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This research introduces a noise-resistant and computational efficient segmentation approach towards less constrained iris recognition. The UBIRIS.v2 database which contains close-up eye images taken under visible light is used to test the proposed algorithm. The proposed segmentation approach is based on a modified and fast Hough transform augmented with a newly developed strategy to define iris...
This paper develops a client-side context-aware search application which is built on the context-aware infrastructure. A context-aware architecture is designed to collect the mobile user's context information, derive mobile user's current context, distribute user context among context-aware applications, and support the context-aware applications. The context acquisition is centralized at the context...
Cooperative communications can help combat fading and hence can significantly increase the capacity of wireless networks. Although various schemes have been proposed to leverage this capability, most of the current mechanisms require hardware modification. We present a novel MAC protocol for the multirate ad hoc network, called CODE, to entail simultaneous transmissions of unencoded information by...
A polygraph is a tool which provides access, visualization and analysis for large amounts of recorded physiologic data. The goal of this work is to provide an open source framework for studying and detailing data. Recorded data, internal epochs, montages, and a graphic user interface (GUI) are linked together with this realization.
In this article, an enhanced wavelet domain communication system (EWDCS) is presented. The basic idea for this system is to synthesize an intelligent adaptive waveform in the wavelet domain at both the transmitter and receiver to avoid spectral crowded regions. This approach offers better bit error performance in contrast to other conventional interference mitigation techniques that process the signal...
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