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检索条件"任意字段=2016 Conference on Design and Architectures for Signal and Image Processing, DASIP 2016"

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design of distributed arithmetic based reconfigurable filters

Design of distributed arithmetic based reconfigurable filter...

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IEEE India conference (INDICON)

作者： M Sandhya E Senthilkumar J Manikandan Department of ECE and Crucible of Research and Innovation (CORI) PES University Bangalore Karnataka INDIA

ISBN: (纸本)9781509036479

Digital signal processing techniques are widely used for a large number of applications with digital filters being considered as one of the basic elements. Digital filter design involves several multiply-and-accumulate (MAC) operations, which consume a large amount of hardware resources and computation cost. Distributed Arithmetic (DA) approach is proposed in literature as an alternative and efficient technique for MAC operation based designs. Similarly, reconfigurable computing possesses the benefits of both worlds, i.e., flexibility of software and high performance of hardware using flexible high speed computing fabric such as FPGA for efficient use of hardware resources. In this paper, design of FIR filters using the concepts of distributed arithmetic and reconfigurable computing is proposed. Two reconfigurable architectures are proposed and implemented on an SRAM based Xilinx FPGA board. The performance of proposed design is evaluated with and without reconfiguration architectures and their results are reported. It is observed that the proposed reconfigurable design saved 41.6-86.9% of hardware resources and 67.92% of power over the conventional non-reconfigurable design.

关键词： Finite impulse response filters Band-pass filters Hardware Cutoff frequency Table lookup Field programmable gate arrays

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Optimization of reconfigurable fabric of DSP processor with image processing

Optimization of reconfigurable fabric of DSP processor with ...

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International conference on Electrical, Electronics, and Optimization Techniques (ICEEOT)

作者： Manisha P. Khorgade Pravin Dakhole ETC Department RGCER Nagpur India Electronics Department YCCE Nagpur India

In recent scenario, design complexity increases which motivate system designer to innovate continuously. While designing complex system with tight coupling, various block designing is become a choice. The strongly emerging class Coarse-Grained Reconfigurable Architecture (CGRA), is currently receiving due attention having excellent performance as well as flexibility in fabrication. CGRA is having one of the important blocks as reconfigurable array or fabric. In this paper, design of reconfigurable fabric with various combinations of processing element is presented. Also this design is analyze with area, power and delay t achieve optimization of DSP processor using various FPGA.

关键词： Radio frequency Fabrics Field programmable gate arrays Optimization image edge detection Digital signal processing

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Multilevel image segmentation using hybrid Darwinian swarm Optimization

Multilevel image segmentation using hybrid Darwinian swarm O...

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International conference on signal processing and Integrated Networks (SPIN)

作者： Priyanka Chauhan S.J. Wagh Department of ECE M.G.M. COET NOIDA Uttar Pradesh

ISBN: (纸本)9781467391986

DPSO-FOHA I and DPSO-FOHA II algorithms, based on multilevel thresholding are proposed in this paper. Optimal multilevel thresholds for colored images are maximized by using Otsu's between class variance functions. The Darwinian principle has been used to improve the value of fitness function along with the concept of fractional calculus, which optimizes it in lesser number of search iterations. Comparative analysis is presented between existing and proposed algorithms for performance assessment using standard deviation, PSNR, SSIM and computational search time of CPU. Experimental results depict that DPSO-FOHA II outperforms DPSO-FOHA I and another state of art methods in terms of PSNR, SSIM, fitness function and computational time.

关键词： image segmentation Fractional calculus Convergence Particle swarm optimization Simulated annealing Algorithm design and analysis

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13th International conference on Informatics in Control, Automation and Robotics, ICINCO 2016

13th International Conference on Informatics in Control, Aut...

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13th International conference on Informatics in Control, Automation and Robotics, ICINCO 2016

ISBN: (纸本)9783319550107

The proceedings contain 21 papers. The special focus in this conference is on Informatics in Control, Automation and Robotics. The topics include: Parameter identification and model-based control of redundantly actuated, non-holonomic, omnidirectional vehicles;passivity-based control design and experiments for a rolling-balancing system;time-optimal paths for a robotic batting task;an adaptive terminal sliding mode guidance law for head pursuit interception with impact angle considered;kinematic and dynamic approaches in gait optimization for humanoid robot locomotion;identification and control of the waelz process using infrared image processing;modeling and calibrating triangulation lidars for indoor applications;a comparison of discretization methods for parameter estimation of nonlinear mechanical systems using extended kalman filter: Symplectic versus classical approaches;dynamics calibration and real-time state estimation of a redundant flexible joint robot based on encoders and gyroscopes;visual servoing path-planning with elliptical projections;Mathematical model for the output signal’s energy of an ideal DAC in the presence of clock jitter;stochastic integration filter with improved state estimate mean-square error computation;fractional models of lithium-ion batteries with application to state of charge and ageing estimation;co-operation of biology related algorithms for solving opinion mining problems by using different term weighting schemes;bifurcation analysis and active control of surge and rotating stall in axial flow compressors via passivity;task controller for performing remote centre of motion;toward an automatic fongbe speech recognition system: Hierarchical mixtures of algorithms for phoneme recognition;spatial fusion of different imaging technologies using a virtual multimodal camera.

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Embedded system design for automatic screening of snore during nocturnal audio recording

Embedded system design for automatic screening of snore duri...

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International conference on Audio, Language and image processing, ICALIP

作者： Limin Hou Qiang Pan Chen Wang School of Communication and Information Engineering Shanghai University Shanghai

ISBN: (纸本)9781509006557

Automatic snore detection system based on ARM processor has been designed in our work that only uses single microphone recording snore sound. It can assist a noninvasive and portable diagnosis for sleep apnea-hypopnea syndrome (SAHS) based on digital signal processing. The 32-bit microcontroller STM32F407 is selected as main hardware of embedded system. To make full use of the ARM resources, SAHS snore diagnosis task is decomposed into several steps with different priority. Real-time screening of snore is implemented based on recording of nocturnal snore sound. Meanwhile the SAHS snore and simple snore are discriminated by the Earth mover's distance (EMD) algorithm which is online completed. Therefore, apnea-hypopnea index (AHI: the average number of apneic events per hour of sleep) is calculated and screening result is obtained.

关键词： Sleep apnea Acoustics Microphones Hardware signal processing algorithms Embedded systems Monitoring

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Optimizing interconnection complexity for realizing fixed permutation in data and signal processing algorithms

Optimizing interconnection complexity for realizing fixed pe...

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International conference on Field Programmable Logic and Applications

作者： Ren Chen Viktor K. Prasanna Ming Hsieh Department of Electrical Engineering University of Southern California Los Angeles USA

In hardware implementation of several widely used data and signal processing algorithms, data permutations need to be performed between the consecutive computation stages consisting of parallel computational units. Recently, some highly data parallel streaming architectures for data permutation have been proposed to achieve high throughput. However, the interconnection complexity of these designs increases dramatically with the problem size and data parallelism. In this paper, we develop a hardware structure to perform data permutation with optimized interconnection complexity, denned as the interconnection area per throughput. We propose a novel design technique such that the required interconnection logic is highly reduced for realizing a fixed permutation on streaming data. Our experimental results show that the proposed design technique reduces interconnection complexity by 27.3% to 75.8%, and improves the throughput by 5.3%~129% and the energy efficiency by 1.2×~3.5× compared with the state-of-the-art.

关键词： Multiplexing

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19th International conference on Systems Science, ICSS 2016

19th International Conference on Systems Science, ICSS 2016

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19th International conference on Systems Science, ICSS 2016

ISBN: (纸本)9783319489438

The proceedings contain 30 papers. The special focus in this conference is on Applications of Machine Learning, Cloud Computing, Transportation, Multi-Robot Systems and Uncertain Systems. The topics include: Maximum likelihood estimation and optimal coordinates;relation recognition problems and algebraic approach to their solution;prediction of power load demand using modified dynamic weighted majority method;estimating cluster population;evaluation of particle swarm optimisation for medical image segmentation;automated processing of micro-ct scans using descriptor-based registration of 3d images;topic modeling based on frequent sequences graphs;Gaussian process regression with categorical inputs for predicting the blood glucose level;automated information extraction and classification of matrix-based questionnaire data;evaluating raft in docker on kubernetes;performance evaluation of MPTCP transmission of large data objects in computing cloud;a decentralized system for load balancing of containerized microservices in the cloud;layered reconfigurable architecture for autonomous cooperative UAV computing systems;a practical verification of protocol and data format negotiation methods in ComSS platform;reactive dynamic assignment for a bi-dimensional traffic flow model;comparing signal setting design methods through emission and fuel consumption performance indicators;GSOM traffic flow models for networks with information;designing mass-customized service subject to public grid-like network constraints;sensing feedback for the control of multi-joint prosthetic hand;spatio-temporal clustering and forecasting method for free-floating bike sharing systems;comparison of algorithms for constrained multi-robot task allocation and a joint problem of track closure planning and train run rescheduling with detours.

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High spatiotemporal cineMRI films using compressed sensing for acquiring articulatory data

High spatiotemporal cineMRI films using compressed sensing f...

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European signal processing conference

作者： Benjamin Elie Yves Laprie Pierre Andre Vuissoz Freddy Odille LORIA INRIA/CNRS/université de Lorraine IADI Université de Lorraine Nancy France

ISBN: (纸本)9781509018918

The paper presents a method to acquire articulatory data from a sequence of MRI images at a high framerate. The acquisition rate is enhanced by partially collecting data in the kt-space. The combination of compressed sensing technique, along with homodyne reconstruction, enables the missing data to be recovered. The good reconstruction is guaranteed by an appropriate design of the sampling pattern. It is based on a pseudo-random Cartesian scheme, where each line is partially acquired for use of the homodyne reconstruction, and where the lines are pseudo-randomly sampled: central lines are constantly acquired and the sampling density decreases as the lines are far from the center. Application on real speech data show that the framework enables dynamic sequences of vocal tract images to be recovered at a framerate higher than 30 frames per second and with a spatial resolution of 1 mm. A method to extract articulatory data from contour identification is presented. It is intended, in fine, to be used for the creation of a large database of articulatory data.

关键词： image reconstruction Magnetic resonance imaging Speech Coils Compressed sensing Europe signal processing Compressed sensing image reconstruction Coils signal processing Speech Magnetic Resonance Imaging acquisition rate lines lines large database

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design and Implementation of a High Speed Digital FIR Filter using Unfolding 7

Design and Implementation of a High Speed Digital FIR Filter...

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7th IEEE Power India International conference (PIICON)

作者： Thakral, Shilpa Goswami, Divya Sharma, Ritu Prasanna, Challa Krishna Joshi, Amit Mahesh Malaviya Natl Inst Technol Dept Elect & Commun Engn Jaipur Rajasthan India

ISBN: (纸本)9781467389624

The paper presents the design and implementation of a high speed digital Finite Impulse Response (FIR) filter using unfolding transformation technique. FIR Filter has widespread applications in signal processing such as image processing, bio-medical signal processing, high speed communication systems, noise elimination and many more. The speed of FIR filter can be improved with high speed vedic multiplier and with low propagation delay carry increment adder. In the proposed design, the FIR filter is unfolded by a factor 3 which results in scheduling the filter to a smaller iteration period and along with this throughput of the filter also increases. The propagation delay is reduced to almost three times in FIR filter by using faster adder, high speed multiplier and unfolding transformation technique. We have synthesized the proposed design on Xilinx ISE 14.7 with Virtex IV FPGA family. The obtained results also confirm the faster performance of the FIR filter.

关键词： Carry Increment adder FIR filter Propagation delay Unfolding Vedic multiplier

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ROW-COLUMN TRANSFORMS: LOW-COMPLEXITY APPROXIMATION OF OPTIMAL NON-SEPARABLE TRANSFORMS

ROW-COLUMN TRANSFORMS: LOW-COMPLEXITY APPROXIMATION OF OPTIM...

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IEEE International conference on image processing

作者： Hilmi E. Egilmez Onur G. Guleryuz Jana Ehmann Sehoon Yea Signal & Image Processing Institute University of Southern California LG Electronics Mobile Research Lab

ISBN: (纸本)9781467399623

This paper introduces row-column transforms (RCTs) which are 2-D non-separable transforms defined with the aid of a set of 1-D linear transforms and a basis ordering permutation. We propose a novel method for the design of row-column transforms that approximate desired complex transforms (such as KLTs, SOTs, etc.) so that most of the performance of the approximated transforms is retained at significantly reduced complexity. Given a non-separable block transform of interest, our method designs an RCT by (i) optimizing a set of 1-D transforms applied to rows and columns of the signal block and (ii) finding the best transform coefficient ordering permutation. Our experimental results show that optimized RCTs closely approach the compression performance of the desired non-separable transforms while retaining the computational complexity of separable transforms.

关键词： Transform coding Row-column transforms Video compression Separable Optimization Hungarian method transform coding Video compression Transform Separable separable transform block transform

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