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Dissertations / Theses on the topic 'Segmentation. eng'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Santos, Edinéia Aparecida dos. "Utilização de equações diferenciais parciais no tratamento de imagens orbitais /." Presidente Prudente : [s.n.], 2002. http://hdl.handle.net/11449/86816.

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Orientador: Erivaldo Antonio da Silva<br>Resumo: Este trabalho apresenta um modelo matemático alternativo aos filtros passa-baixas convencionais no Processamento Digital de Imagens. O modelo de Equação Diferencial Parcial (EDP) foi aplicado em imagens orbitais para extração das feições de interesse e os resultados obtidos foram comparados com os resultados do operador de Sobel e o Gradiente Morfológico. O modelo matemático utilizado no trabalho foi baseado na teoria de EDPs e surge como uma proposta metodológica alternativa para a área de Cartografia. O modelo de EDP consiste em aplicar seleti

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Gambarato, Renato Luiz 1980. "Desenvolvimento de um programa computacional para classificação do uso da terra em imagens CBERS 2 /." Botucatu : [s.n.], 2008. http://hdl.handle.net/11449/90643.

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Orientador: Célia Regina Lopes Zimback<br>Banca: Zacarias Xavier de Barros<br>Banca: Osmar Delmanto Junior<br>Resumo: Entre as diversas áreas de estudo reunidas sob o denominador comum de processamento digital de imagens, encontra-se a área conhecida como análise de imagens. Este campo de estudos visa ao desenvolvimento de técnicas que permitam extrair informações das imagens, possibilitando às pessoas e aos equipamentos maior poder de análise, resultando em maior suporte às decisões. Neste processo, uma etapa importante é a de segmentação que se refere à divisão da imagem em diversas partes e

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3

Yin, Ruiqing. "Steps towards end-to-end neural speaker diarization." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS261/document.

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La tâche de segmentation et de regroupement en locuteurs (speaker diarization) consiste à identifier "qui parle quand" dans un flux audio sans connaissance a priori du nombre de locuteurs ou de leur temps de parole respectifs. Les systèmes de segmentation et de regroupement en locuteurs sont généralement construits en combinant quatre étapes principales. Premièrement, les régions ne contenant pas de parole telles que les silences, la musique et le bruit sont supprimées par la détection d'activité vocale (VAD). Ensuite, les régions de parole sont divisées en segments homogènes en locuteur par d

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Fletcher, Mary H. "UK closed-end country funds : illiquidity, sentiment and segmentation." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25545.

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In this thesis we investigate the relation between UK closed-end country fund pricing and measures of illiquidity, sentiment and segmentation. First, we examine whether the UK closed-end country fund premium is related to the illiquidity of the UK fund or the illiquidity of the country in which the fund invests. We also consider whether emerging market country funds behave differently in terms of their premium and illiquidity to developed market country funds, and in particular whether they offer more stability during the period of the recent financial crisis. Overall, we find country illiquid

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Zaylaa, Amer. "Multichannel EHG segmentation for automatically identifying contractions and motion artifacts." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2521.

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Dans cette étude, nous avons mis l’accent sur la segmentation automatique des évènements dans le signal EMG utérin et l’identification ensuite des contractions parmi ces évènements en se référant aux données de l’expert. Notre base de données comprend des signaux EMG utérins de différentes semaines de gestation acquis grâce à une matrice de 4x4 électrodes. Par conséquent, notre travail a compris tout d’abord une application de la méthode de somme cumulé dynamique (DCS) en approche monodimensionnelle sur les signaux monopolaires afin d’obtenir une grande résolution spatiale des données. Suite a

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Löfhede, Johan. "The EEG of the neonatal brain : classification of background activity." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3533.

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The brain requires a continuous supply of oxygen and nutrients, and even a short period of reduced oxygen supply can cause severe and lifelong consequences for the affected individual. The unborn baby is fairly robust, but there are of course limits also for these individuals. The mostsensitive and most important organ is the brain. When the brain is deprivedof oxygen, a process can start that ultimately may lead to the death of braincells and irreparable brain damage. This process has two phases; one more orless immediate and one delayed. There is a window of time of up to 24 hourswhere actio

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Varejão, Andreão Rodrigo. "Segmentation de battements ECG par approche markovienne : application à la détection d'ischémies." Evry, Institut national des télécommunications, 2004. http://www.theses.fr/2004TELE0004.

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L'enregistrement ambulatoire continu de l'électrocardiogramme par la méthode de Holter (ECG ambulatoire) pourvoit des informations pour le dépistage de l'ischémie myocardique pour des patients atteints d'une maladie coronarienne. Dans ce contexte, nous proposons un système automatique d'analyse d'ECG ambulatoire basé sur la fusion d'une approche markovienne et d'une approche heuristique capable de détecter des épisodes ischémiques. L'approche markovienne permet d'extraire du signal ECG les informations nécessaires à l'analyse du décalage du segment ST. Notre approche est capable de prendre en

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8

Wigington, Curtis Michael. "End-to-End Full-Page Handwriting Recognition." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7099.

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Despite decades of research, offline handwriting recognition (HWR) of historical documents remains a challenging problem, which if solved could greatly improve the searchability of online cultural heritage archives. Historical documents are plagued with noise, degradation, ink bleed-through, overlapping strokes, variation in slope and slant of the writing, and inconsistent layouts. Often the documents in a collection have been written by thousands of authors, all of whom have significantly different writing styles. In order to better capture the variations in writing styles we introduce a nove

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Senger, Saesha. "Gender, Politics, Market Segmentation, and Taste: Adult Contemporary Radio at the End of the Twentieth Century." UKnowledge, 2019. https://uknowledge.uky.edu/music_etds/150.

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This dissertation explores issues of gender politics, market segmentation, and taste through an examination of the contributions of several artists who have achieved Adult Contemporary (AC) chart success. The scope of the project is limited to a period when many artists who figured prominently in both the broader mainstream of American popular music and the more specific Adult Contemporary category were most commercially viable: from the mid-1980s through the 1990s. My contention is that, as gender politics and gendered social norms continued to change in the United States at this time, Adult

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Bansal, Angela R. "PRICING OF CLOSED-END COUNTRY FUNDS: EFFECT OF INVESTOR SENTIMENT, MARKET SEGMENTATION AND LOCAL MARKET FACTORS." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin984591438.

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11

Wright, David. "The role of pax genes in vertebrate segmentation." Thesis, University of Dundee, 2010. https://discovery.dundee.ac.uk/en/studentTheses/15d5c38e-b000-4dcb-be35-49a46feb4664.

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Pax genes are involved in a range of processes in the developing embryo. Pax3 and Pax7 in particular are associated with the paraxial mesoderm, especially the development of the myogenic lineage. However, recent studies have suggested that Pax3 and Pax7 may have earlier, morphogenetic roles in the segementation of the paraxial mesoderm. Here we examine the expression of Pax3 and Pax7 in the chicken presomitic mesoderm, and investigate their function using an in ovo electroporation transfection technique. We find that Pax3/7 drives precocious differentiation of PSM towards the myogenic lineage,

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Xu, Libo. "GAN-based Automatic Segmentation of Thoracic Aorta from Non-contrast-Enhanced CT Images." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-295428.

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The deep learning-based automatic segmentation methods have developed rapidly in recent years to give a promising performance in the medical image segmentation tasks, which provide clinical medicine with an accurate and fast computer-aided diagnosis method. Generative adversarial networks and their extended frameworks have achieved encouraging results on image-to-image translation problems. In this report, the proposed hybrid network combined cycle-consistent adversarial networks, which transformed contrast-enhanced images from computed tomography angiography to the conventional low-contrast C

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Unakafov, Anton M. [Verfasser]. "Ordinal-patterns-based segmentation and discrimination of time series with applications to EEG data / Anton M. Unakafov." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2015. http://d-nb.info/1071509675/34.

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Al, Madi Naser S. "A STUDY OF LEARNING PERFORMANCE AND COGNITIVE ACTIVITY DURING MULTIMODAL COMPREHENSION USING SEGMENTATION-INTEGRATION MODEL AND EEG." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1416868268.

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15

Hodulíková, Tereza. "Analýza EEG během anestezie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-220369.

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This master's thesis deals with the method of functional examination of brain electric activity. In the first part is description of central nervous system, method of electroencephalography and possible connections. Furthermor the project involves characteristic of EEG signal and its artifacts. It also includes signal processing and list of symptoms, which will be used for an analysis of the EEG during anesthesia. The second part of thesis involves development of application, which allow viewing and proccesing of EEG signal. In conclusion of thesis is carried out unequal segmentation and stati

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Purwani, Sri. "Ensemble registration : combining groupwise registration and segmentation." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/ensemble-registration-combining-groupwise-registration-and-segmentation(5f3c06b4-4909-492b-bbc9-a0fecb77d216).html.

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Registration of a group of images generally only gives a pointwise, dense correspondence defined over the whole image plane or volume, without having any specific description of any common structure that exists in every image. Furthermore, identifying tissue classes and structures that are significant across the group is often required for analysis, as well as the correspondence. The overall aim is instead to perform registration, segmentation, and modelling simultaneously, so that the registration can assist the segmentation, and vice versa. However, structural information does play a role in

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Sun, Q. "Strategic market planning in China : a means-end chain approach to market segmentation within the Beijin mobile phone market." Thesis, University of Salford, 2007. http://usir.salford.ac.uk/14902/.

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With a dramatic economic growth rate of 10% per year, China, as one of the Big Emerging Markets, has drawn increasing attention from both academia and industry. Its market potential and growth rate is believed to be the top attraction for global investment. In many sectors, the increasing number of options available to consumers has led to the emergence of a consumer society in China and has further fed the development of variance in consumer behaviour. This has imposed imperatives of consumer research in China, especially market segmentation research, on both foreign multinational companies a

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Jonsson, Ragnar. "Studies on the competitiveness of wood : - market segmentation and customer need assessments." Doctoral thesis, Växjö universitet, Institutionen för teknik och design, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-398.

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Over the last decades, wood has encountered increasing competition from other building materials. Hence, it is relevant to study the underlying factors of material substitution. The market for repair and remodelling (R&R) is growing in importance. The end-consumer´s, or the household?s, assessments as to material selection are generally more crucial in R&R than in construction of new houses, a circumstance highlighting the importance of the end-consumer. Consequently, this thesis deals with material substitution within an end-consumer context. Proper market segmentation and targeting p

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Buda, Bajić Papuga. "Methods for image restoration and segmentation by sparsity promoting energy minimization." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110640&source=NDLTD&language=en.

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Energy minimization approach is widely used in image processing applications.Many image processing problems can be modelled in a form of a minimizationproblem. This thesis deals with two crucial tasks of image analysis workflows:image restoration and segmentation of images corrupted by blur and noise. Bothimage restoration and segmentation are modelled as energy minimizationproblems, where energy function is composed of two parts: data fidelity term andregularization term. The main contribution of this thesis is development of newdata fidelity and regularization terms for both image restoratio

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Shone, Victoria Louise. "Development, morphogenesis and evolution of pharyngeal segmentation in vertebrates." Thesis, King's College London (University of London), 2014. https://kclpure.kcl.ac.uk/portal/en/theses/development-morphogenesis-and-evolution-of-pharyngeal-segmentation-in-vertebrates(702414ad-be81-457a-8f2f-ca7dffb46280).html.

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Pharyngeal arches are bulges found on the lateral surface of the head of vertebrate embryos. They are lined externally by ectoderm and internally by endoderm, with a mesenchymal core of neural crest cells and mesoderm. Lateral expansion of pockets of endoderm form pharyngeal pouches at specific locations along the pharynx. Each one of these aligns with invaginating portions of overlying ectoderm to form the anterior and posterior border of each pharyngeal arch. Current studies suggest endoderm plays a prominent role in patterning the arches, but little is known about how this tissue develops a

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Zobačová, Barbora. "Segmentace signálů EKG na základě jejich kvality." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377765.

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This semestral thesis deals with methods for continuous estimation of the quality of the ECG signal. The theoretical part includes the functional anatomy of the heart, the basics of electrocardiography, the types of noise that can be found in the ECG records, and a description of several methods for the continuous estimation of the ECG signal quality. Next here are some approaches to segmenting ECG signals based on their quality. The practical part deals with the implementation of two methods. The first method is the SNR estimation method based on the Wiener filter. The second method is the me

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Opravilová, Kamila. "Segmentace signálu EKG na základě kvality odhadnuté z akcelerometrických dat a komprese kvalitních segmentů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400966.

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This diploma thesis is devoted to segmentation of ECG signal based on its quality and compression of quality segments suitable for diagnostics (in telemedicine). A completely new approach is to use accelerometer data to estimate ECG signal quality. This is possible thanks to the Bittium Faros mobile recorder. It records both the ECG signal motion – accelerometric data. A total of 34 features were extracted from accelerometric data. Using these features the predictive model was taught to classify the ECG signal into 3 quality groups according to the level of noise. Quality segments were compres

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Jiu, Mingyuan. "Spatial information and end-to-end learning for visual recognition." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0038/document.

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Dans cette thèse nous étudions les algorithmes d'apprentissage automatique pour la reconnaissance visuelle. Un accent particulier est mis sur l'apprentissage automatique de représentations, c.à.d. l'apprentissage automatique d'extracteurs de caractéristiques; nous insistons également sur l'apprentissage conjoint de ces dernières avec le modèle de prédiction des problèmes traités, tels que la reconnaissance d'objets, la reconnaissance d'activités humaines, ou la segmentation d'objets. Dans ce contexte, nous proposons plusieurs contributions : Une première contribution concerne les modèles de ty

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Wiedermann, Guy. "Investigating the relationship between clock gene stability and the pace of the vertebrate segmentation clock." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/0ed986bc-acb2-42f4-bc15-4bcbcf5e1053.

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Somites are precursors of the vertebrae, ribs, and associated musculature and their formation relies on ordered and timely segmentation during early embryonic development. Somites form as they ‘pinch’ away from the pre-somitic mesoderm (PSM) with a species-specific periodicity, coinciding with waves of cycling mRNA expression of ‘clock’ genes sweeping across the PSM that are regulated by a molecular oscillator. Mathematical models suggest that sustained rapid oscillations of Notch-regulated gene transcription in the PSM depend on transient negative feedback loops that rely on unstable protein

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Bone, Robert. "Investigating the regulation of the Notch pathway ligand Delta-like 1 in the vertebrate segmentation clock." Thesis, University of Dundee, 2012. https://discovery.dundee.ac.uk/en/studentTheses/fe5a1f23-f79b-491c-8e9b-326f260c30ca.

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Cointepas, Yann. "Modélisation homotopique et segmentation 3D du cortex cérébral à partir d'IRM pour la résolution des problèmes directs et inverses en EEG et en MEG." Phd thesis, Télécom ParisTech, 1999. http://tel.archives-ouvertes.fr/tel-00005652.

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Ce travail a pour but de proposer une méthode de modélisation et de segmentation du cortex en IRM qui soit adaptée aux utilisations en électroencéphalographie (EEG) et en magnétoencéphalographie (MEG). La complexité du cortex a nécéssité le développement de modèles mathématiques spécifiques. Les contributions de la thèse se situent donc à deux niveaux : au niveau théorique avec le développement d'un modèle discret à la fois volumique et surfacique reposant sur les complexes cellulaires, l'étude de ses propriétés, et le développement d'une méthodologie de segmentation prenant en compte ses cara

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Cointepas, Yann. "Modélisation homotopique et segmentation tridimensionnelles du cortex cérébral à partir d'IRM pour la résolution des problèmes directs et inverses en EEG et en MEG /." Paris : École nationale supérieure des télécommunications, 2000. http://catalogue.bnf.fr/ark:/12148/cb371010253.

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Cuintepas, Yann. "Modélisation homotopique et segmentation tridimensionnelles du cortex cérébral à partir d'irm pour la résolution des problèmes directs et inverses en eeg et en meg." Paris, ENST, 1999. http://www.theses.fr/1999ENST0025.

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L'objectif de cette thèse est de fournir une contribution aux études anatomiques et fonctionnelles du cerveau en proposant une méthode de modélisation et de segmentation du cortex en IRM qui soit adaptée aux utilisations en électroencéphalographie (EEG) et en magnétoencéphalographie (Meg). Dans la première partie de ce travail, nous abordons rapidement les différentes modalités d'imagerie fonctionnelle cérébrale et montrons l'importance que revêt la modélisation de l'anatomie corticale pour l'analyse des données fonctionnelles, en particulier pour la Meg et l’EEG. Ensuite, nous faisons le poin

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Taylor, Michael James. "Adaptive methodologies for real-time skin segmentation and large-scale face detection." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/adaptive-methodologies-for-realtime-skin-segmentation-and-largescale-face-detection(d20438dc-7b0a-4743-a6f6-76a59c87d741).html.

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In the field of computer vision, face detection concerns the positive identification of the faces of people within still images or video streams, which is extremely useful for applications such as counting, tracking, and recognition. When applied in large-scale environments, such as lecture theatres, we have found that existing technology can struggle greatly in detecting faces due primarily to the indiscernibility of their features, caused by partial occlusion, problematic orientation, and a lack of focus or resolution. We attempt to overcome this issue by proposing an adaptive framework, cap

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Lin, Chao. "P and T wave analysis in ECG signals using Bayesian methods." Phd thesis, Toulouse, INPT, 2012. http://oatao.univ-toulouse.fr/8990/1/lin.pdf.

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This thesis studies Bayesian estimation/detection algorithms for P and T wave analysis in ECG signals. In this work, different statistical models and associated Bayesian methods are proposed to solve simultaneously the P and T wave delineation task (determination of the positions of the peaks and boundaries of the individual waves) and the waveform-estimation problem. These models take into account appropriate prior distributions for the unknown parameters (wave locations and amplitudes, and waveform coefficients). These prior distributions are combined with the likelihood of the observed data

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Ahi, Sercan Taha. "Solving The Forward Problem Of Electrical Source Imaging By Applying The Reciprocal Approach And The Finite Difference Method." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608717/index.pdf.

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One of the goals of Electroencephalography (EEG) is to correctly localize brain activities by the help of voltage measurements taken on scalp. However, due to computational difficulties of the problem and technological limitations, the accuracy level of the activity localization is not perfect and should be improved. To increase accuracy level of the solution, realistic, i.e. patient dependent, head models should be created. Such head models are created via assigning realistic conductivity values of head tissues onto realistic tissue positions. This study initially focuses on obtaining patien

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Wolters, Carsten H. "Influence of Tissue Conductivity Inhomogeneity and Anisotropy on EEG/MEG based Source Localization in the Human Brain." Doctoral thesis, Universitätsbibliothek Leipzig, 2004. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-37549.

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The inverse problem in Electro- and Magneto-EncephaloGraphy (EEG/MEG) aims at reconstructing the underlying current distribution in the human brain using potential differences and/or magnetic fluxes that are measured non-invasively directly, or at a close distance, from the head surface. The solution requires repeated computation of the forward problem, i.e., the simulation of EEG and MEG fields for a given dipolar source in the brain using a volume-conduction model of the head. The associated differential equations are derived from the Maxwell equations. Not only do various head tissues exhib

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Mohammad, Suraya. "Textural measurements for retinal image analysis." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/textural-measurements-for-retinal-image-analysis(4efe6635-edec-4e8e-89a4-d119da3cf7cd).html.

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This thesis present research work conducted in the field of retina image analysis. More specifically, the work is directed at the application of texture analysis technique for the segmentation of common retinal landmark and for retina image classification. The main challenge in this research is in identifying the suitable texture measurement for retina images. In this research we proposed the used of texture measurement based on Binary Robust Independent Elementary Features (BRIEF). BRIEF measure texture by performing an intensity comparison in a local image patch, thus it is very fast to comp

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Lindner, Claudia. "Statistical shape analysis of the proximal femur : development of a fully automatic segmentation system and its applications." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/statistical-shape-analysis-of-the-proximal-femur-development-of-a-fully-automatic-segmentation-system-and-its-applications(b36076bd-32da-4b00-9518-d05060aaa594).html.

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Osteoarthritis (OA) is the most common form of human joint disease causing significant pain and disability. Current treatment for hip OA is limited to pain management and joint replacement for end-stage disease. The development of methods for early diagnosis and new treatment options are urgently needed to minimise the impact of the disease. Studies of hip OA have shown that hip joint morphology correlates with susceptibility to hip OA and disease progression. Bone shape analyses play an important role in disease diagnosis, pre-operative planning, and treatment analysis as well as in epidemiol

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Beasley, William. "Optimising adaptive radiotherapy for head and neck cancer." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/optimising-adaptive-radiotherapy-for-head-and-neck-cancer(96e831b0-751a-454d-8a6d-4dd490b6a88f).html.

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Anatomic changes occur throughout head and neck radiotherapy, and a new treatment plan is often required to mitigate the resulting changes in delivered dose to key structures. This process is known as adaptive radiotherapy (ART), and can be labour-intensive. The aim of this thesis is to optimise ART, addressing some of the technical and clinical challenges facing its routine clinical implementation. Optimising the frequency and timing of adaptive replanning is important, and it has been shown here that intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) are equa

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Dekel, Ofer. "Anti-essentialist marketing : an alternative view of consumers' 'identity'." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/antiessentialist-marketingan-alternative-view-of-consumers-identity(2ab47e24-4af1-4950-a730-2bea89be02e7).html.

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One problem with the traditional marketing segmentation view of consumer markets is that it treats social categories as an ontology, which somehow becomes independent of its own members. It assumes that the self is required to adjust to its segment. In my research, I follow writers such as Hall (1996) who claim that consumer identity is not a reflection of a fixed, natural, state of being but a process of becoming. The meaning of social economic class, Britishness, religion, masculinity and so forth, are subject to continual change. Identity then becomes a ‘cut’ or a snapshot of unfolding mean

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Pellegrini, Enrico. "Morphometric measurements of the retinal vasculature in ultra-wide scanning laser ophthalmoscopy as biomarkers for cardiovascular disease." Thesis, University of Dundee, 2016. https://discovery.dundee.ac.uk/en/studentTheses/91c65794-cf55-404a-8196-2d92c7479bb9.

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Retinal imaging enables the visualization of a portion of the human microvasculature in-vivo and non-invasively. The scanning laser ophthalmoscope (SLO), provides images characterized by an ultra-wide field of view (UWFoV) covering approximately 180-200º in a single scan, minimizing the discomfort for the subject. The microvasculature visible in retinal images and its changes have been vastly investigated as candidate biomarkers for different types of systemic conditions like cardiovascular disease (CVD), which currently remains the main cause of death in Europe. For the CARMEN study, UWFoV SL

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Kubát, Milan. "Borcení časové osy v oblasti biosignálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220845.

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This work is dedicated to dynamic time warping in biosignal processing, especially it´s application for ECG signals. On the beginning the theoretical notes about cardiography are summarized. Then, the DTW analysis follows along with conditions and demands assessments for it’s successful application. Next, several variants and application possibilities are described. The practical part covers the design of this method, the outputs comprehension, settings optimization and realization of methods related with DTW

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Jaritz, Maximilian. "2D-3D scene understanding for autonomous driving." Thesis, Université Paris sciences et lettres, 2020. https://pastel.archives-ouvertes.fr/tel-02921424.

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Dans cette thèse, nous abordons les défis de la rareté des annotations et la fusion de données hétérogènes tels que les nuages de points 3D et images 2D. D’abord, nous adoptons une stratégie de conduite de bout en bout où un réseau de neurones est entraîné pour directement traduire l'entrée capteur (image caméra) en contrôles-commandes, ce qui rend cette approche indépendante des annotations dans le domaine visuel. Nous utilisons l’apprentissage par renforcement profond où l'algorithme apprend de la récompense, obtenue par interaction avec un simulateur réaliste. Nous proposons de nouvelles st

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Vladimir, Tadić. "Fazifikacija Gaborovog filtra i njena primena u detekciji registarskih tablica." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107171&source=NDLTD&language=en.

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Disertacija prikazuje novi algoritam za detekciju i izdvajanje registarskih tablica iz slike vozila koristeći fazi 2D Gaborov filtar. Parametri filtra: orijentacija i talasna dužina su fazifikovani u cilju optimizacije odziva Gaborovog filtra i postizanja dodatne selektivnosti filtra. Prethodno navedeni parametri dominiraju u rezultatu filtriranja. Bellova i trougaona funkcija pripadnosti pokazale su se kao najbolji izbor pri fazifikaciji parametara filtra. Algoritam je evaluiran nad vi&scaron;e baza slika i postignuti su zadovoljavajući rezultati. Komponente od interesa su efikasno izdvojene

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Luo, Cheng. "Demographic-related purchase behaviours of consumers : the evolving tension between exploration and exploitation in frequently purchased consumer goods markets." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/demographicrelated-purchase-behaviours-of-consumers-the-evolving-tension-between-exploration-and-exploitation-in-frequently-purchased-consumer-goods-markets(2b573170-322d-441f-987e-29d71c633b45).html.

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Consumers make trade-offs in their purchase decision making between extending market knowledge from exploring a product market and maximizing purchase value based on exploiting their current knowledge. The value of these strategies can be enhanced opportunistically by taking advantage of promotions. In this research, a new and unique datamining model was developed to process store scanner data for quantifying the brand selection behaviour of an individual consumer in reaction to promotions. Selected consumers in each of Pittsfield’s salty snack, yogurt, and toilet tissue markets were then segm

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Mario, Šokac. "Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=NDLTD&language=en.

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Kompjuterizovana tomografija (CT) je u poslednje vreme ušla na velika vrata sa razvojem industrijskih CT sistema, usled njene primene u različitim oblastima, a uveliko ulazi i u polje koodinatne metrologije. Zbog karakterizacije objekata sačinjenih od različitih materijala (najčešće metala i plastike), javljaju se određeni problem u vidu nastanka artefakata kod rezultata dimenzionalnih merenja. Istraživanja koja su sprovedena u ovoj doktorskoj disertaciji se bave problemom redukcije uticaja tih artefakata i segmentacije 2D snimaka. Razvijen je novi model koji je baziran na primeni hibridne met

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Temple-Boyer, Elise. "Aménagement et ménagement du paysage dans la Dorsale Tunisienne : Évolution, représentation et gestion de la conservation des eaux et des sols à l'échelle de trois petits bassins-versants." Phd thesis, Lyon, Ecole normale supérieure, 2006. http://tel.archives-ouvertes.fr/tel-00174543/en/.

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Au cœur de la Tunisie, la Dorsale Tunisienne se présente comme une succession d'alignements montagneux remarquables, des jbels, qui s'étend du Cap Bon jusqu'à la frontière algérienne. Le problème qui se pose dans la Dorsale vient de la gravité que revêt l'érosion, ne ménageant pas les paysages de celle-ci, actuellement très dégradés. Il s'accompagne d'une politique d'aménagement de conservation des eaux et des sols mise en place par les services publics particulièrement exemplaire dans cette région, tant par la diversité des interventions, que par leur ampleur.<br />L'intérêt n'est pas d'étudi

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Palata, Petr. "Prototypování fotografické kompozice pomocí rozšířené reality." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264952.

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The goal of this work was to create an application providing the user with an option of creating interesting and realistic looking montages in few easy steps using a mobile phone. The focus is on simplicity, user friendliness and the speed with which the final montage can be obtained. The work discusses available approaches to building such application, the algorithms needed and also the problems with the implementation of computer vision algo- rithms on a mobile device. It also discusses possible options for speeding up the algorithms through parallelization on newer devices running the iOS o

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Goudie, Duncan. "Discriminative hand-object pose estimation from depth images using convolutional neural networks." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/discriminative-handobject-pose-estimation-from-depth-images-using-convolutional-neural-networks(f677870a-779f-460a-948d-10fc045e094c).html.

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This thesis investigates the task of estimating the pose of a hand interacting with an object from a depth image. The main contribution of this thesis is the development of our discriminative one-shot hand-object pose estimation system. To the best of our knowledge, this is the first attempt at a one-shot hand-object pose estimation system. It is a two stage system consisting of convolutional neural networks. The first stage segments the object out of the hand from the depth image. This hand-minus-object depth image is combined with the original input depth image to form a 2-channel image for

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Outal, Souhaïl. "Quantification par analyse d'images de la granulométrie des roches fragmentées : amélioration de l'extraction morphologique des surfaces, amélioration de la reconstruction stéréologique." Phd thesis, École Nationale Supérieure des Mines de Paris, 2006. http://pastel.archives-ouvertes.fr/pastel-00002394/en/.

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Cette recherche s'inscrit dans le cadre général du contrôle de qualité des processus utilisés en production minière, tels que le tir à l'explosif, le broyage et le concassage. Elle s'intéresse plus particulièrement à la quantification par traitement d'images de la granulométrie des roches fragmentées. Globalement, les développements menés portent sur l'amélioration des deux étapes les plus déterminantes de la mesure : l'extraction des contours des fragments de roches dans l'image (2D) et la reconstruction de la courbe granulométrique en volume (étape de stéréologie, 3D). Actuellement, le tamis

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Ljubo, Nedović. "Neki tipovi rastojanja i fazi mera sa primenom u obradi slika." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104792&source=NDLTD&language=en.

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Doktorska disertacija izučava primenu fazi operacija, prvenstveno agregacionih operatora na funkcije rastojanja i metrike. Originalan doprinos teze je u konstrukciji novih funkcija rastojanja i metrika primenom agregacionih operatora na neke polazne funkcije rastojanja i metrike. Za neke tipove agregacionih operatora i polaznih funkcija rastojanja i metrika su ispitane osobine ovako konstruisanih funkcija rastojanja i metrika. Za neke od njih su ispitane performanse pri primeni u segmentaciji slike &bdquo;Fuzzy c-means“ algoritmom.<br>This thesis studies application of fuzzy operations,

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Marija, Delić. "Modeli neodređenosti u obradi digitalnih slika." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114273&source=NDLTD&language=en.

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Problemi klasifikacije i segmentacije digitalnih slika su veomaaktuelni i zastupljeni u praksi. Potreba za modelima koji razmatrajuovu problematiku u poslednjih nekoliko decenija ubrzanim tempompoprima sve veći značaj i obim u svakodnevnom životu. Koriste se uračunarskoj grafici, prepoznavanju oblika, medicinskoj analizi slika,saobraćaju, analizi dokumenata, pokreta i izraza lica i sl.U okviru ove disertacije, predstavljeno istraživanje motivisano jeprimenama razvijenih modela u klasifikaciji i segmentacijidigitalnih slika. Istraživanje obuhvata dva segmenta. Ovi segmentipovezani su terminom n

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Narasimha, Rajesh. "Application of Information Theory and Learning to Network and Biological Tomography." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19889.

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Studying the internal characteristics of a network using measurements obtained from endhosts is known as network tomography. The foremost challenge in measurement-based approaches is the large size of a network, where only a subset of measurements can be obtained because of the inaccessibility of the entire network. As the network becomes larger, a question arises as to how rapidly the monitoring resources (number of measurements or number of samples) must grow to obtain a desired monitoring accuracy. Our work studies the scalability of the measurements with respect to the size of the network.

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Ozakturk, Meliksah. "Power electronic systems design co-ordination for doubly-fed induction generator wind turbines." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/power-electronic-systems-design-coordination-for-doublyfed-induction-generator-wind-turbines(ebe4de00-07ad-4b06-8b8d-79be291804e7).html.

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Wind turbine modelling using doubly-fed induction generators is a well-known subject. However, studies have tended to focus on optimising the components of the system rather than considering the interaction between the components. This research examines the interaction of the control methods for a doubly-fed induction generator (DFIG) in a wind turbine application integrating them with the crowbar protection control and DC-link brake control to make the best use of the converter. The controls of the rotor-side and the grid-side converters of the DFIG model are both well established and have be

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