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Relevant bibliographies by topics / Pore segmentation / Dissertations / Theses

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Dissertations / Theses on the topic 'Pore segmentation'

Author: Grafiati

Published: 7 September 2024

Last updated: 19 July 2025

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1

Ding, Nan. "3D Modeling of the Lamina Cribrosa in OCT Data." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS148.

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La lame criblée (LC), située dans la tête du nerf optique, joue un rôle crucial dans le diagnostic et l'étude du glaucome, la deuxième cause de cécité. Il s'agit d'un maillage collagénique 3D formé de pores, par lesquels les fibres nerveuses passent pour atteindre le cerveau. L'observation 3D in vivo des pores de la LC est désormais possible grâce aux progrès de l'imagerie de tomographie de cohérence optique (OCT). Dans cette étude, nous visons à réaliser automatiquement la reconstruction 3D des pores à partir de volumes OCT, afin d'étudier le remodelage de la LC au cours du glaucome. La résol

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2

Wagh, Ameya Yatindra. "A Deep 3D Object Pose Estimation Framework for Robots with RGB-D Sensors." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-theses/1287.

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The task of object detection and pose estimation has widely been done using template matching techniques. However, these algorithms are sensitive to outliers and occlusions, and have high latency due to their iterative nature. Recent research in computer vision and deep learning has shown great improvements in the robustness of these algorithms. However, one of the major drawbacks of these algorithms is that they are specific to the objects. Moreover, the estimation of pose depends significantly on their RGB image features. As these algorithms are trained on meticulously labeled la

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3

Seguin, Guillaume. "Analyse des personnes dans les films stéréoscopiques." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEE021/document.

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Les humains sont au coeur de nombreux problèmes de vision par ordinateur, tels que les systèmes de surveillance ou les voitures sans pilote. Ils sont également au centre de la plupart des contenus visuels, pouvant amener à des jeux de données très larges pour l’entraînement de modèles et d’algorithmes. Par ailleurs, si les données stéréoscopiques font l’objet d’études depuis longtemps, ce n’est que récemment que les films 3D sont devenus un succès commercial. Dans cette thèse, nous étudions comment exploiter les données additionnelles issues des films 3D pour les tâches d’analyse des personnes

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4

Madadi, Meysam. "Human segmentation, pose estimation and applications." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/457900.

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El análisis automático de seres humanos en fotografías o videos tiene grandes aplicaciones dentro de la visión por computador, incluyendo diagnóstico médico, deportes, entretenimiento, edición de películas y vigilancia, por nombrar sólo algunos. El cuerpo, la cara y la mano son los componentes más estudiados de los seres humanos. El cuerpo tiene muchas variabilidades en la forma y la ropa junto con altos grados de libertad en pose. La cara está compuesta por multitud de músculos, causando muchas deformaciones visibles, diferentes formas, y variabilidad en cabello. La mano es un objeto pequeño,

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5

Chen, Daniel Chien Yu. "Image segmentation and pose estimation of humans in video." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/66230/1/Daniel_Chen_Thesis.pdf.

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This thesis introduces improved techniques towards automatically estimating the pose of humans from video. It examines a complete workflow to estimating pose, from the segmentation of the raw video stream to extract silhouettes, to using the silhouettes in order to determine the relative orientation of parts of the human body. The proposed segmentation algorithms have improved performance and reduced complexity, while the pose estimation shows superior accuracy during difficult cases of self occlusion.

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6

Sandhu, Romeil Singh. "Statistical methods for 2D image segmentation and 3D pose estimation." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37245.

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The field of computer vision focuses on the goal of developing techniques to exploit and extract information from underlying data that may represent images or other multidimensional data. In particular, two well-studied problems in computer vision are the fundamental tasks of 2D image segmentation and 3D pose estimation from a 2D scene. In this thesis, we first introduce two novel methodologies that attempt to independently solve 2D image segmentation and 3D pose estimation separately. Then, by leveraging the advantages of certain techniques from each problem, we couple both tasks in a variat

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7

DELERUE, JEAN FRANCOIS. "Segmentation 3d, application a l'extraction de reseaux de pores et a la caracterisation hydrodynamique des sols." Paris 11, 2001. http://www.theses.fr/2001PA112141.

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Le sol et les materiaux poreux en general, peuvent etre vus comme l'union de deux parties : la partie solide, constituee de differents materiaux (argile, roche etc. ) et la partie vide (espace poral) par ou peuvent s'ecouler des fluides. Une connaissance precise de la structure 3d de la partie vide devrait permettre une meilleure comprehension des phenomenes d'ecoulement, voire meme une prevision des proprietes hydriques de ces materiaux. Les recents progres dans les domaines de l'acquisition d'image rendent de plus en plus abordable l'obtention d'images volumiques de sol, notamment grace a la

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8

Hewa, Thondilege Akila Sachinthani Pemasiri. "Multimodal Image Correspondence." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235433/1/Akila%2BHewa%2BThondilege%2BThesis%281%29.pdf.

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Multimodal images are used across many application areas including medical and surveillance. Due to the different characteristics of different imaging modalities, developing image processing algorithms for multimodal images is challenging. This thesis proposes effective solutions for the challenging problem of multimodal semantic correspondence where the connections between similar components across images from different modalities are established. The proposed methods which are based on deep learning techniques have been applied for several applications including epilepsy type classification

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9

Calzavara, Ivan. "Human pose augmentation for facilitating Violence Detection in videos: a combination of the deep learning methods DensePose and VioNetHuman pose augmentation for facilitating Violence Detection in videos: a combination of the deep learning methods DensePose and VioNet." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40842.

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In recent years, deep learning, a critical technology in computer vision, has achieved remarkable milestones in many fields, such as image classification and object detection. In particular, it has also been introduced to address the problem of violence detection, which is a big challenge considering the complexity to establish an exact definition for the phenomenon of violence. Thanks to the ever increasing development of new technologies for surveillance, we have nowadays access to an enormous database of videos that can be analyzed to find any abnormal behavior. However, by dealing with suc

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Karabagli, Bilal. "Vérification automatique des montages d'usinage par vision : application à la sécurisation de l'usinage." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2013. http://tel.archives-ouvertes.fr/tel-01018079.

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Le terme "usinage à porte fermée", fréquemment employé par les PME de l'aéronautique et de l'automobile, désigne l'automatisation sécurisée du processus d'usinage des pièces mécaniques. Dans le cadre de notre travail, nous nous focalisons sur la vérification du montage d'usinage, avant de lancer la phase d'usinage proprement dite. Nous proposons une solution sans contact, basée sur la vision monoculaire (une caméra), permettant de reconnaitre automatiquement les éléments du montage (brut à usiner, pions de positionnement, tiges de fixation,etc.), de vérifier que leur implantation réelle (réali

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11

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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12

Lee, Jehoon. "Statistical and geometric methods for visual tracking with occlusion handling and target reacquisition." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43582.

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Computer vision is the science that studies how machines understand scenes and automatically make decisions based on meaningful information extracted from an image or multi-dimensional data of the scene, like human vision. One common and well-studied field of computer vision is visual tracking. It is challenging and active research area in the computer vision community. Visual tracking is the task of continuously estimating the pose of an object of interest from the background in consecutive frames of an image sequence. It is a ubiquitous task and a fundamental technology of computer vision th

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13

Kong, Longbo. "Accurate Joint Detection from Depth Videos towards Pose Analysis." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157524/.

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Joint detection is vital for characterizing human pose and serves as a foundation for a wide range of computer vision applications such as physical training, health care, entertainment. This dissertation proposed two methods to detect joints in the human body for pose analysis. The first method detects joints by combining body model and automatic feature points detection together. The human body model maps the detected extreme points to the corresponding body parts of the model and detects the position of implicit joints. The dominant joints are detected after implicit joints and extreme point

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14

Aziz, Kheir Eddine. "Suivi multi-caméras de personnes dans un environnement contraint." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4093.

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La consommation est considérée comme étant l'une des formes simples de la vie quotidienne. L'évolution de la société moderne a entraîné un environnement fortement chargé d'objets, de signes et d'interactions fondées sur des transactions commerciales. À ce phénomène s'ajoutent l'accélération du renouvellement de l'offre disponible et le pouvoir d'achat qui devient une préoccupation grandissante pour la majorité des consommateurs et oú l'inflation des prix est un sujet récurrent. Compte tenu de cette complexité et de ces enjeux économiques aussi consé- quents, la nécessité de modéliser le compor

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15

Blanc, Beyne Thibault. "Estimation de posture 3D à partir de données imprécises et incomplètes : application à l'analyse d'activité d'opérateurs humains dans un centre de tri." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0106.

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Dans un contexte d’étude de la pénibilité et de l’ergonomie au travail pour la prévention des troubles musculo-squelettiques, la société Ebhys cherche à développer un outil d’analyse de l’activité des opérateurs humains dans un centre de tri, par l’évaluation d’indicateurs ergonomiques. Pour faire face à l’environnement non contrôlé du centre de tri et pour faciliter l’acceptabilité du dispositif, ces indicateurs sont mesurés à partir d’images de profondeur. Une étude ergonomique nous permet de définir les indicateurs à mesurer. Ces indicateurs sont les zones d’évolution des mains de l’opérate

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16

Cabras, Paolo. "3D Pose estimation of continuously deformable instruments in robotic endoscopic surgery." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAD007/document.

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Connaître la position 3D d’instruments robotisés peut être très utile dans le contexte chirurgical. Nous proposons deux méthodes automatiques pour déduire la pose 3D d’un instrument avec une unique section pliable et équipé avec des marqueurs colorés, en utilisant uniquement les images fournies par la caméra monoculaire incorporée dans l'endoscope. Une méthode basée sur les graphes permet segmenter les marqueurs et leurs coins apparents sont extraits en détectant la transition de couleur le long des courbes de Bézier qui modélisent les points du bord. Ces primitives sont utilisées pour estimer

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17

Usher, Kane. "Visual homing for a car-like vehicle." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16309/1/Kane_Usher_Thesis.pdf.

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This thesis addresses the pose stabilization of a car-like vehicle using omnidirectional visual feedback. The presented method allows a vehicle to servo to a pre-learnt target pose based on feature bearing angle and range discrepancies between the vehicle's current view of the environment and that seen at the learnt location. The best example of such a task is the use of visual feedback for autonomous parallel-parking of an automobile. Much of the existing work in pose stabilization is highly theoretical in nature with few examples of implementations on 'real' vehicles, let alone vehicles r

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Usher, Kane. "Visual homing for a car-like vehicle." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16309/.

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This thesis addresses the pose stabilization of a car-like vehicle using omnidirectional visual feedback. The presented method allows a vehicle to servo to a pre-learnt target pose based on feature bearing angle and range discrepancies between the vehicle's current view of the environment and that seen at the learnt location. The best example of such a task is the use of visual feedback for autonomous parallel-parking of an automobile. Much of the existing work in pose stabilization is highly theoretical in nature with few examples of implementations on 'real' vehicles, let alone vehicles r

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19

Simó, Serra Edgar. "Understanding human-centric images : from geometry to fashion." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/327030.

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Understanding humans from photographs has always been a fundamental goal of computer vision. Early works focused on simple tasks such as detecting the location of individuals by means of bounding boxes. As the field progressed, harder and more higher level tasks have been undertaken. For example, from human detection came the 2D and 3D human pose estimation in which the task consisted of identifying the location in the image or space of all different body parts, e.g., head, torso, knees, arms, etc. Human attributes also became a great source of interest as they allow recognizing individuals an

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20

Ting, Chen-Kang, and 丁介棡. "Market Segmentation and Service Satisfaction of Electronic Commerce for Port of Kaohsiung." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/01424498989465839392.

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碩士<br>國立成功大學<br>交通管理學系<br>89<br>This study seeks to examine the market segmentation and service satisfaction of electronic commerce for Port of Kaohsiung. Firstly, the important and satisfaction levels of service attributes and selection criteria of electronic commerce were conducted. Further, five factors were extracted from service attributes based on a factor analysis. These were defined as: harbor service, enquiry service, communication and support service, port information service as well as information service. In addition, five factors of selection criteria included content factor, faci

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Kuo, Hung-chin, and 郭宏志. "Feature Detection in Random Scan Data Using Pole Method for Segmentation in Reverse Engineering." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/21722477390367189164.

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碩士<br>國立中正大學<br>機械工程所<br>95<br>For manipulating the scanning database, it is usually transform to STL in the reverse engineering. The NURBS surface is still the major way to cope with scanning data in the conventional industry and the results have to be processed further, for instance, fetching the curve artificially to establish NURBS surface. However, it needs more cost and human power and the different experiences on it might cause different results. In this study, we try to establish a preprocess of NURBS surface -- Segmentation to reduce the error of conventional way due to the different

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22

Xu, Changhai 1977. "Steps towards the object semantic hierarchy." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-3797.

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An intelligent robot must be able to perceive and reason robustly about its world in terms of objects, among other foundational concepts. The robot can draw on rich data for object perception from continuous sensory input, in contrast to the usual formulation that focuses on objects in isolated still images. Additionally, the robot needs multiple object representations to deal with different tasks and/or different classes of objects. We propose the Object Semantic Hierarchy (OSH), which consists of multiple representations with different ontologies. The OSH factors the problems of object p

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23

GARRO, Valeria. "Image localization and parsing using 3D structure." Doctoral thesis, 2013. http://hdl.handle.net/11562/533354.

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L'obiettivo di questa tesi è lo studio di due problematiche fondamentali della visione computazionale: la localizzazione direttamente da immagini e la segmentazione semantica di un'immagine. Il primo contributo di questa tesi è lo sviluppo di un sistema che calcola un'accurata e rapida localizzazione di una fotocamera portatile, utilizzando oltre ad un dataset di immagini pre-registrate, dati tridimensionali ottenuti da una ricostruzione mediante un algoritmo di "Structure from Motion". L'informazione 3D viene considerata sotto due differenti aspetti: in primo luogo essa è direttamente coin

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Schoeler, Markus. "Visual Perception of Objects and their Parts in Artificial Systems." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0023-9669-A.

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Patrão, Bruno André Santos. "Biblioteca para Desenvolvimento de Aplicações de Realidade Aumentada Baseada em Marcadores Binários." Master's thesis, 2011. http://hdl.handle.net/10316/99649.

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Dissertação de Mestrado em Engenharia Electrotécnica e de Computadores, Tecnologias de Informação Visuail, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>O presente trabalho explora a área da Realidade Aumentada e foca-se na integração de objectos virtuais em ambientes reais em tempo real. O objectivo geral é desenvolver uma biblioteca compreensiva e de fácil utilização para integrar no OpenAR e possibilitar a criação de aplicações de Realidade Aumentada. O elemento chave para a interacção com esta biblioteca são os marcadores simples com um código binário

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26

Félix, Inês Dinis. "Deep Learning for Markerless Surgical Navigation in Orthopedics." Master's thesis, 2020. http://hdl.handle.net/10316/92155.

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Trabalho de Projeto do Mestrado Integrado em Engenharia Biomédica apresentado à Faculdade de Ciências e Tecnologia<br>A Artroplastia Total do Joelho (ATJ) é um procedimento cirúrgico realizado em pacientes que sofrem de artrite do joelho. O posicionamento correcto dos implantes está fortemente relacionado com múltiplas variáveis cirúrgicas que têm um impacto tremendo no sucesso da cirurgia. Foram investigados e desenvolvidos sistemas de navegação baseados em computador, com o objetivo de auxiliar o cirurgião a controlar, com precisão, essas variáveis cirúrgicas. Esta tese centra-se na navegaçã

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Kundu, Jogendra Nath. "Self-Supervised Domain Adaptation Frameworks for Computer Vision Tasks." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5782.

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There is a strong incentive to build intelligent machines that can understand and adapt to changes in the visual world without human supervision. While humans and animals learn to perceive the world on their own, almost all state-of-the-art vision systems heavily rely on external supervision from millions of manually annotated training examples. Gathering such large-scale manual annotations for structured vision tasks, such as monocular depth estimation, scene segmentation, human pose estimation, faces several practical limitations. Usually, the annotations are gathered in two broad ways; 1) v

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Silva, Tomé Pereira da. "Desenvolvimento de plataforma móvel para futebol robótico." Master's thesis, 2010. http://hdl.handle.net/1822/65406.

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Dissertação de Mestrado em Ciclo de Estudos Integrados Conducentes ao Grau de Mestre em Engenharia Electrónica Industrial e Computadores<br>A robótica de hoje em dia tem inúmeras aplicações práticas, desde a ajuda prestada ao Homem, até situações em que a precisão e a repetibilidade a torna num grande instrumento de trabalho em diversificadas áreas. Em certos casos, em que o meio ambiente que engloba o agente não é totalmente controlado, este tem que se adaptar ao meio envolvente para finalização da sua determinada tarefa. Esta última situação é a mais complexa, mas é também a situação em

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