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FPGA Based Compact and Efficient Full Image Buffering for Neighborhood OperationsKAZMI, M.   , AZIZ, A. , AKHTAR, P. , KUNDI, D.-S. |
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Author keywords
buffer storage, convolver, field programmable gate array, image processing, image storage
References keywords
processing(15), fpga(13), systems(11), image(11), time(10), real(10), implementation(7), design(7), vision(6), hardware(6)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2015-02-28
Volume 15, Issue 1, Year 2015, On page(s): 95 - 104
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2015.01014
Web of Science Accession Number: 000352158600014
SCOPUS ID: 84924812669
Abstract
Image processing systems based on neighborhood operations i.e. Neighborhood Processing Systems (NPSs) are computationally expensive and memory intensive. Field Programmable Gate Array (FPGA) based parallel processing architectures accelerate calculations of NPS provided if they have fast external-memory data access by using on-chip data buffers. The conventional data buffers namely full Row Buffers (RBs) implemented with FPGA embedded memory resources i.e. Block RAMs (BRAMs) are resource inefficient. It makes overall NPS implementation on FPGA expensive and infeasible especially for resource-constraint environment. This paper presents compact and efficient image buffering architecture with an additional feature of pre-fetching. Proposed design fits in minimal BRAMs by using small yet efficient Main Control Unit (MCU). Its optimal multi-rated BRAM data accessing technique reduces BRAM cost to provide multiple pixels of pre-fetched data/clock to NPS in a fixed pattern. It controls and synchronizes BRAMs operations to attain throughput of 1 clock/pixel. Thus our buffer architecture with 66% reduction in BRAM requirement as compared to conventional RBs is capable to support buffering for real time systems with high resolution (1080x1920@62fps). Therefore proposed buffer architecture can suitably replace conventional RB in any real time NPS application. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
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Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
