检索结果-内蒙古大学图书馆

18th IEEE International Conference on image processing (ICIP)

作者： Gong, Minglun Cheng, Li Mem Univ Newfoundland St John NF A1C 5S7 Canada ASTAR Bioinformat Inst Singapore Singapore

ISBN: (纸本)9781457713033

Many existing background subtraction approaches model background color only and detect foreground as outliers, and hence may confuse background changes or noises with true foreground. We present a novel algorithm that utilizes motion cues computed from an optical flow algorithm. The additional motion information allows aligning moving foreground objects over time so that models can be built for foreground as well. It also facilities background (and foreground) modeling since both color and motion cues can be utilized. In practice, our GPU implementation is able to process QVGA-sized video sequences at 39.3 FPS on a laptop. Quantitative evaluation on standard testbeds demonstrate the competitive performance of our approach.

关键词： Color Computational modeling Conferences Graphics processing unit image color analysis Real time systems

来源：评论

学校读者我要写书评

暂无评论

Proceedings of the 2011 Conference on Design and Architectures for signal and image processing, DASIP 2011

Proceedings of the 2011 Conference on Design and Architectur...

引用

2011 Conference on Design and Architectures for signal and image processing, DASIP 2011

ISBN: (纸本)9781457706196

The proceedings contain 45 papers. The topics discussed include: performance evaluation of an automotive distributed architecture based on HPAV communication protocol using a transaction level modeling approach;design of a processor optimized for syntax parsing in video decoders;fast and accurate hybrid power estimation methodology for embedded systems;acceleration of image reconstruction in 3D ultrasound computer tomography: an evaluation of CPU, GPU and FPGA computing;DFG implementation on multi GPU cluster with computation-communication overlap;graphic rendering application profiling on a shared memory MPSoC architecture;pilot studies of wireless sensor networks: practical experiences;efficient FFT pruning algorithm for non-contiguous OFDM systems;designing processors using MAsS, a modular and lightweight instruction-level exploration tool;and optimization methodologies for complex FPGA-based signal processing systems with CAL.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Proceedings - 2011 International Conference on Embedded Computer systems: Architectures, modeling and simulation, IC-SAMOS 2011

Proceedings - 2011 International Conference on Embedded Comp...

引用

2011 11th International Conference on Embedded Computer systems: Architectures, modeling and simulation, IC-SAMOS 2011

ISBN: (纸本)9781457708008

The proceedings contain 51 papers. The topics discussed include: methods for design and implementation of dynamic signal processing systems;supercomputing: past, present, and a possible future;on STM concurrency control for multicore embedded real-time software;accelerating collective communication in message passing on manycore system-on-chip;on the impact of dynamic task scheduling in heterogeneous MPSoCs;skeleton-based automatic parallelization of image processing algorithms for GPUs;power adaptive computing system design in energy harvesting environment;Smart Cache: a self adaptive cache architecture for energy efficiency;power proportional characteristics of an energy manager for web clusters;thermal optimization for micro-architectures through selective block replication;and design metrics and visualization techniques for analyzing the performance of MOEAs in DSE.

关键词：

来源：评论

学校读者我要写书评

暂无评论

modeling and simulation for Defense systems and Applications VI

Modeling and Simulation for Defense Systems and Applications...

引用

modeling and simulation for Defense systems and Applications VI

ISBN: (纸本)9780819486349

The proceedings contain 19 papers. The topics discussed include: a high performance computing framework for physics-based modeling and simulation of military ground vehicles;rolling partial prefix-sums to speedup evaluation of uniform and affine recurrence equations;accelerating sparse linear algebra using graphics processing units;high-level GPU computing with jacket for MATLAB and C/C++;roles and assessment methods for models of sensor data exploitation algorithms;multi-frame atmospheric compensation under moving camera conditions;power versus performance tradeoffs of GPU-accelerated backprojection-based synthetic aperture radar image formation;a hardware-in-the-loop simulation program for ground-based radar;an agile acquisition decision-support workbench for evaluating ISR effectiveness;modeling of hybrid organic/inorganic dual RF-photonic slot waveguide modulator;and improved representation of situational awareness within a dismounted small combat unit constructive simulation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

LEARNING DICTIONARIES FOR LOCAL SPARSE CODING IN image CLASSIFICATION

LEARNING DICTIONARIES FOR LOCAL SPARSE CODING IN IMAGE CLASS...

引用

45th Asilomar Conference on signals, systems and Computers (ASILOMAR)

作者： Thiagarajan, Jayaraman J. Spanias, Andreas Arizona State Univ Sch ECEE SenSIP Ctr Tempe AZ 85287 USA

ISBN: (纸本)9781467303231

Low dimensional embedding of data samples lying on a manifold can be performed using locally linear modeling. By incorporating suitable locality constraints, sparse coding can be adapted to modeling local regions of a manifold. This has been coupled with the spatial pyramid matching algorithm to achieve state-of-the-art performance in object recognition. In this paper, we propose an algorithm to learn dictionaries for computing local sparse codes of descriptors extracted from image patches. The algorithm iterates between a local sparse coding step and an update step that searches for a better dictionary. evaluation of the local sparse code for a data sample is simplified by first estimating its neighbors using the proposed distance metric and then computing the minimum l(1) solution using only the neighbors. The proposed dictionary update ensures that the neighborhood of a training sample is not changed from one iteration to the next. simulation results demonstrate that the sparse codes computed using the proposed dictionary achieve improved classification accuracies when compared to using a K-means dictionary with standard image datasets.

关键词： Local sparse codes sparse representations dictionary learning linear classifiers

来源：评论

学校读者我要写书评

暂无评论

Analysis of the Multimode Feedhorn Concept for Multichannel SAR-GMTI

引用

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 2011年第10期49卷 3611-3621页

作者： Gierull, Christoph H. Def Res & Dev Canada Ottawa ON K1A 0Z4 Canada

This paper presents the theoretical and experimental performance evaluation of a novel and innovative concept to add a multichannel ground moving target indication (GMTI) capability to a synthetic aperture radar (SAR) reflector antenna with a standard single feed. This approach exploits the capability to achieve a phase center displacement by combining signals obtained from different electromagnetic excitation modes of the feedhorn. While, in the past, this so-called multimode concept has been mainly analyzed in simulation and by various antenna laboratory measurements, several flight experiments have been recently conducted to verify and demonstrate its GMTI performance. The theoretical and experimental analysis provides qualitative and quantitative insights into the effectiveness of multimode SAR-GMTI applications, such as the SAR image-based along-track interferometry (ATI) or post-Doppler GMTI approaches based on space-time adaptive processing. In addition, it introduces practical lessons learned, along with an example of the detection and parameter estimation for a large vessel using ATI. This paper finishes with an examination of the expected performance improvement when the transmitted modes are alternated between subsequent pulses. This toggling results in a time-multiplexed three-channel GMTI system with significantly enhanced estimation performance.

关键词： Electronic switching systems radar detection radar signal analysis radar velocity measurement synthetic aperture radar (SAR) traffic information systems

来源：评论

学校读者我要写书评

暂无评论

performance evaluation of an automotive distributed architecture based on HPAV communication protocol using a transaction level modeling approach

Performance evaluation of an automotive distributed architec...

引用

Conference on Design and Architectures for signal and image processing

作者： Takieddine Majdoub Sébastien Le Nours Olivier Pasquier Fabienne Nouvel IREENA EA 1770 Polytech-Nantes University of Nantes Nantes France INSA Rennes IETR UMR Rennes France

Due to increasing complexity of communication infrastructures in the automotive domain, reliable models are necessary in order to assist designers in the development process of networked embedded systems. In this context, transaction level modeling, supported by languages as SystemC, is a promising solution to assess performances of networked architectures with a good compromise between accuracy and simulation speed. This article presents the application of a specific modeling approach for performance evaluation of a networked embedded system inspired from the automotive domain. The considered approach is illustrated by the modeling of a video transmission system made of three electronic controller units and based on a specific power line communication protocol. The created model incorporates description of various communication layers and simulation of the model allows evaluation of time properties and memory cost inferred.

关键词： Computer architecture Protocols IP networks Time division multiple access Automotive engineering Embedded systems Load modeling

来源：评论

学校读者我要写书评

暂无评论

GPU Computing Gems Emerald Edition 1

引用

丛书名： Applications of GPU Computing Series

2011年

作者： Wen-mei W. Hwu

ISBN: (数字)9780123849892

ISBN: (纸本)9780123849885

GPU Computing Gems Emerald Edition offers practical techniques in parallel computing using graphics processing units (GPUs) to enhance scientific research. The first volume in Morgan Kaufmann's Applications of GPU Computing Series, this book offers the latest insights and research in computer vision, electronic design automation, and emerging data-intensive applications. It also covers life sciences, medical imaging, ray tracing and rendering, scientific simulation, signal and audio processing, statistical modeling, video and image processing. This book is intended to help those who are facing the challenge of programming systems to effectively use GPUs to achieve efficiency and performance goals. It offers developers a window into diverse application areas, and the opportunity to gain insights from others' algorithm work that they may apply to their own projects. Readers will learn from the leading researchers in parallel programming, who have gathered their solutions and experience in one volume under the guidance of expert area editors. Each chapter is written to be accessible to researchers from other domains, allowing knowledge to cross-pollinate across the GPU spectrum. Many examples leverage NVIDIA's CUDA parallel computing architecture, the most widely-adopted massively parallel programming solution. The insights and ideas as well as practical hands-on skills in the book can be immediately put to use. Computer programmers, software engineers, hardware engineers, and computer science students will find this volume a helpful resource. For useful source codes discussed throughout the book, the editors invite readers to the following website:

关键词： Computer graphics Imaging systems Graphics processing units--Programming image processing--Digital techniques

来源：评论

学校读者我要写书评

暂无评论

Analysis of the Multimode Feedhorn Concept for Multichannel SAR-GMTI

Analysis of the Multimode Feedhorn Concept for Multichannel ...

引用

8th European Conference on Synthetic Aperture Radar (EUSAR)

作者： Gierull, Christoph H. Def Res & Dev Canada Ottawa ON K1A 0Z4 Canada

关键词： Electronic switching systems radar detection radar signal analysis radar velocity measurement synthetic aperture radar (SAR) traffic information systems

来源：评论

学校读者我要写书评

暂无评论

A perfomance comparison study between synchronous and asynchronous FPGA for spike based systems. Under the AER synthetic generation

A perfomance comparison study between synchronous and asynch...

引用

作者： Paz-Vicente, Rafael Cerezuela-Escudero, Elena Dominguez-Morales, Manuel Jimenez-Fernandez, Angel Linares-Barranco, Alejandro Jimenez-Moreno, Gabriel Arquitectura Y Tecnología de Computadores Universidad de Sevilla Av. Reina Mercedes s/n 41012-Sevilla Spain

ISBN: (纸本)9781617823091

Neuromorphic engineering tries to mimic biology in information processing. Address-Event Representation (AER) is a neuromorphic communication protocol for spiking neurons between different layers. AER bio-inspired image sensors are called "retina". This kind of sensors measurees visual information not based on frames from real life and generates corresponding events. In this paper we provide an alternative, based on cheap FPGA, to these image sensors that takes images provided by an analog video source (video composite signal), digitalizes it and generates AER streams for testing purposes. This design was initially developed for Xilinx Spartan FPGA. In this paper we present a comparison study between synthesis of this design for Xilinx Spartan, Virtex FPGA and Achronix asynchronous FPGA, measuring the maximum performance reached in each case. © 2011 Society for modeling & Simu.

关键词： Field programmable gate arrays (FPGA)

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：