Research Publications
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| The energy consumed by radio transceivers is a significant factor limiting the lifetime of wireless sensor networks (WSNs). Maximizing WSN lifetime is the overall aim of this work, which proposes that optimal routing be defined with a network design... This paper shows how to use an ideal rubber string, which is clamped down at both ends, as a memory device. The information is stored on the string by giving it an initial shape, where the Fourier coefficients of this shape represent the code bits. Once ... Due to the recent progress in computer vision to interpret images and sequence of images, the video camera is a promising sensor for traffic monitoring and traffic surveillance at low cost. This paper focuses on the detection and tracking of multiple ... A new method for optimal robust estimation. The algorithm mBPCR is a tool for estimating the profile of the log2ratio of copy number data. The procedure is a Bayesian piecewise constant regression and can be applied, generally, to estimate any piecewise constant function (like the log2ratio of the ... We give an continuation-based implementation of rewriting for systems in the LCF tradition. These systems must construct explicit proofs of equations when rewriting, and currently do so in a way that can be very space-inefficient. An explicit ... The objective of the 1st International Workshop on Social Interoperable Networks - is to bring together the Social Networks community and to discuss the technical interoperability issues facing service providers and end users. The workshop will attract ... A multiclass classification problem can be reduced to a collection of binary problems using an error-correcting coding matrix that specifies the binary partitions of the classes. The final classifier is an ensemble of base classifiers learned on the ... Roundabouts are widely used traffic control measures that function particularly well under balanced, light-to-medium approach traffic flows. However, even moderate flow imbalance can cause disruption and lengthy delays. One solution is to meter traffic on... The ubiquitous computing vision includes Single Display Groupware (SDG) devices embedded in our normal envi- ronment. This paper explores the nature of interfaces for supporting people in accessing their files on such displays. To do this, we designed ... We describe an energy minimization algorithm for functions defined on 4-connected lattices, of the type usually encountered in problems involving images. Such functions are often minimized using graph-cuts/max-flow, but this method is only applicable... In this paper, we identify the constraints under which the generally ill-posed problem of simultaneous recovery of surface shape and its photometric invariants can be rendered tractable. We examine the cases where a single or more images are acquired ... We describe the research outcomes and resulting implementation and validation of a prototype IP telephony and data acceleration system for satellite communications. The system has been designed as a quickly deployable solution for generic use with fixed ... Gait is one of well recognized biometrics that has been widely used for human identification. However, viewing direction change causes many difficulties to the current gait recognition because the viewing angle under which the gait signature database was ... One of the reasons for introducing software product lines (SPL) is the reduction of costs through reusing common assets for different products. Developing assets to be reused in different products is often not easy. Increasing complexity due to the ... The immense popularity of new-age ``Web 2'' applications such as YouTube, Flickr, and Facebook, and non-Web applications such as Peer-to-Peer (P2P) file sharing, Voice over IP, online games, and media streaming have significantly altered the ... We present a method for calibrating the rotation between two cameras in a camera rig in the case of non-overlapping fields of view and in a globally consistent manner. First, rotation averaging strategies are discussed and an $L_1$-optimal rotation ... In this paper we report some new results obtained in the field of multi-agent systems that are based on convex optimization. First, we provide review of a set of polynomial function optimization tools including sum of squares (SOS) and semidefinite ... In this paper, we present a feature combination approach to object tracking based upon graph embedding techniques. The method presented here abstracts the low complexity features used for purposes of tracking to a relational structure and employs ... The move towards the Policy-Oriented Web is destined to provide support for policy expression and management in the core web layers. One of the most promising areas that can drive this new technology adoption is e-Society communities. With so much ... Heuristic forward search is the dominant approach to satisficing planning to date. Most successful planning systems, however, go beyond plain heuristic search by employing various search-enhancement techniques. One example is the use of helpful ... A distance metric that can accurately reflect the intrinsic characteristics of data is critical for visual recognition tasks. An effective solution to defining such a metric is to learn it from a set of training samples. In this work, we propose a fast... |