UTM publishes five more papers in international journals

UTM publishes five more papers in international journals

INESC TEC’s Telecommunications and Multimedia Unit (UTM) has recently published five more papers in international journals, this time in the areas of music, algorithms to detect and track objects in video sequences and optical communications.

30th October 2013

The first paper, entitled “Revisiting Inter-Genre Similarity”, was published in the IEEE Signal Processing Letters and authored by Fabien Gouyon at UTM and Bob Sturm at the University of Aalborg in Copenhagen, Denmark. The paper critically addresses the idea of similarity between musical genres (Inter-Genre Similarity – IGS) within machine learning in particular in general and within music genre recognition in particular.

The second article, entitled “MIRrors: Music Information Research reflects on its future”, was also written by Fabien Gouyon, together with Perfecto Herrera-Boyer at the University of Pompeu Fabra, in Barcelona, Spain. Published in the Journal of Intelligent Information Systems, this work addresses a set of issues associated with three key aspects of scientific research on music information: music information, (ii) the people who create, search and use that information, (iii) and a scenario of interaction between humans and that information.

The third paper, written by Matthew Davies, Fabien Gouyon and Pedro Silva (INESC TEC), and Guy Adison from the Umeå University, in Sweden, is titled “The effect of microtiming deviations on the perception of groove in short rhythms” and was published in Music Perception. In the paper, the researchers address the effect that microtiming or systematic timing changes in music performances have on the perception of groove (sensation of movement or need to move).

The fourth paper is titled “Analysis of object description methods in a video object tracking environment" and was published in Machine Vision and Applications. Written by Pedro Carvalho, Telmo Oliveira, Lucian Ciobanu, Jaime S. Cardoso and Luís Côrte-Real from UTM, and also by Filipe Gaspar (ADETTI-IUL/ISCTE), Luís Teixeira (FEUP), Rafael Bastos (eyenov & ADETTI-IUL/ISCTE) and Miguel S. Dias (Microsoft Language Development Center & ISCTE), this paper describes an intense implementation, integration and experimentation work that proposes a change in the paradigm that assesses models and algorithms, more specifically the algorithms used to detect and track objects in video sequences. The researchers propose a holistic assessment for the models using the tracking results so as to include different influences and e interdependencies, proving that there are advantages relatively to traditional approaches. This evaluation makes it possible to better characterise the models and the algorithms so that they can be used afterwards in certain application contexts. The algorithm was the result of a close collaboration between INESC TEC and researchers at Microsoft and ADETTI-IUL/ISCTE-Lisbon.

Finally, the fifth paper was written by Luís Pessoa and Henrique Salgado (UTM), Bruno Romeira and José Figueiredo (University of do Algarve, Portugal) and Charles Ironside (University of Glasgow, Scotland). Titled “Photo-Detectors Integrated with Resonant Tunneling Diodes”, this paper addresses a new concept of photo-detector, an element that converts an optical signal in to an electrical signal that can be applied in wireless communications based on optical fibre networks. This photo-detector incorporates a Resonant-tunneling diode (RTD-PD), which can be operated in an oscillating scheme depending on the static point of operation. More specifically, the researchers demonstrated the transmission of digitally modulated signals benefiting from the synchronisation features of the RTD-PD, assessing the error vector magnitude (EVM) for  different phase and frequency modulation. These devices are being developed at the University of Glasgow, in partnership with the University of Algarve and INESC TEC as part of the FCT project Wowi.

The INESC TEC researchers mentioned in this article are associated with the following partner institutions: INESC Porto and FEUP.

UTM/INESC TEC, October 2013