Advanced phase shifting algorithms: development and evaluation
Phase extraction is extremely important in optical metrology, for which, many phase-shifting algorithms who are either with known phase shifts and based on simple triangular identities (abbreviated as kPSA) or with unknown phase shifts and based on advanced techniques (abbreviated as uPSA) have been...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
| Published: |
Nanyang Technological University
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/159437 |
| _version_ | 1811679417896796160 |
|---|---|
| author | Chen, Yuchi |
| author2 | Qian Kemao |
| author_facet | Qian Kemao Chen, Yuchi |
| author_sort | Chen, Yuchi |
| collection | NTU |
| description | Phase extraction is extremely important in optical metrology, for which, many phase-shifting algorithms who are either with known phase shifts and based on simple triangular identities (abbreviated as kPSA) or with unknown phase shifts and based on advanced techniques (abbreviated as uPSA) have been developed; followed by numerous development and evaluation studies. However, these works are mainly for the kPSAs, and only few are for the uPSAs. Therefore, in this thesis, we focused on the following issues of the existing uPSAs, including (i) the unclear restrictions, (ii) the unoptimized accuracy, (iii) the unpredictable performance, and (iv) the unaccelerated speed; and proposed multiple novel uPSAs who have superior accuracy, fewer restrictions, better predictability and faster speed. Meanwhile, we also compared the uPSAs with the kPSAs to showcase the merits of both kPSAs and uPSAs; and proposed a good-performing and restriction-free hybrid kPSA-uPSA by combining the merits of both categories. |
| first_indexed | 2024-10-01T03:08:50Z |
| format | Thesis-Doctor of Philosophy |
| id | ntu-10356/159437 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:08:50Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1594372022-06-20T02:58:12Z Advanced phase shifting algorithms: development and evaluation Chen, Yuchi Qian Kemao School of Computer Science and Engineering MKMQian@ntu.edu.sg Engineering::Computer science and engineering Phase extraction is extremely important in optical metrology, for which, many phase-shifting algorithms who are either with known phase shifts and based on simple triangular identities (abbreviated as kPSA) or with unknown phase shifts and based on advanced techniques (abbreviated as uPSA) have been developed; followed by numerous development and evaluation studies. However, these works are mainly for the kPSAs, and only few are for the uPSAs. Therefore, in this thesis, we focused on the following issues of the existing uPSAs, including (i) the unclear restrictions, (ii) the unoptimized accuracy, (iii) the unpredictable performance, and (iv) the unaccelerated speed; and proposed multiple novel uPSAs who have superior accuracy, fewer restrictions, better predictability and faster speed. Meanwhile, we also compared the uPSAs with the kPSAs to showcase the merits of both kPSAs and uPSAs; and proposed a good-performing and restriction-free hybrid kPSA-uPSA by combining the merits of both categories. Doctor of Philosophy 2022-06-20T02:58:11Z 2022-06-20T02:58:11Z 2022 Thesis-Doctor of Philosophy Chen, Y. (2022). Advanced phase shifting algorithms: development and evaluation. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/159437 https://hdl.handle.net/10356/159437 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Computer science and engineering Chen, Yuchi Advanced phase shifting algorithms: development and evaluation |
| title | Advanced phase shifting algorithms: development and evaluation |
| title_full | Advanced phase shifting algorithms: development and evaluation |
| title_fullStr | Advanced phase shifting algorithms: development and evaluation |
| title_full_unstemmed | Advanced phase shifting algorithms: development and evaluation |
| title_short | Advanced phase shifting algorithms: development and evaluation |
| title_sort | advanced phase shifting algorithms development and evaluation |
| topic | Engineering::Computer science and engineering |
| url | https://hdl.handle.net/10356/159437 |
| work_keys_str_mv | AT chenyuchi advancedphaseshiftingalgorithmsdevelopmentandevaluation |