An Efficient Sensing Localization Algorithm for Free-Form Surface Digitization
Yunbao Huang and Xiaoping Qian
We present a divide-and-conquer method that efficiently finds a near-optimal distribution of sensing locations for free-form surface digitization. We formulate a next-best-point problem and transform the uncertainty of a B-spline surface into a higher-dimensional B-spline surface. This technique all ... [J. Comput. Inf. Sci. Eng. 8, 021008 (2008)] published Fri May 16, 2008.
Comparative study of global invariant descriptors for object recognition
Anant Choksuriwong, Bruno Emile, Helene Laurent, and Christophe Rosenberger
Although many object invariant descriptors have been proposed in the literature, putting them into practice to obtain a robust recognition system that is able to face several perturbations is still a studied problem. After presenting the most commonly used global invariant descriptors, a comparative ... [J. Electron. Imaging 17, 023015 (2008)] published Wed May 14, 2008.
Consensus-based framework for illuminant chromaticity estimation
Simone Bianco, Francesca Gasparini, and Raimondo Schettini
Several algorithms were proposed in the literature to recover the illuminant chromaticity of the original scene. These algorithms work well only when prior assumptions are satisfied, and the best and the worst algorithms may be different for different scenes. We investigate the idea of not relying o ... [J. Electron. Imaging 17, 023013 (2008)] published Wed May 14, 2008.
Recall or precision-oriented strategies for binary classification of skin pixels
Francesca Gasparini, Silvia Corchs, and Raimondo Schettini
Skin detection is a preliminary step in many applications. We analyze some of the most frequently cited binary skin classifiers based on explicit color cluster definition and present possible strategies to improve their performance. In particular, we demonstrate how this can be accomplished by using ... [J. Electron. Imaging 17, 023017 (2008)] published Mon May 12, 2008.
Robust Piecewise-Linear State Observers for Flexible Link Mechanisms
Roberto Caracciolo, Dario Richiedei, and Alberto Trevisani
This paper tackles the problem of designing state observers for flexible link mechanisms: An investigation is made on the possibility of employing observers making use of suitable piecewise-linear truncated dynamics models. A general and novel approach is proposed, which provides an objective way of ... [J. Dyn. Sys., Meas., Control 130, 031011 (2008)] published Mon May 12, 2008.
Intelligent E-Learning Systems: Automatic Construction of Ontologies
Jesus del Peso and Fernando de Arriaga
During the last years a new generation of Intelligent E-Learning Systems (ILS) has emerged with enhanced functionality due, mainly, to influences from Distributed Artificial Intelligence, to the use of cognitive modelling, to the extensive use of the Internet, and to new educational ideas such as th ... [AIP Conf. Proc. 1007, 211 (2008)] published Mon May 12, 2008.