| Presentation | 2021-03-04 A Proposal of 3-Level Error Diffusion Method by Using Piecewise-Linear Conversion Shuma Takeda, Yoshiaki Ueda, Noriaki Suetake, Eiji Uchino, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Error Diffusion / Multi-Level Halftoning |
| Paper # | SIS2020-42 |
| Date of Issue | 2021-02-25 (SIS) |
| Conference Information | |
| Committee | SIS |
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| Conference Date | 2021/3/4(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Soft Computing, etc. |
| Chair | Noriaki Suetake(Yamaguchi Univ.) |
| Vice Chair | Tomoaki Kimura(Kanagawa Inst. of Tech.) / Naoto Sasaoka(Tottori Univ.) |
| Secretary | Tomoaki Kimura(Kindai Univ.) / Naoto Sasaoka(National Inst. of Tech., Ube College) |
| Assistant | Yukihiro Bandoh(NTT) / Soh Yoshida(Kansai Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Info-Media Systems |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2021-03-04 |
| Paper # | SIS2020-42 |
| Volume (vol) | vol.120 |
| Number (no) | SIS-415 |
| Page | pp.pp.39-44(SIS), |
| #Pages | 6 |
| Date of Issue | 2021-02-25 (SIS) |