Search results for "programma"

showing 10 items of 708 documents

Design and implementation of an embedded coprocessor with native support for 5D, quadruple-based Clifford algebra

2013

Geometric or Clifford algebra (CA) is a powerful mathematical tool that offers a natural and intuitive way to model geometric facts in a number of research fields, such as robotics, machine vision, and computer graphics. Operating in higher dimensional spaces, its practical use is hindered, however, by a significant computational cost, only partially addressed by dedicated software libraries and hardware/software codesigns. For low-dimensional algebras, several dedicated hardware accelerators and coprocessing architectures have been already proposed in the literature. This paper introduces the architecture of CliffordALU5, an embedded coprocessing core conceived for native execution of up t…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniCoprocessorSpeedupComputational Theory and MathematicsClifford algebra Computational geometry Embedded coprocessors Application-specific processors FPGA-based prototypingHardware and ArchitectureComputer scienceClifford algebraParallel computingComputational geometryField-programmable gate arraySoftwareTheoretical Computer Science
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A New Embedded Coprocessor for Clifford Algebra based Software Intensive Systems

2011

Computer graphics applications require efficient tools to model geometric objects and their transformations. Clifford algebra (also known as geometric algebra) is receiving a growing attention in many research fields, such as computer graphics, machine vision and robotics, as a new, interesting computational paradigm that offers a natural and intuitive way to perform geometric calculations. At the same time, compute-intensive graphics algorithms require the execution of million Clifford operations. Clifford algebra based software intensive systems need therefore the support of specialized hardware architectures capable of accelerating Clifford operations execution. In this paper the archite…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniCoprocessorSpeedupComputer sciencebusiness.industryembedded coprocessorsClifford algebraParallel computingcomputer graphicComputer graphicsGeometric algebracompute-intensive algorithmSoftwaresoftware intensive systemComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATIONcomputational geometryGraphicsClifford algebraField-programmable gate arraybusiness
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Il Linguaggio C - Fondamenti e tecniche di programmazione

2013

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniLinguaggi di programmazione
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An Embedded Processor for Metabolic Networks Optimization

2011

In recent years biological processes modelling and simulation have become two key issues in analyzing complex cellular systems. The computational requirements suggest to investigate alternative solutions to the common supercomputers and clusters in order to optimize and overcome computational bottleneck. The goal of this work is the design and the realization of an embedded processor for metabolic networks optimization in order to examine their behaviour and robustness under malfunctions of one or more nodes. The embedded processor has been prototyped on the Celoxica RC203E board, equipped with programmable FPGA technologies. A case studied outlining the E. Coli bacteria metabolic network i…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniMetabolic networks FPGA embedded processorRobustness (computer science)Computer sciencebusiness.industryEmbedded systemMetabolic networkSignal processing algorithmsAlgorithm designKey issuesbusinessField-programmable gate arrayBottleneck2011 International Conference on Complex, Intelligent, and Software Intensive Systems
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Design and Implementation of an Efficient Fingerprint Features Extractor

2014

Biometric recognition systems are rapidly evolving technologies and their use in embedded devices for accessing and managing data and resources is a very challenging issue. Usually, they are composed of three main modules: Acquisition, Features Extraction and Matching. In this paper the hardware design and implementation of an efficient fingerprint features extractor for embedded devices is described. The proposed architecture, designed for different acquisition sensors, is composed of four blocks: Image Pre-processor, Macro-Features Extractor, Micro- Features Extractor and Master Controller. The Image Pre- processor block increases the quality level of the input raw image and performs an a…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniMinutiaeBiometricsComputer sciencebusiness.industryFingerprint (computing)Feature extractionFingerprint recognitionComputer visionArtificial intelligenceFPGA Fingerprint Features Extraction Adaptive ProcessingField-programmable gate arraybusinessImage resolutionBlock (data storage)2014 17th Euromicro Conference on Digital System Design
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An Embedded, FPGA-based Computer Graphics Coprocessor with Native Geometric Algebra Support

2009

The representation of geometric objects and their transformation are the two key aspects in computer graphics applications. Traditionally, computer-intensive matrix calculations are involved in modeling and rendering three-dimensional (3D) scenery. Geometric algebra (aka Clifford algebra) is attracting attention as a natural way to model geometric facts and as a powerful analytical tool for symbolic calculations. In this paper, the architecture of Clifford coprocessor (CliffoSor) is introduced. CliffoSor is an embedded parallel coprocessing core that offers direct hardware support to Clifford algebra operators. A prototype implementation on a programmable gate array (FPGA) board is detailed…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniSpeedupCoprocessorComputer scienceClifford algebraParallel computingRendering (computer graphics)Computer graphicsGeometric algebraHardware and ArchitectureComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATIONElectrical and Electronic EngineeringClifford algebra Computational geometry Embedded coprocessors Application-specific processor FPGA-based prototypingField-programmable gate arraySoftwareEuclidean vector
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A Dual-Core Coprocessor with Native 4D Clifford Algebra Support

2012

Geometric or Clifford Algebra (CA) is a powerful mathematical tool that is attracting a growing attention in many research fields such as computer graphics, computer vision, robotics and medical imaging for its natural and intuitive way to represent geometric objects and their transformations. This paper introduces the architecture of CliffordCoreDuo, an embedded dual-core coprocessor that offers direct hardware support to four-dimensional (4D) Clifford algebra operations. A prototype implementation on an FPGA board is detailed. Experimental results show a 1.6× average speedup of CliffordCoreDuo in comparison with the baseline mono-core architecture. A potential cycle speedup of about 40× o…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniSpeedupCoprocessorComputer sciencebusiness.industryClifford algebraParallel computingComputer graphicsGeometric algebraSoftwareClifford algebra embedded coprocessors multi-core architectures FPGA prototyping medical imagingField-programmable gate arraybusinessFPGA prototype2012 15th Euromicro Conference on Digital System Design
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Embedded Coprocessors for Native Execution of Geometric Algebra Operations

2016

Clifford algebra or geometric algebra (GA) is a simple and intuitive way to model geometric objects and their transformations. Operating in high-dimensional vector spaces with significant computational costs, the practical use of GA requires dedicated software and/or hardware architectures to directly support Clifford data types and operators. In this paper, a family of embedded coprocessors for the native execution of GA operations is presented. The paper shows the evolution of the coprocessor family focusing on the latest two architectures that offer direct hardware support to up to five-dimensional Clifford operations. The proposed coprocessors exploit hardware-oriented representations o…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniTheoretical computer scienceCoprocessorInverse kinematicsbusiness.industryApplied MathematicsClifford algebraGeometric algebra Embedded coprocessors Application-specific processors FPGA-based prototyping.02 engineering and technologyParallel computingData type020202 computer hardware & architectureGeometric algebraSoftware0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processingField-programmable gate arraybusinessVector spaceMathematicsAdvances in Applied Clifford Algebras
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A Programmable Networked Processing Node for 3D Brain Vessels Reconstruction

2011

Real-time 3D imaging represents a developing trend in medical imaging. However, most of the 3D medical imaging algorithms are computationally intensive. In this paper, a programmable networked node for 3D brain vessels reconstruction is proposed. Starting from 2D PC-MRA (Phase-Contrast Magnetic Resonance Angiography) sequences, the node is able to generate the 3D brain vasculature using the MIP (Maximum Intensity Projection) algorithm. The node has been prototyped on the Celoxica RC203E board, equipped with a Virtex II FPGA, to get the advantages of an hardware implementation, reaching a better throughput with respect to analogous software implementations. Its generality and programmable ca…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniVirtexbusiness.industryComputer scienceNode (networking)Iterative reconstructionDICOMMaximum intensity projectionMedical imagingMedical data processing 3D Brain Vessels Reconstruction embedded FPGA-based deviceComputer visionArtificial intelligenceField-programmable gate arraybusinessThroughput (business)Computer hardware
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Ebraismo, identità e memoria. Quattro scene dalle vita di Arnold Schoenberg (1874-1951)

2020

Il saggio ricostruisce il percorso di riappropriazione dell'identità ebraica di Arnold Schoenberg, facendo riferimento - in modo particolare - agli eventi che hanno determinato la conversione all'ebraismo, agli scritti politici del 1933-38, all'epistolario con Thomas Mann durante l'esilio negli Stati Uniti e alla genesi e concezione poetica e musicale di A survivor from Warsaw op. 46 (1947). The essay reconstructs the path of re-appropriation of Arnold Schoenberg's Jewish identity, referring - in particular - to the events that led to the conversion to Judaism, to the political writings of 1933-38, to the correspondence with Thomas Mann during the exile in the United States and the genesis …

Settore L-ART/07 - Musicologia E Storia Della MusicaArnold Schoenberg hebraism Kandinsky A Four-Point Program for Jewry (1938) Thomas Mann A survivor from Warsaw (1947).Arnold Schoenberg ebraismo Kandinsky Programma in quattro punti per la comunità ebraica (1938) Thomas Mann Un sopravvissuto di Varsavia (1947).
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