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| Presentation | 2010-09-29 11:10 In-place algorithm for Erasing a Component in a Binary Image Tetsuo Asano (JAIST)  COMP2010-26 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Removing noises in a given binary image is one of common operations. A generalization of the operation is to erase an arbitrarily specified component by reversing pixel values in the component. This paper shows that this operation is done without using any data structure like a stack or queue, or more exactly using only constant extra memory (of $O(\log n)$ bits for an image of $n$ pixels) in $O(m \log m)$ time for a component consisting of $m$ pixels. This is an in-place algorithm, but the image matrix cannot be used as work space since it has just one bit for each pixel. Whenever we flip a pixel value in a target component, the component shape is also deformed, which causes some difficulty. An idea for our constant work space algorithm is a deformation of a component which keeps its connectivity. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | constant work space algorithm / in-place algorithm / binary image / component / connectivity / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 214, COMP2010-26, pp. 17-23, Sept. 2010. | |
| Paper # | COMP2010-26 | |
| Date of Issue | 2010-09-22 (COMP) | |
| 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 | COMP2010-26 |
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| Conference Information | |
| Committee | COMP |
| Conference Date | 2010-09-29 - 2010-09-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagaoka Univ. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | COMP |
| Conference Code | 2010-09-COMP |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | In-place algorithm for Erasing a Component in a Binary Image |
| Sub Title (in English) | |
| Keyword(1) | constant work space algorithm |
| Keyword(2) | in-place algorithm |
| Keyword(3) | binary image |
| Keyword(4) | component |
| Keyword(5) | connectivity |
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| 1st Author's Name | Tetsuo Asano |
| 1st Author's Affiliation | JAIST (JAIST) |
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| Speaker | Author-1 |
| Date Time | 2010-09-29 11:10:00 |
| Presentation Time | 35 minutes |
| Registration for | COMP |
| Paper # | COMP2010-26 |
| Volume (vol) | vol.110 |
| Number (no) | no.214 |
| Page | pp.17-23 |
| #Pages | 7 |
| Date of Issue | 2010-09-22 (COMP) |
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