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Localization is a fundamental problem in sensor networks. This paper proposes a new distributed localization algorithm called GDL ("Geographic Distributed Localization") that is based on hop-counting. Although the idea of predicting node position from connectivity information in WSNs is not new, our algorithm improves on other localization algorithms of this type in several key ways. Results...
Electrocardiographs (ECG) signal collected during magnetic resonance (MR) imaging is affected by signal artifact because magnetic fields produce competing signals, from moving conductors in the large vessels. That is called the magnetohydrodynamic effect, which makes it difficult to recognize ST-T changes from ECG signal collected in a magnetic field (MRI). Resolving that problem is important both...
Image subtraction is widely used in angiography as a means of highlighting differences induced by contrast agents. New knowledge of previously unsuspected causes of disease, in particular, secondhand smoke exposure, spurs interest in pushing the limits of early accurate diagnosis. Simple image subtraction induces artifacts causing problems for ensuing measurements and 3D reconstruction. Image registration...
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