| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2021-02-18 15:15 A study on avoiding phase-retrieval stagnation for ptychography Ryo Ozawa (Muroran IT), Yosuke Maehara (DOWELL), Asahi Takaoka, Hiroyuki Shioya (Muroran IT)  ITS2020-31 IE2020-45 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Diffractive imaging is a method of reconstructing an image from an observed diffraction pattern, in which a computer substitutes the function of lenses. By irradiating an object with radiation or electron beam, the Fourier intensity of the object is observed, but not the Fourier phase. Therefore, GS algorithm has been used to retrieve the Fourier phase. The algorithm repeats imposition of real / inverse constraints and Fourier transform. Ptychography enables imaging of objects which are larger than the beam diameter and complex objects. This method retrieves Fourier phases in multiple regions of an object with each observed Fourier intensity if the overlap ratio is sufficient. However, when the overlap ratio is insufficient, retrieving Fourier phase is stagnant. In this paper, we propose a local search method on ptychography to avoid the stagnation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Diffractive imaging / Ptychography / Complex phase retrieval / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 364, IE2020-45, pp. 25-30, Feb. 2021. | |
| Paper # | IE2020-45 | |
| Date of Issue | 2021-02-11 (ITS, IE) | |
| 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 | ITS2020-31 IE2020-45 |
|
| Conference Information | |
| Committee | IE ITS ITE-MMS ITE-ME ITE-AIT |
| Conference Date | 2021-02-18 - 2021-02-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image Processing, etc. |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2021-02-IE-ITS-MMS-ME-AIT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on avoiding phase-retrieval stagnation for ptychography |
| Sub Title (in English) | |
| Keyword(1) | Diffractive imaging |
| Keyword(2) | Ptychography |
| Keyword(3) | Complex phase retrieval |
| Keyword(4) | |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Ryo Ozawa |
| 1st Author's Affiliation | Muroran Institute of Technology (Muroran IT) |
| 2nd Author's Name | Yosuke Maehara |
| 2nd Author's Affiliation | DOWELL Corporation (DOWELL) |
| 3rd Author's Name | Asahi Takaoka |
| 3rd Author's Affiliation | Muroran Institute of Technology (Muroran IT) |
| 4th Author's Name | Hiroyuki Shioya |
| 4th Author's Affiliation | Muroran Institute of Technology (Muroran IT) |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2021-02-18 15:15:00 |
| Presentation Time | 25 minutes |
| Registration for | IE |
| Paper # | ITS2020-31, IE2020-45 |
| Volume (vol) | vol.120 |
| Number (no) | no.363(ITS), no.364(IE) |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2021-02-11 (ITS, IE) |
[Return to Top Page]