Browsing Universitat Pompeu Fabra by subjects "62"

3D audio technologies : applications to sound capture, post-production and listener perception

Cengarle, Giulio (Date of defense: 29-11-2012)

La llegada del sonido 3D está imponiendo cambios en varias etapas del flujo de trabajo, desde los sistemas de captación hasta las metodologías de postproducción y las configuraciones de altavoces. Esta tesis trata varios ...

3D reconstruction of the proximal femur and lumbar vertebrae from dual-energy x-ray absorptiometry for osteoporotic risk assessment

Whitmarsh, Tristan (Date of defense: 25-09-2012)

In this thesis a method was developed to reconstruct both the 3D shape and the BMD distribution of bone structures from Dual-energy X-ray Absorptiometry (DXA) images. The method incorporates a statistical model built from ...

3D subject-specific shape and density modeling of the lumbar spine from 2D DXA images for osteoporosis assessment

López Picazo, Mirella, (Date of defense: 19-03-2019)

Osteoporosis is the most common bone disease, with a significant morbidity and mortality caused by the increase of bone fragility and susceptibility to fracture. Dual Energy X-ray Absorptiometry (DXA) is the gold standard ...

A computational approach to rhythm description - Audio features for the computation of rhythm periodicity functions and their use in tempo induction and music content processing

Gouyon, Fabien

Aquesta dissertació tracta del ritme musical. Més exactamente, tracta de programes informàtics que extreuen automàticament descripcions rítmiques a partir de senyals musicals d'àudio.Presentem nous algorismes per a la ...

A cross-layer mechanism for QoS improvements in VoIP over multi-rate WLAN networks

Sfairopoulou, Anna

In IEEE 802.11 WLANs, Link Adaptation mechanisms, which choose the transmission rate of each node, provoke unexpected and random variations on the effective channel capacity. When these changes are towards lower bitrates, ...

Affine invariant image comparison and its applications

Fedorov, Vadim (Date of defense: 11-10-2016)

La comparación de imágenes es un ingrediente fundamental en muchos problemas de procesamiento de imagen y visión por computador. Esta tesis aborda el problema de la comparación de entornos locales en imágenes, o patches, ...

Algorithms and representations for supporting online music creation with large-scale audio databases

Roma Trepat, Gerard (Date of defense: 05-06-2015)

The rapid adoption of Internet and web technologies has created an opportunity for making music collaboratively by sharing information online. However, current applications for online music making do not take advantage of ...

An Alternative view of ICTs use by older people in human-computer interaction: similarities, digital content creation and perceived well-being

Möller Ferreira, Susan (Date of defense: 04-09-2015)

Within Human-Computer Interaction, older people (60+) are often characterized as a heterogeneous group of consumers of digital content that use ICTs in a limited way due to age-related changes in functional abilities. By ...

Analysis of ensemble expressive performance in string quartets: a statistical and machine learning approach

Marchini, Marco, 1984- (Date of defense: 27-11-2014)

Computational approaches for modeling expressive music performance have produced systems that emulate human expression, but few steps have been taken in the domain of ensemble performance. Polyphonic expression and ...

Analysis of human mobility for architecture and urban studies

Yoshimura, Yuji, 1977- (Date of defense: 25-11-2016)

The goal of this dissertation is to provide insights into spatial analysis for architecture and urban studies through examining human mobility in the built environment based on large-scale datasets. Three studies are ...

An ID-based mutually authenticated edge-to-edge security architecture for bridged provider networks to secure layer-2 communications

Ferdous Wahid, Khan (Date of defense: 26-05-2011)

IEEE standardized a Layer-2 security, named Media Access Control security (MACsec), for interoperability. It provides link-based security through hop-by-hop operation. The link-constrained security of MACsec eliminates the ...

A self-organizing management platform for wireless sensor networks

Cao Minh, Trang (Date of defense: 25-09-2014)

Through advances in sensor, networking, semiconductor and energy storage technologies, Wireless Sensor Networks (WSNs) are increasingly being deployed in many important applications to enable users to access information ...

Aspects of implicit and explicit human interactions with ubiquitous geographic information

Girardin, Fabien

El uso creciente de dispositivos móviles, infraestructuras inalámbricas e Internet está cambiando nuestra vida diaria, no solo la manera en que nos comunicamos o compartimos información, sino también cómo nos relacionamos ...

Aspects of personal information valuation in web browsing and mobile communication

Carrascal Ruiz, Juan Pablo (Date of defense: 26-01-2015)

The goal of this dissertation is to provide insights into how web and mobile phone call users assign value to their personal information. Two user studies are presented. The first one used a refined Experience Sampling ...

Assessing creativity in computer music ensembles: a computational approach

Comajuncosas, Josep M. (Date of defense: 22-01-2016)

Over the last decade Laptop Orchestras and Mobile Ensembles have proliferated. As a result, a large body of research has arisen on infrastructure, evaluation, design principles and compositional methodologies for Computer ...

A statistical dynamic cardiac atlas for the virtual physiological human: construction and application

Hoogendoorn, Corné (Date of defense: 26-02-2014)

This thesis is centered on the construction of a cardiac atlas to serve as a common reference frame in the Virtual Physiological Human (VPH). The construction covers the entire construction pipeline, starting from a set ...

Audio content processing for automatic music genre classification : descriptors, databases, and classifiers

Guaus, Enric

Aquesta tesi versa sobre la classiﬁcació automàtica de gèneres musicals, basada en l'anàlisi del contingut del senyal d'àudio, plantejant-ne els problemes i proposant solucions. Es proposa un estudi de la ...

Audio source separation for music in low-latency and high-latency scenarios

Marxer Piñón, Ricard (Date of defense: 09-09-2013)

Aquesta tesi proposa mètodes per tractar les limitacions de les tècniques existents de separació de fonts musicals en condicions de baixa i alta latència. En primer lloc, ens centrem en els mètodes amb un baix cost ...

Automated cardiac MR image analysis for population imaging

Albà, Xènia (Date of defense: 21-04-2017)

La pràctica clínica i la investigació generen grans quantitats de registres mèdics, incloent-hi imatges. No obstant això, molta informació que podria millorar l'assistència sanitària continua sent inaccessible. Es necessiten ...

Automated processes and intelligent tools in CG media production

Romeo, Marco (Date of defense: 05-02-2016)

La producció moderna dels mitjans descansa de forma important sobre continguts generats per ordinador, tals com animacions 3D, i efectes visuals digitals. Aquests actius complexos poblen videojocs, pel•lícules, televisió, ...

Browsing Universitat Pompeu Fabra by subjects "62"

Browsing Universitat Pompeu Fabra by subjects "62"

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