A coupled wave–tide–circulation model is used to investigate wave–current interactions (WCIs) over the shelf waters of Northwest Atlantic (NWA) during Hurricane Earl (2010). WCIs have substantial impacts on hydrodynamics in upper ocean. The significant wave heights are modulated by WCIs, particularly regions with strong current gradients, a reduction up ~2.1 m (20%) storm. Noticeable decreases ...

International studies indicate that breast cancer is the second greatest cause of death in women with cancer worldwide, and the best way to treat this disease is by its early diagnosis, which can be performed by analyzing images of digital mammograms. One of the ways to make the diagnosis using images is to look for microcalcifications, small accumulations of calcium that can be classified into...

This study applies FPGA (Field Programmable Gate Arrays) technology to implement a motion controller for wafer-handling robot which has three-DOF (Degree of Freedom) motion. The proposed FPGA-based motion controller has two modules. The first module is Nios II processor which is used to realize the motion trajectory computation and the three-axis position/speed controllers. The second module is...

A new code sign implementation of vector median rational hybrid filter based on efficient hardware/software implementation is introduced and applied to colour image filtering problems. This filter is used essentially to remove impulsive and Gaussian noise in colour images. In our design we start by implementing the software solution in system on programmable chip context using NIOS-II softcore ...

We present our experiences using multiple soft processor cores on an FPGA to study advanced computer architecture at the undergraduate level. Our system instantiates multiple processor cores on a single FPGA device using the Altera Nios ® II soft processor and associated CAD tools. With an easy to use development environment and powerful tools to quickly generate designs, an FPGA platform provi...

The most essential part of almost all video coding standards such as H.262/MPEG-2, H.264/MPEG-4 and newly emerged High Efficiency Video Coding (H.265/HEVC) is Motion Estimation. HEVC provides better performance in compression and efficiency in coding for Beyond HD and UHD videos. The main drawback is its computationcomplexity. The complexity is mainly due to Motion Estimation (ME), as it consum...

Two new multiprocessor architectures to accelerate the simulation of multi-agent systems based on the massively parallel GCA (Global Cellular Automata) model are presented. The GCA model is suited to describe and simulate different multi-agent systems. The designed and implemented architectures mainly consist of a set of processors (NIOS II) and a network. The multiprocessor systems allow the i...

The number of resources available in largest reconfigurable devices enables the synthesis of systems with more than 100 Soft-Core processors. Although being a feasible and attainable alternative, few such systems have been built and few works propose methods to create, program and optimize this kind of systems. In this work we present a methodology that helps the designer to built MPSoC systems...

The speed of software algorithms can be greatly improved by using a co-processor to offload computations from the main processor. Multiple coprocessors can further increase the speed of a given algorithm. Based on this idea, three versions of an alpha blending algorithm were implemented on a NIOS II/f. The first implementation was entirely software based. This software based solution was then u...