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| Presentation | 2007-10-25 14:20 New Compact and Power-Efficient Implementations of Rank-Order-Filters and Sorting Engines Using Time-Domain Technique Liem T. Nguyen, Kiyoto Ito, Tadashi Shibata (Univ. of Tokyo)  SIP2007-117 ICD2007-106 IE2007-76 Link to ES Tech. Rep. Archives: ICD2007-106 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A compact and power-efficient digital implementation of rank order filters compatible with focal-plane image processing has been developed based on a time-domain computation technique. The magnitude of an analog pixel intensity is represented as a pulse width in the pulse width modulation scheme and the rank order filtering is accomplished using simple digital adders and a binary counter. As a result, a very compact implementation comparable to analog counterparts has been achieved, while preserving the accuracy and programmability of digital implementation, this enable us to use the rank order filter as a building block in a parallel processing array. A test chip capable of performing multiple rank order filtering for up to 16 inputs was designed and fabricated in a 0.35-m standard CMOS technology. Experimental results have demonstrated the correct operation of the circuit in a low power dissipation (0.44mW at 3.3V) with a very compact core size (0.014mm2). The circuit has shown the speed performance of over 260K ranks/s at 8-bit resolution, which is more than sufficient for use at typical video frame rates. In addition, a new architecture for compact implementation of sorting engines with some modification in peripheral circuitries of the proposed rank order filtering architecture is also presented. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | rank order filter / ROF / median filter / winner-take-all / WTA / sorting / hardware implementation / parallel processing | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 287, ICD2007-106, pp. 41-46, Oct. 2007. | |
| Paper # | ICD2007-106 | |
| Date of Issue | 2007-10-18 (SIP, ICD, IE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SIP2007-117 ICD2007-106 IE2007-76 Link to ES Tech. Rep. Archives: ICD2007-106 |
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| Conference Information | |
| Committee | SIP ICD IE IPSJ-SLDM |
| Conference Date | 2007-10-25 - 2007-10-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Aidu-Higasiyama-Onsen Kuturogijuku |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ICD |
| Conference Code | 2007-10-SIP-ICD-IE-IPSJ-SLDM |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | New Compact and Power-Efficient Implementations of Rank-Order-Filters and Sorting Engines Using Time-Domain Technique |
| Sub Title (in English) | |
| Keyword(1) | rank order filter |
| Keyword(2) | ROF |
| Keyword(3) | median filter |
| Keyword(4) | winner-take-all |
| Keyword(5) | WTA |
| Keyword(6) | sorting |
| Keyword(7) | hardware implementation |
| Keyword(8) | parallel processing |
| 1st Author's Name | Liem T. Nguyen |
| 1st Author's Affiliation | University of Tokyo (Univ. of Tokyo) |
| 2nd Author's Name | Kiyoto Ito |
| 2nd Author's Affiliation | University of Tokyo (Univ. of Tokyo) |
| 3rd Author's Name | Tadashi Shibata |
| 3rd Author's Affiliation | University of Tokyo (Univ. of Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2007-10-25 14:20:00 |
| Presentation Time | 20 minutes |
| Registration for | ICD |
| Paper # | SIP2007-117, ICD2007-106, IE2007-76 |
| Volume (vol) | vol.107 |
| Number (no) | no.285(SIP), no.287(ICD), no.289(IE) |
| Page | pp.41-46 |
| #Pages | 6 |
| Date of Issue | 2007-10-18 (SIP, ICD, IE) |
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