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Optical flow estimation from image sequences has been for several years a mathematical process carried out by general purpose processors in no real time. In this work a specific architecture for this task has been developed and tested with simulators of hardware description languages. This architecture can estimate the optical flow in real time and can be(More)
This paper proposes LL-MAC, a medium access control (MAC) protocol specifically designed for wireless sensor network applications that require low data latency. Wireless sensor networks use battery-operated computing and sensing devices and their main application is environmental monitoring. In order to achieve such requirements, the whole network must work(More)
BACKGROUND Magnetic resonance imaging (MRI) findings suggestive of neurocutaneous melanosis (NCM) have been reported in asymptomatic patients with giant congenital melanocytic nevi (GCMN). OBJECTIVE To investigate the presence of NCM and the clinical neurologic status of patients with GCMN involving the head an neck. METHODS Thirteen patients with GCMN(More)
The node location problem in wireless networks has been a research interest in the last years. In environments where GPS is not an option (e.g., for consumption reasons or because there is no direct link with the satellite constellation), the estimation of a node position using only RF signals is not a trivial task. Although some other systems have been(More)
The research presented in this article applies the newest Field-Programmable-Gate-Arrays to implement motor controller devices in accordance with the actual core-based design. The flexibility of the System-on-a-Programmable-Chips in motor multi-axis control systems enables the processing of the most intensive computation operations by hardware (PID IP(More)