DSpace Angular :: Browsing CTM - Indexed Articles in Journals by Issue Date

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Monitoring Emerging IPv6 Wireless Access Networks

( 2005) Pedro Marques ; Manuel Ricardo ; Hélder Fernandes Castro

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Toward a Generic Evaluation of Image Segmentation

( 2005) Jaime Cardoso ; Luís Corte Real

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Accumulator size minimization for a fast cumulant-based motion estimation

( 2005) Jaime Cardoso ; Luís Corte Real

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Choosing observers for evaluation of aesthetic results in breast cancer conservative treatment

( 2005) Jaime Cardoso ; Maria João Cardoso ; Ana Cristina Santos

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Programmable analogue VLSI implementation for asymmetric sigmoid neural activation function and its derivative

( 2005) Sebastian Tabarce ; Pedro Guedes de Oliveira ; Vítor Grade Tavares

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Modelling ordinal relations with SVMs: an application to Objective Aesthetic Evaluation of Breast Cancer Conservative Treatment

( 2005) Jaime Cardoso ; Joaquim Pinto da Costa ; Maria João Cardoso

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Interobserver agreement and consensus over the esthetic evaluation of conservative treatment for breast cancer

( 2006) Jaime Cardoso ; Maria João Cardoso

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A Measure for Mutual Refinements of Image Segmentations

( 2006) Jaime Cardoso ; Luís Corte Real

In this paper, we recover a graph interpretation of the mutual partition distance, proposed recently by Cardoso and Corte-Real. We deduce some properties of this measure, and establish a correspondence with the partition distance introduced by Almudevar and Field and Gusfield, and independently by Guigues. We also present some different formulations for the computation of the mutual partition distance. Finally, a comparison is made with similar measures.

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Scalability of Name Resolution for Ambient Networks

( 2006) P. Paakkonen ; N. Akhtar ; Rui Lopes Campos

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Object Segmentation Using Background Modelling and Cascaded Change Detection

( 2007) Luís F. Teixeira ; Luís Corte Real ; Jaime Cardoso

The automatic extraction and analysis of visual information is becoming generalised. The first step in this processing chain is usually separating or segmenting the captured visual scene in individual objects. Obtaining a perceptually correct segmentation is however a cumbersome task. Moreover, typical applications relying on object segmentation, such as visual surveillance, introduce two additional requirements: (1) it should represent only a small fraction of the total amount of processing time and (2) realtime overall processing. We propose a technique that tackles these problems using a cascade of change detection tests, including noise-induced, illumination variation and structural changes. An objective comparison of common pixelwise modelling methods is first done. A cost-based partition distance between segmentation masks is introduced and used to evaluate the methods. Both the mixture of Gaussians and the kernel density estimation are used as a base to detect structural changes in the proposed algorithm. Experimental results show that the cascade technique consistently outperforms the base methods, without additional post-processing and without additional processing overheads.

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Expeditious Modelling of Virtual Urban Environments with Geospatial L-systems

( 2007) António Coelho ; Maximino Bessa ; Augusto Sousa ; Fernando Nunes Ferreira

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Matched filtering and parameter estimation of ringdown waveforms

( 2007) Emanuele Berti ; Vitor Cardoso ; Marco Cavaglià ; Jaime Cardoso

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Sound and Music Computing: Research Trends and Some Key Issues

( 2007) P. Polotti ; D. Pressnitzer ; H. Penttinen ; G. Volpe ; Fabien Gouyon ; G. Widmer ; D. Rocchesso ; V. Välimäki ; C. Erkut

This contribution attempts to give an overview of current research trends and open research problems in the rich ﬁeld of Sound and Music Computing (SMC). To that end, the ﬁeld is roughly divided into three large areas related to Sound, Music, and Interaction, respectively, and within each of these, major research trends are brieﬂy described. In addition, for reach sub-ﬁeld a small number of open research (or research strategy) issues are identiﬁed that should be addressed in order to further advance the SMC ﬁeld.

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Factors Determining Esthetic Outcome after Breast Cancer Conservative Treatment

( 2007) Maria Joao Cardoso ; Jaime Cardoso