Now showing items 21-40 of 73

    Image blending techniques and their application in underwater mosaicing 

    Prados Gutiérrez, Ricard (Date of defense: 2013-05-02)

    The fusion of several images of the same scene into a single and larger composite is known as photo-mosaic. Unfortunately, the seams along image boundaries are often noticeable, due to photometrical and geometrical ...

    Learning design implementation in context-aware and adaptive mobile learning 

    Gómez Ardila, Sergio Eduardo (Date of defense: 2013-06-06)

    Mobile learning (m-learning) is still in its infancy, and great efforts should be made so as to investigate the potentials of an educational paradigm shift from the traditional one-size-fits-all teaching approaches to an ...

    Simultaneous detection and segmentation for generic objects 

    Torrent Palomeras, Albert (Date of defense: 2013-07-08)

    This thesis deals with the simultaneous detection and segmentation for generic objects in images. The proposed approach is based on building a dictionary of patches, which defines the object and allows the extraction of ...

    Atlas-based segmentation of multiple sclerosis lesions in magnetic resonance imaging 

    Cabezas Grebol, Mariano (Date of defense: 2013-07-16)

    This thesis deals with the segmentation of brain magnetic resonance imaging applied to multiple sclerosis patients. This disease is characterised by the presence of white matter lesions in this image modality. After a ...

    Framework for detection, assessment and assistance of university students with dyslexia and/or reading difficulties 

    Mejía Corredor, Carolina (Date of defense: 2013-10-14)

    During the past years, the adoption of Learning Management System (LMS) to support an e-learning process has been continuously growing. Hence, a potential need and meaningful factor to provide a personalized support, within ...

    Deformable object segmentation in ultra-sound images 

    Massich i Vall, Joan (Date of defense: 2013-12-04)

    This thesis analyses the current strategies to segment breast lesions in Ultra-Sound (US) data and proposes a fully automatic methodology for generating accurate segmentations of breast lesions in US data with low false ...

    Computer-aided lesion detection and segmentation on breast ultrasound 

    Pons Rodríguez, Gerard (Date of defense: 2014-01-21)

    This thesis deals with the detection, segmentation and classification of lesions on sonography. The contribution of the thesis is the development of a new Computer-Aided Diagnosis (CAD) framework capable of detecting, ...

    Automated underwater object classification using optical imagery 

    Shihavuddin, A.S.M. (Date of defense: 2014-03-28)

    This thesis addresses the problem of automated underwater optical image characterization. Remote underwater optical sensing allows the collection and storage of vast amounts of data for which manual classification may take ...

    Coverage path planning for autonomous underwater vehicles 

    Galceran Yebenes, Enric (Date of defense: 2014-04-25)

    This thesis proposes new methods to find collision-free paths allowing an AUV to cover an area of the ocean floor with its sensors, which is known as coverage path planning. First, we propose a coverage path planning method ...

    Sonar scan matching for simultaneous localization and mapping in confined underwater environments 

    Mallios, Angelos (Date of defense: 2014-05-15)

    This thesis presents the development of a localization and mapping algorithm for an autonomous underwater vehicle (AUV). It is based on probabilistic scan matching of raw sonar scans within a pose-based simultaneous ...

    Surface reconstruction methods for seafloor modelling 

    Campos Dausà, Ricard (Date of defense: 2014-06-02)

    Underwater maps are an important source of information for the scientific community, since mapping the seafloor is the starting point for underwater exploration. The advance of range scanning methodologies (both acoustic ...

    Automatic change detection in multiple pigmented skin lesions 

    Korotkov, Konstantin (Date of defense: 2014-07-08)

    Malignant melanoma is the rarest and deadliest of skin cancers causing three times more deaths than all other skin-related malignancies combined. Fortunately, in its early stages, it is completely curable, making a total ...

    Automatic source detection in astronomical images 

    Masias Moyset, Marc (Date of defense: 2014-07-28)

    The use of automatic algorithms to detect astronomical sources (stars, galaxies, gas, dust or cosmic rays) becomes of great importance because of the increasing amount of astronomical images and the inefficiency and ...

    Automated detection of new multiple sclerosis lesions in longitudinal brain magnetic resonance imaging 

    Ganiler, Onur (Date of defense: 2014-10-24)

    This thesis deals with the detection of new multiple sclerosis (MS) lesions in longitudinal brain magnetic resonance (MR) imaging. This disease is characterized by the presence of lesions in the brain, predominantly in the ...

    Forward-looking sonar mosaicing for underwater environments 

    Hurtós Vilarnau, Natàlia (Date of defense: 2014-10-30)

    Vehicle operations in underwater environments are frequently compromised by poor visibility conditions. In this thesis, we propose an end-to-end mosaicing framework tailored to the characteristics of forward-looking sonar ...

    A geometric routing scheme in word-metric spaces for data networks 

    Camelo Botero, Miguel Hernando (Date of defense: 2014-10-31)

    This research work explores the use of the Greedy Geometric Routing (GGR) schemes to solve the scalability problem of the routing systems in Internet-like networks and several families of Data Center architectures. We ...

    New robustness evaluation mechanism for complex networks 

    Manzano Castro, Marc (Date of defense: 2014-11-20)

    Network science has significantly advanced in the last decade, providing insights into the underlying structure and dynamics of complex networks. Critical infrastructures such as telecommunication networks play a pivotal ...

    Web-based application for medical imaging management 

    Mata Miquel, Christian (Date of defense: 2015-07-24)

    Prostate and breast cancer are the most common cause of cancers in men and women, respectively. Medical imaging plays an important role in breast and prostate cancer detection and evaluation. Then to prove that our web-based ...

    Simultaneous localization and mapping using single cluster probability hypothesis density filters 

    Lee, Chee Sing (Date of defense: 2015-09-01)

    The majority of research in feature-based SLAM builds on the legacy of foundational work using the EKF, a single-object estimation technique. Because feature-based SLAM is an inherently multi-object problem, this has led ...

    An approach to melanoma classification exploiting polarization information 

    Rastgoo, Mojdeh (Date of defense: 2016-06-13)

    Malignant melanoma is the deadliest of skin cancers and causes the majority of deaths in comparison to other skin-related malignancies. Yet it is the most treatable type of cancer, thanks to its early diagnosis. Subsequently, ...