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Publications

Publications by CTM

2008

Impact of Informtation Technology in Higher Secondary Education cases

Authors
Torres, JM; Moreira, RS; Pais, MD;

Publication
ACTAS DE LA III CONFERENCIA IBERICA DE SISTEMAS Y TECNOLOGIAS DE LA INFORMACION, VOL 1

Abstract

2008

Business exploitation cases For providing pervasiveness services

Authors
Santos, F; Oliveira, JM; Roque, R; Korthals, I; Pascotto, R;

Publication
Proceedings of the 10th International Conference on Information Integration and Web-based Applications and Services, iiWAS 2008

Abstract
This article describes a process for identifying the most interesting business exploitation cases (BECs) for the implementation of the Daidalos Integrated Project architecture. Starting from the characterization of the telecommunication service provision market and from the project business model framework (BMF), we analyze the main enabling players that are in the position to occupy the main roles in the info-communication value chain. From this analysis, we reason which are the most probable scenarios for establishing business relations between these players, in the present and in the near future telecommunications context. © 2008 ACM.

2008

Dynamic generation of SMIL-based multimedia interfaces

Authors
Oliveira, JM; Carrapatoso, E;

Publication
Journal of Multimedia

Abstract
The current heterogeneous world of networks and terminals combined with the generalized mobility of users pose telecommunications operators and service providers the challenge of dynamically adapt the services they provide. This paper presents a proposal to solve the problem of the adaptation of multimedia services in mobile contexts. The paper combines context-awareness techniques with user interface modeling and description to dynamically adapt telecommunications services to user resources, in terms of terminal and network conditions. The solution is mainly characterized by the approach used for resolving the existing dependencies among user interface variables, which is based on the constraints theory, and by the mechanism for acquiring the user context information, which uses the Parlay/OSA interfaces. The experiments and tests carried out with these techniques demonstrate a general Improvement of the adaptation of multimedia services in mobile environments, in comparison to systems that do not dynamically integrate the user context information in the adaptation process. © 2008 Academy Publisher.

2008

A CONNECTED PATH APPROACH FOR STAFF DETECTION ON A MUSIC SCORE

Authors
Cardoso, JS; Capela, A; Rebelo, A; Guedes, C;

Publication
2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5

Abstract
The preservation of many music works produced in the past entails their digitalization and consequent accessibility in an easy-to-manage digital format. Carrying this task manually is very time consuming and error prone. While optical music recognition systems usually perform well on printed scores, the processing of handwritten musical scores by computers remain far from ideal. One of the fundamental stages to carry out this task is the staff line detection. In this paper a new method for the automatic detection of music staff lines based on a connected path approach is presented. Lines affected by curvature, discontinuities, and inclination are robustly detected. Experimental results show that the proposed technique consistently outperforms well-established algorithms.

2008

BREAST CONTOUR DETECTION WITH SHAPE PRIORS

Authors
Sousa, R; Cardoso, JS; da Costa, JFP; Cardoso, MJ;

Publication
2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5

Abstract
Breast cancer conservative treatment (BCCT) is considered the gold standard of breast cancer treatment. However, aesthetic results are heterogeneous and difficult to evaluate in a standardised way. The limited reproducibility of subjective aesthetic evaluation in BCCT forced the research on objective methods. A recent computer system was developed to objectively and automatically evaluate the aesthetic result of BCCT In this system, the detection of the breast contour on the digital photograph of the patient is necessary to extract the features subsequently used in the evaluation process. In this paper we extend an algorithm based on the shortest path on a graph to detect automatically the breast contour. The advantage of graph algorithms is that they are guaranteed to find the global optimum of the problem; the difficulty is that they make it hard to enforce shape constraints. We define and compare different techniques to introduce the a priory knowledge of the mammary contour. Experimental results show that the proposed techniques consistently outperform the base method.

2008

Integrated Recognition System for Music Scores

Authors
Capela, A; Cardoso, JS; Rebelo, A; Guedes, C;

Publication
Proceedings of the 2008 International Computer Music Conference, ICMC 2008, Belfast, Ireland, August 24-29, 2008

Abstract
Many music works produced in the last century still exist only as original manuscripts or as photocopies. Preserving them entails their digitalization and consequent accessibility in a digital format easy-to-manage which encourages browsing, retrieval, search and analysis while providing a generalized access to the digital material. The manual process to carry out this task is very time consuming and error prone. Automatic optical music recognition (OMR) has emerged as a partial solution to this problem. However, the full potential of this process only reveals itself when integrated in a system that provides seamless access to browsing, retrieval, search and analysis. We address this demand by proposing a modular, flexible and scalable framework that fully integrates the abovementioned functionalities. A web based system to carry out the automatic recognition process, allowing the creation and management of a music corpus, while providing generalized access to it, is a unique and innovative approach to the problem. A prototype has been implemented and is being used as a test platform for OMR algorithms.

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