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| Presentation | 2009-05-15 13:10 Real-time processing of local contrast enhancement on FPGA Kentaro Kokufuta, Tsutomu Maruyama (Univ. of Tsukuba)  RECONF2009-14 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Adaptive histogram equalization (AHE) is a method for the local contrast enhancement. AHE computes several histograms of intensity values, each corresponding to a distinct region of the image, and uses them to redistribute the intensity values. AHE is very computationally intensive and not acceptable for most applications.In this paper, we propose a method for real-time computation of AHE using an FPGA. In our system, a histogram is generated for each pixel in a image, and the intensity of the pixel is remapped using the histogram. The computational complexity of this approach is very high, but it can generate smooth enhanced images without using interpolation techniques. By reusing partial histograms by temporarily storing them in on-chip memory banks, and by adding/subtracting all bins in the histograms in parallel, we can achieve real-time processing of HD images using an FPGA. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | FPGA / image processing / contrast enhancement / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 26, RECONF2009-14, pp. 79-84, May 2009. | |
| Paper # | RECONF2009-14 | |
| Date of Issue | 2009-05-07 (RECONF) | |
| 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 | RECONF2009-14 |
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| Conference Information | |
| Committee | RECONF |
| Conference Date | 2009-05-14 - 2009-05-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RECONF |
| Conference Code | 2009-05-RECONF |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Real-time processing of local contrast enhancement on FPGA |
| Sub Title (in English) | |
| Keyword(1) | FPGA |
| Keyword(2) | image processing |
| Keyword(3) | contrast enhancement |
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| 1st Author's Name | Kentaro Kokufuta |
| 1st Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
| 2nd Author's Name | Tsutomu Maruyama |
| 2nd Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
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| Speaker | Author-1 |
| Date Time | 2009-05-15 13:10:00 |
| Presentation Time | 30 minutes |
| Registration for | RECONF |
| Paper # | RECONF2009-14 |
| Volume (vol) | vol.109 |
| Number (no) | no.26 |
| Page | pp.79-84 |
| #Pages | 6 |
| Date of Issue | 2009-05-07 (RECONF) |
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