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| Presentation | 2021-03-04 11:30 A Proposal of 3-Level Error Diffusion Method by Using Piecewise-Linear Conversion Shuma Takeda (Yamaguchi Univ.), Yoshiaki Ueda (Fukuoka Univ.), Noriaki Suetake, Eiji Uchino (Yamaguchi Univ.)  SIS2020-42 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | It is required to convert a multigradation image into a few gradation image in order to express it in electronic papers or ink jet printers. Error diffusion is one of methods of multi-level halftoning and expresses a multigradation image with several levels. The binary image obtained by 2-level error diffusion, which excelled in gradation reproducibility, has favorable dot distribution and can express the original image naturally. However, in the case of 3-level error diffusion, dot distribution decreases in the region consisting of pixels which has the brightness near a certain intermediate quantization level and this causes the appearance of the banding artifact. On the other hand, 3-level error diffusion based on non-linear conversion can prevent from appearance of this banding artifact. Although, by increasing the dot distribution excessively, white and black pixels that do not match the brightness of the region occur. In this report, we propose the 3-level halftoning method that can prevent from appearance of the banding artifact and the occurrence of white and black pixels that do not match the brightness of the region. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Error Diffusion / Multi-Level Halftoning / / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 415, SIS2020-42, pp. 39-44, March 2021. | |
| Paper # | SIS2020-42 | |
| Date of Issue | 2021-02-25 (SIS) | |
| ISSN | 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 | SIS2020-42 |
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| Conference Information | |
| Committee | SIS |
| Conference Date | 2021-03-04 - 2021-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Soft Computing, etc. |
| Paper Information | |
| Registration To | SIS |
| Conference Code | 2021-03-SIS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposal of 3-Level Error Diffusion Method by Using Piecewise-Linear Conversion |
| Sub Title (in English) | |
| Keyword(1) | Error Diffusion |
| Keyword(2) | Multi-Level Halftoning |
| Keyword(3) | |
| Keyword(4) | |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shuma Takeda |
| 1st Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name | Yoshiaki Ueda |
| 2nd Author's Affiliation | Fukuoka University (Fukuoka Univ.) |
| 3rd Author's Name | Noriaki Suetake |
| 3rd Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 4th Author's Name | Eiji Uchino |
| 4th Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2021-03-04 11:30:00 |
| Presentation Time | 20 minutes |
| Registration for | SIS |
| Paper # | SIS2020-42 |
| Volume (vol) | vol.120 |
| Number (no) | no.415 |
| Page | pp.39-44 |
| #Pages | 6 |
| Date of Issue | 2021-02-25 (SIS) |
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