (PMS) members of nearby young moving groups (YMGs) with Magellan Adaptive Optics (MagAO) and identify 27 stellar binaries with instantaneous projected separation as small as 40 mas. Fifteen were previously unknown. The total number of multiple systems in this sample including spectroscopic and visual binaries from the literature is 36, giving a raw stellar multiplicity rate of at least 35(-4)(+5)% for this population. In the separation range of roughly 1-300 au in which infrared AO imaging is most sensitive, the raw mult
APA, Harvard, Vancouver, ISO, and other styles
16

Joner, Michael Deloss. "High-Quality Broadband BVRI Photometry of Benchmark Open Clusters." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2495.

Full text
Abstract:
Photometric techniques are often used to observe stars and it can be demonstrated that fundamental stellar properties can be observationally determined using calibrated sets of photometric data. Many of the most powerful techniques utilized to calibrate stellar photometry employ the use of stars in clusters since the individual stars are believed to have many common properties such as age, composition, and approximate distance. Broadband photometric Johnson/Cousins BVRI observations are presented for several nearby open clusters. The new photometry has been tested for consistency relative to a
APA, Harvard, Vancouver, ISO, and other styles
17

Larionov, V. M., M. Villata, C. M. Raiteri, et al. "Exceptional outburst of the blazar CTA 102 in 2012: the GASP–WEBT campaign and its extension." OXFORD UNIV PRESS, 2016. http://hdl.handle.net/10150/621728.

Full text
Abstract:
After several years of quiescence, the blazar CTA 102 underwent an exceptional outburst in 2012 September-October. The flare was tracked from gamma-ray to near-infrared (NIR) frequencies, including Fermi and Swift data as well as photometric and polarimetric data from several observatories. An intensive Glast-Agile support programme of the Whole Earth Blazar Telescope (GASP-WEBT) collaboration campaign in optical and NIR bands, with an addition of previously unpublished archival data and extension through fall 2015, allows comparison of this outburst with the previous activity period of this b
APA, Harvard, Vancouver, ISO, and other styles
18

Nilsson, Helen. "The change of haemoglobin during blood donation, and an assessment of a photometrical method for non-invasive haemoglobin analysis." Thesis, Uppsala universitet, Institutionen för kvinnors och barns hälsa, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-210904.

Full text
Abstract:
In Sweden, lowest acceptable haemoglobin levels in blood donators are 125g/L for women and 135g/L for men for a test sample taken in the beginning of the blood donation. Levels, which are 10g/L lower, are accepted if the sample is taken after the blood donation. Earlier studies show that the haemoglobin level decreases for a person that is lying down. The two aims of this study were to examine how much the haemoglobin levels change during blood donation and to examine if the photometrical instrument Pronto-7TM shows equivalent results to that of the established method Cell-Dyn Sapphire. In the
APA, Harvard, Vancouver, ISO, and other styles
19

Komar, Bogdana. "Macular pigment optical density measurements by one-wavelength reflection photometry – Influence of cataract surgery on the measurement results." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-172371.

Full text
Abstract:
Purpose: The main objective of the present study was the investigation of possible influence of lens opacification on macular pigment optical density (MPOD) measurements. Methods: 86 eyes of 64 patients (mean age 73.4(±8.3)years) were included in the study. MPOD was prospectively measured using one-wavelength reflection method (Visucam500, Carl Zeiss Meditec AG) before and after cataract extraction with implantation of a blue-light filtering intraocular lens (AlconSN60WF). The median of the maximum optical density (MaxOD) and the median of the mean optical density (MeanOD) measurements of ma
APA, Harvard, Vancouver, ISO, and other styles
20

Kutý, Tomáš. "Blízká fotometrie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221203.

Full text
Abstract:
This thesis is focused on the theoretical and practical introduction to the verification procedures used today for obtaining luminosity curves of lamps. The introduction acquaints readers with the photometric variables. Consequently, it is theoretically described procedure for constructing luminance curves by zonal flow and further familiarization with the near-field photometry. For the practical part was chosen several lights. These lamps were measured by luxmeter first from a very close photometric distance from lights, and then from large distance. The next step was to obtain pictures of lu
APA, Harvard, Vancouver, ISO, and other styles
21

Lindner, John Vyvyan, and University of Lethbridge Faculty of Arts and Science. "SHIFTS : simulator for the Herschel imaging fourier transform spectrometer." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/276.

Full text
Abstract:
The Spectral and Photometric Imaging Receiver (SPIRE) is one of three scientific instruments on the European Space Agency's (ESA's) Herschel Space Observatory (HSO). The medium resolution spectroscopic capabilities of SPIRE are provided by an imaging Fourier transform spectrometer (IFTS). A software simulator of the SPIRE IFTS was written to generate realistic data products, making use of available qualification and test data. We present the design and implementation of the simulator. Component and end-to-end simulations were compared to results from the first SPIRE instrument proto-flight mod
APA, Harvard, Vancouver, ISO, and other styles
22

Svoboda, Miloslav. "Srovnání konvenčních a nových metod měření a hodnocení jasů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219397.

Full text
Abstract:
Because luminance is the only value to which our sight responds, its measurement becomes important in terms of ensuring the proper function of vision. Nowadays luminance measuring can be made by conventional methods, such as direct using of luminance meter. However an entirely new method of measuring luminance levels is coming. This method is based on using luminance analyzers which work using a digital photography for the analysis of luminance. This thesis deals with these issues and is divided into several chapters, which form the two main parts of the thesis, the theoretical and the practic
APA, Harvard, Vancouver, ISO, and other styles
23

Hansson, Peter. "Surface Characterization using Radiometric and Fourier Optical Methods." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3569.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Ferreira, Joao. "Occultations stellaires. Une nouvelle approche grâce à la mission Gaia." Thesis, Université Côte d'Azur, 2020. http://www.theses.fr/2020COAZ4084.

Full text
Abstract:
Les astéroïdes participent à la compréhension de plusieurs problèmes clés liés à la science du système solaire et à l’environnement spatial de notre planète, tels que les conditions du système solaire lors de sa formation, l’apport d’eau et de molécules organiques sur la Terre, le danger potentiel des astéroïdes proches de la Terre et leur rôle dans l’influence du climat de la Terre.Les occultations stellaires sont une occasion unique d’obtenir du sol une astrométrie astéroïde très précise, proche de la performance de Gaia, ainsi que des formes pour les astéroïdes. Lorsqu’un astéroïde cache la
APA, Harvard, Vancouver, ISO, and other styles
25

Delaye, Vincent. "Étude et réalisation d'un télémètre laser par temps de vol." Grenoble INPG, 2000. http://www.theses.fr/2000INPG0063.

Full text
Abstract:
Ce travail est consacre a l'etude theorique et experimentale d'un systeme de telemetrie laser utilisant la mesure du temps de vol. Cette technique consiste a emettre, en direction d'une cible, une impulsion de lumiere intense et tres courte, puis a chronometrer le trajet aller-retour de cette impulsion. Les impulsions detectees par une photodiode a avalanche sont converties en un signal numerique. Contrairement a une technique classique de seuillage, c'est la position du sommet des impulsions qui est exploitee pour la mesure du temps de vol. Cette methode permet d'atteindre des precisions sur
APA, Harvard, Vancouver, ISO, and other styles
26

Wit, Julien de, Nikole K. Lewis, Heather A. Knutson, et al. "Planet-induced Stellar Pulsations in HAT-P-2's Eccentric System." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/624378.

Full text
Abstract:
Extrasolar planets on eccentric short-period orbits provide a laboratory in which to study radiative and tidal interactions between a planet and its host star under extreme forcing conditions. Studying such systems probes how the planet's atmosphere redistributes the time-varying heat flux from its host and how the host star responds to transient tidal distortion. Here, we report the insights into the planet-star interactions in HAT-P-2's eccentric planetary system gained from the analysis of similar to 350 hr of 4.5 mu m observations with the Spitzer Space Telescope. The observations show no
APA, Harvard, Vancouver, ISO, and other styles
27

Skuljan, Ljiljana. "R Coronae Borealis stars : characteristics of their decline phase." Thesis, University of Canterbury. Physics and Astronomy, 2001. http://hdl.handle.net/10092/1308.

Full text
Abstract:
R Coronae Borealis (RCB) stars belong to a rare class of variable stars characterized by sudden and unpredictable declines, which are believed to be caused by dust cloud obscuration. In spite of the fact that these stars are so rare (only about 40 are known in our Galaxy), there are many reasons for investigating them. The unusual variability and peculiar chemical composition make them unique among all known types of variable stars. Their evolution and the nature of their unpredictable minima are still not entirely understood. Very few observations of RCB stars during the decline phase exist.
APA, Harvard, Vancouver, ISO, and other styles
28

Hill, David T. "The optical and NIR luminous energy output of the Universe : the creation and utilisation of a 9 waveband consistent sample of galaxies using UKIDSS and SDSS observations with the GAMA and MGC spectroscopic datasets." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1696.

Full text
Abstract:
Theories of how galaxies form and evolve depend greatly on constraints provided by observations. However, when those observations come from different datasets, systematic offsets may occur. This causes difficulties measuring variations in parameters between filters. In this thesis I present the variation in total luminosity density with wavelength in the nearby Universe (z<0.1), produced from a consistent reanalysis of NIR and optical observations, taken from the MGC, UKIDSS and SDSS surveys. I derive luminosity distributions, best-fitting Schechter function parameterisations and total luminos
APA, Harvard, Vancouver, ISO, and other styles
29

Örndahl, Eva. "Quasar host galaxies at intermediate and high redshifts." Doctoral thesis, Uppsala University, The Uppsala Astronomical Observatory, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3451.

Full text
Abstract:
<p>Quasars form one of the most energetic phenomena in the universe, and can be traced out to very large redshifts. By studying the galaxies which host the active nuclei, important insights can be gained into the processes that trigger and maintain the quasar powerhouse. The evolution rate of the quasar population is furthermore similar to that of ordinary galaxies, which implies a connection between black hole accretion and star formation in the host galaxies. While the properties of quasar host galaxies at low redshift have become better constrained in recent years, less is known about hosts
APA, Harvard, Vancouver, ISO, and other styles
30

Grosset, Lucas. "Observations extragalactiques avec optique adaptative : polarisation dans les noyaux actifs de Galaxie et étude des super amas d'étoiles." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEO004/document.

Full text
Abstract:
Malgré l’existence de modèles précis, notre connaissance des structures à petite échelle des galaxies est toujours limitée par le manque de preuves observationnelles. Les progrès instrumentaux ont permis d’atteindre une haute résolution angulaire à l’aide des nouvelles générations de télescopes, mais celle-ci est restreinte à un faible nombre de cibles extragalactiques à causes des besoins de l’Optique Adaptative (OA). En effet, afin de permettre une mesure efficace du front d’onde, l’OA requiert une source brillante et ponctuelle proche de la cible scientifique, typiquement en dessous de 30 .
APA, Harvard, Vancouver, ISO, and other styles
31

Marchiori, Victor. "Extraction photométrique bord des étoiles de la mission PLATO : masques photométriques optimaux pour la détection de planètes extra-solaires In-flight photometry extraction of PLATO targets Optimal apertures for detecting extrasolar planets The PLATO Solar-like Light-curve Simulator A tool to generate realistic stellar light-curves with instrumental effects representative of the PLATO mission." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEO014.

Full text
Abstract:
PLAnetary Transits and Oscillations of stars (PLATO) est une mission scientifique spatiale européenne dédiée à la sismologie stellaire et à la recherche d’exoplanètes, et dont le développement est coordonné par l’Agence Spatiale Européenne. Avec un intérêt majeur sur des planètes du type terrestre située dans la zone habitable des étoiles du type solaire de la séquence principale, cette mission repose sur de la photométrie de très haute précision et exige une très grande stabilité des mesures. Elle s’appuie sur des techniques bien éprouvées : la méthode de transits pour la détection des planèt
APA, Harvard, Vancouver, ISO, and other styles
32

Pavelka, Adam. "Numerické modelování zdrojů světla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219144.

Full text
Abstract:
The master’s thesis deals with photometry units used in light engineering. There are defined the methods of modelling the illumination systems, their advantages, disadvantages and possibilities of using. Furthermore, the thesis deals with modelling of two illumination systems by ray-tracing in programming environment of MATLAB. The master’s thesis describes the analysis of the problem and the program designing process. Acquired model results are then compared with the real measurements of both illumination systems which allow the discussion of the results and the deviations of the models.
APA, Harvard, Vancouver, ISO, and other styles
33

Harder, Stephan. "Reconstruction de la réponse impulsionnelle du système d'optique adaptative ADONIS à partir des mesures de son analyseur de surface d'onde et étude photométrique de la variabilité des étoiles YY Orionis." Phd thesis, Université Joseph Fourier (Grenoble), 1999. http://tel.archives-ouvertes.fr/tel-00686688.

Full text
Abstract:
La résolution angulaire des observations à partir du sol est limitée par la turbulence atmosphérique qui déforme aléatoirement le front d'onde de la lumière d'un objet céleste. L'optique adaptative a été développée pour corriger cette déformation en temps réel. Cependant, cette correction n'est souvent que partielle, et une déconvolution de l'image s'impose dans le but d'effectuer une photométrie de bonne précision. La première partie de ce manuscrit est consacrée à l'estimation de la réponse impulsionnelle pour le système d'optique adaptative ADONIS du télescope de 3.6m de PUEO. La variabilit
APA, Harvard, Vancouver, ISO, and other styles
34

Lin, Huang-Hui, and 林晃暉. "Determination of Chromium by Gas Chromatography/Flame Photometric Detection Method." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/86015882044679246285.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Zheng, Zhao-Yuan, and 鄭詔元. "3-D Model Reconstruction Using Three Light Source Photometric Stereo Method." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/33848060736111514624.

Full text
Abstract:
碩士<br>義守大學<br>電機工程學系<br>89<br>The subject of this thesis is to reconstruct object’s 3D model by acquiring the data from inputted 2D images. “Three light source photometric stereo method” is employed in the system we developed , and we also call this method “3S PSM”. The 3S PSM is a real object-based 3D model reconstruction technique , and all those real objects used to reconstruct the 3D models are with Lambertian surfaces, which means when a light source illuminates the objects , surfaces covered on those objects will uniformly diffuse the incidence light. The 3S PSM is different from the 3D
APA, Harvard, Vancouver, ISO, and other styles
36

Hsiung, Lan Wen, and 藍文雄. "Shape Estimation of Flip Chip Bump using Shape from Photometric Stereo Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/34516170816167802624.

Full text
Abstract:
碩士<br>國立臺灣科技大學<br>電機工程系<br>92<br>As the trend toward miniature and compact products continues, one of the key technologies that is helping to achieve this goal is packaging with flip chip technology. Usually, the flip chip is packaged in CGA and MBGA or TBGA forms, but with the flip chip on board directly, the cost and performance is better than others. This presents us with a problem: The coplanarity of the chip affects the reliability of the board after the SMT process. In this thesis we try to develop a method to estimate the shape of a flip chip’s bumps before they are mounted on the PCB s
APA, Harvard, Vancouver, ISO, and other styles
37

Liu, Tsung —Yu, and 劉宗諭. "The Implementation and Applications of A 3D Reconstruction System Using Photometric Stereo Method." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/30221156521352883427.

Full text
Abstract:
碩士<br>義守大學<br>電機工程學系<br>90<br>The subject of this thesis is to reconstruct object’s 3D model from several 2.5 D surface information obtained by processing the input 2D images. “The three light source photometric stereo method” is implemented in the developed 3D reconstruction system, and this method will be abbreviated as “3S PSM”. The 3S PSM is a 3D model reconstruction technique applied on real objects, and all the objects used to reconstruct the 3D models are preferred to have Lambertian surfaces, which means when a light source illuminates the object, the surfaces of the object will unifor
APA, Harvard, Vancouver, ISO, and other styles
38

Ting, Tsou-Hui, and 丁佐蕙. "Determination of Chromium by Solid-Phase Microextraction and Gas Chromatography/Flame Photometric Detection Method." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/61185494692913918224.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

CHEN, CHI-HSIEN, and 陳祺賢. "Measurement of lumbar spinal motion, lumber lordosis and surface contour of back with photometric stereo method." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/26308043272102226660.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

"Non-Invasive Method To Detect The Changes Of Glucose Concentration In Whole Blood Using Photometric Technique." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.20970.

Full text
Abstract:
abstract: A noninvasive optical method is developed to monitor rapid changes in blood glucose levels in diabetic patients. The system depends on an optical cell built with a LED that emits light of wavelength 535nm that is a peak absorbance of hemoglobin. As the glucose concentration in the blood decreases, its osmolarity also decreases and the RBCs swell and decrease the path length absorption coefficient. Decreasing absorption coefficient increases the transmission of light through the whole blood. The system was tested with a constructed optical cell that held whole blood in a capillary tub
APA, Harvard, Vancouver, ISO, and other styles
41

D'Angelo, Pablo. "3D scene reconstruction by integration of photometric and geometric methods /." 2007. http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:361-11458.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

D'Angelo, Pablo [Verfasser]. "3D scene reconstruction by integration of photometric and geometric methods / Pablo d'Angelo." 2007. http://d-nb.info/985352949/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Shie, Fu-chi, and 謝阜圻. "Determining Optical Constants and Thickness of Indium Tin Oxide Thin Films by Photometry Method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/23168891496985027425.

Full text
Abstract:
碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>99<br>The experiment was to determine the optical constants and thickness of Indium Tin Oxide thin films by photometry method and to create a program to calculate those values. The transmission data was obtained from U-3501 UV-Visible-NIR Spectrophotometer. The transmission data was fitted by cubic spline method to obtain a curve line regression. Using the photometry method to calculate the reflective index, nf, the extinction coefficient, kf, and the thickness, df, of the Indium Tin Oxide thin film. Using calculated the thickness, df, from fitted data with R. Swa
APA, Harvard, Vancouver, ISO, and other styles
44

Giuppone, Cristian Andrés. "Ajustes orbitales y dinámica de sistemas planetarios extrasolares /." Doctoral thesis, 2011. http://hdl.handle.net/11086/151.

Full text
Abstract:
Tesis (Doctor en Astronomía)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2011.<br>El presente trabajo explica y desarrolla estrategias para la determinación de parámetros orbitales de sistemas exoplanetarios a partir de datos de velocidad radial, que son un requisito fundamental para cualquier estudio dinámico. Muchas veces los descubrimientos de exoplanetas muestran configuraciones dinámicamente inestables, implicando que no es consistente con la configuración real de los mismos. Debido a que muchas veces los resultados de los ajustes orbitales son muy se
APA, Harvard, Vancouver, ISO, and other styles
45

Cadieux, Charles. "Suivi photométrique de candidates exoplanètes identifiées par le Transiting Exoplanet Survey Satellite." Thesis, 2020. http://hdl.handle.net/1866/25124.

Full text
Abstract:
La majorité des exoplanètes connues à ce jour ont été découvertes par la méthode du transit, qui infère indirectement l’existence de tels objets, si l’alignement le permet, en mesurant la baisse temporaire et répétée de la brillance d’une étoile lors du passage d’une exoplanète devant celle-ci. La recherche de biosignatures, donc de vie, dans l’atmosphère d’une exoplanète est désormais le principal objectif dans ce domaine d’études, et pour maintes raisons, celles de taille de moins d’approximativement deux rayons terrestres autour d’étoiles naines rouges sont particulièrement convoitées. Afin
APA, Harvard, Vancouver, ISO, and other styles
46

O´Mill, Ana Laura. "Estudios estadísticos en entornos de galaxias /." Doctoral thesis, 2011. http://hdl.handle.net/11086/153.

Full text
Abstract:
Tesis (Doctor en Astronomía)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2011.<br>En este trabajo de Tesis se presentan los resultados provenientes de análisis estadísticos de galaxias en diferentes medios. Utilizando información de los redshifts fotométricos obtenidas a través de redes neuronales para los datos de SDSS versión 6, se estudian los efectos del medio en entornos de galaxias y los colores a redshift z < 0.6. Se analizan las densidades de galaxias proyectadas, obtenidas de la distancia del vecino más cercano. Se presenta un catálogo de redshift
APA, Harvard, Vancouver, ISO, and other styles
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!