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Listar por autor "Reig Bolaño, Ramon"

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A contour based approach for bilateral mammogram registration using discrete wavelet analysis

Reig Bolaño, Ramon; Parisi Baradad, Vicenç; Martí i Puig, Pere (Springer, 2009)

Registration of mammograms is an essential step to increase the effectiveness of all screening programs planned to early detect breast cancer in asymptomatic women. New techniques based on data fusion of different spatial ...
A new otolith image contour descriptor based on partial reflection

Reig Bolaño, Ramon; Martí i Puig, Pere; Lombarte, A.; Soria Pérez, José Antonio; Parisi Baradad, Vicenç (Springer, 2010)

In this paper we propose a new contour descriptor for reconstructing fish otolith contours that uses half the number of coefficients needed by the classical elliptical Fourier descriptors (EFDs) for the same accuracy. The ...
A recursive approach to Multiscalar Data Interpolation of sparsely sampled sea surface measurements at different spatial resolutions

Reig Bolaño, Ramon; García Ladona, Emili; Parisi Baradad, Vicenç; Martí i Puig, Pere (IEEE, 2008)

Abstract- In many oceanographic studies there is a need to reconstruct a signal from a set of sparse measurements. We propose an algorithm to iteratively approximate the intermediate values between irregularly sampled ...
Applications of Cumulants in Speech Processing

Zaiats, Vladimir; Solé-Casals, Jordi; Martí i Puig, Pere; Reig Bolaño, Ramon (Springer, 2010)

This paper analyzes applications of cumulant analysis in speech processing. The main focus is made on an integral representation for cUl1luJants using integrals involving cyclic products of kernels. These integrals serve ...
Closed Contour Shape Descriptors with High Compression Properties Based on the Discrete Hartley Transform

Martí i Puig, Pere; Reig Bolaño, Ramon; Danés Garolera, Jaume (IOP Press, 2013)

The quantitative analysis of shapes is required in some research fields, such as taxonomy, agronomy, ecology, medicine, among others. The quantification of an object shape, or a biological entity shape as extension, is ...
Coding of Biosignals Using the Discrete Wavelet Decomposition

Reig Bolaño, Ramon; Martí i Puig, Pere; Solé-Casals, Jordi; Zaiats, Vladimir; Parisi Baradad, Vicenç (Springer, 2010)

Abstract. Wavelet derived codification techniques are widespread used in image codifiers. The wavelet based compression methods are adequate for representing transients. In this paper we explore the use of the discrete ...
Data compression of natural signals based on Discrete Wavelet transform analysis

Reig Bolaño, Ramon; Martí i Puig, Pere; Solé-Casals, Jordi; Parisi Baradad, Vicenç (2009)
An experimental features selection approach in a multiclass classifier

Reig Bolaño, Ramon; Martí i Puig, Pere (IOP Press, 2013)

This paper focuses on an experimental feature selection for the images of otoliths in order to validate their effectiveness in a multiclass classifier used to resolve an automatic otolith identification process. Otoliths ...
Exploring Non-linear Transformations for an Entropybased Voice Activity Detector

Solé-Casals, Jordi; Martí i Puig, Pere; Reig Bolaño, Ramon (2009)

In this paper we explore the use of non-linear transformations in order to improve the performance of an entropy based voice activity detector (VAD). The idea of using a non-linear transformation comes from some previous ...
Features extraction based on the Discrete Hartley Transform for closed contour

Martí i Puig, Pere; Reig Bolaño, Ramon; Danés Garolera, Jaume (IOS Press, 2015)

In this paper the authors propose a new closed contour descriptor that could be seen as a Feature Extractor of closed contours based on the Discrete Hartley Transform (DHT), its main characteristic is that uses only half ...
Games4Learning: Cómo integrar juegos serios en itinerarios de aprendizaje personalizados?

Grau Carrión, Sergi; Reig Bolaño, Ramon; Puig Ribera, Anna; López, Maite; Rodríguez, Immaculada (Institute of Electrical and Electronics Engineers Inc., 2015)

Una enseñanza de calidad y el buen aprendizaje de las disciplinas STEM (Science, Technology, Engineering, and Mathematics) son factores esenciales en la motivación y la formación de profesionales en la sociedad actual. ...
Image Processing to Detect and Classify Situations and States of Elderly People

Reig Bolaño, Ramon; Martí i Puig, Pere; Bajo, Javier; Rodríguez, Sara; De Paz, Juan F.; Rubio, Manuel P. (Springer, 2011)

Abstract. Monitoring and tracking of elderly people using vision algorithms is an strategy gaining relevance to detect anomalous and potentially dangerous situations and react immediately. In general vision algorithms ...
Image registration techniques with multiresolution analysis in satellite oceanography

Reig Bolaño, Ramon; Parisi Baradad, Vicenç; García Ladona, Emili (Universitat de Vic, 12-09-2002)

En aquest article es fa una descripció dels procediments realitzats per enregistrar dues imatges geomètricament, de forma automàtica, si es pren la primera com a imatge de referència. Es comparen els resultats obtinguts ...
Impacte i millora en el seguiment de la curació de ferides utilitzant intel·ligència artificial

Reifs Jiménez, David (Universitat de Vic - Universitat Central de Catalunya, 28-06-2022)

Les úlceres són una causa important de morbiditat i mortalitat a tot el món i es produeixen per diverses causes, com ara diabetis mellitus, neuropatia perifèrica, immobilitat, pressió, arteriosclerosi, infeccions i/o ...
Improving Pitch Tracking Performance in Hard Noise Conditions by a Preprocessing Based on Mathematical Morphology

Martí i Puig, Pere; Solé-Casals, Jordi; Reig Bolaño, Ramon (2009)

In this paper we show how a nonlinear preprocessing of speech signal -with high noise- based on morphological filters improves the performance of robust algorithms for pitch tracking (RAPT). This result happens for a ...
Integració de la comunicació a través d’aplicacions per mòbil en un model d'atenció primària basat en l'equip interprofessional

Marin Gómez, F. Xavier (Universitat de Vic - Universitat Central de Catalunya, 20-09-2019)

Compendi d’estudis publicats entre el 2017 i el 2019, que demostren, entre d’altres coses, que els professionals sanitaris d’atenció primària de la salut (APS) utilitzen habitualment les aplicacions per a telèfons intel·ligents ...
Market Stock Decisions Based on Morphological Filtering

Martí i Puig, Pere; Reig Bolaño, Ramon; Bajo, Javier; Rodríguez, Sara (Springer, 2010)

In this paper we use a nonlinear processing technique based on mathematical morphology to develop a simple day trading system that automatically decides the timing to commute the marked strategy in terms of sort/long ...
Mathematical Morphology Preprocessing to Mitigate AWGN Effects: Improving Pitch Tracking Performance in Hard Noise Conditions

Martí i Puig, Pere; Solé-Casals, Jordi; Reig Bolaño, Ramon; Zaiats, Vladimir (Springer, 2010)

Abstract. In this paper we show how a nonlinear preprocessing of speech signal -with high noise- based on morphological filters improves the performance of robust algorithms for pitch tracking (RAPT). This result happens ...
Otoliths identifiers using image contours EFD

Reig Bolaño, Ramon; Martí i Puig, Pere; Rodríguez, Sara; Bajo, Javier; Parisi Baradad, Vicenç (Springer Berlín / Heidelberg, 2010)

Abstract. In this paper we analyze the characteristics of an experimental otolith identification system based on image contours described with Elliptical Fourier Descriptors (EFD). Otoliths are found in the inner ear of ...
Quantitatively scoring behavior from video-recorded, long-lasting fish trajectories

Martí i Puig, Pere; Serra i Serra, Moisès; Campos-Candela, A.; Reig Bolaño, Ramon; Manjabacas, A.; Palmer, M. (Elsevier, 2018)

Scoring animal behavior is increasingly needed for better understanding ecological processes. For example, behavior shapes harvesting likelihood, thus management of harvested resources should improve after accounting for ...

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Listar por autor "Reig Bolaño, Ramon"

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