Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns
A phase unwrapping method for phase-shifting projected fringe profilometry is presented. It did not require additional projections to identify the fringe orders. The pattern used for the phase extraction could be used for phase unwrapping directly. By spatially encoding the fringe patterns that were...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/8/9/362 |
| _version_ | 1797517554277679104 |
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| author | Nai-Jen Cheng Wei-Hung Su |
| author_facet | Nai-Jen Cheng Wei-Hung Su |
| author_sort | Nai-Jen Cheng |
| collection | DOAJ |
| description | A phase unwrapping method for phase-shifting projected fringe profilometry is presented. It did not require additional projections to identify the fringe orders. The pattern used for the phase extraction could be used for phase unwrapping directly. By spatially encoding the fringe patterns that were used to perform the phase-shifting technique with binary contrasts, fringe orders could be discerned. For spatially isolated objects or surfaces with large depth discontinuities, unwrapping could be identified without ambiguity. Even though the surface color or reflectivity varied periodically with position, it distinguished the fringe order very well. |
| first_indexed | 2024-03-10T07:18:09Z |
| format | Article |
| id | doaj.art-39fca803bdd6449cbd7a4c3a6766118e |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T07:18:09Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-39fca803bdd6449cbd7a4c3a6766118e2023-11-22T14:50:17ZengMDPI AGPhotonics2304-67322021-08-018936210.3390/photonics8090362Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded PatternsNai-Jen Cheng0Wei-Hung Su1Institute of Photonics Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, TaiwanDepartment of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, TaiwanA phase unwrapping method for phase-shifting projected fringe profilometry is presented. It did not require additional projections to identify the fringe orders. The pattern used for the phase extraction could be used for phase unwrapping directly. By spatially encoding the fringe patterns that were used to perform the phase-shifting technique with binary contrasts, fringe orders could be discerned. For spatially isolated objects or surfaces with large depth discontinuities, unwrapping could be identified without ambiguity. Even though the surface color or reflectivity varied periodically with position, it distinguished the fringe order very well.https://www.mdpi.com/2304-6732/8/9/362fringe projectionphase-shiftingphase unwrappingbinary-encoded patterns |
| spellingShingle | Nai-Jen Cheng Wei-Hung Su Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns Photonics fringe projection phase-shifting phase unwrapping binary-encoded patterns |
| title | Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns |
| title_full | Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns |
| title_fullStr | Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns |
| title_full_unstemmed | Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns |
| title_short | Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns |
| title_sort | phase shifting projected fringe profilometry using binary encoded patterns |
| topic | fringe projection phase-shifting phase unwrapping binary-encoded patterns |
| url | https://www.mdpi.com/2304-6732/8/9/362 |
| work_keys_str_mv | AT naijencheng phaseshiftingprojectedfringeprofilometryusingbinaryencodedpatterns AT weihungsu phaseshiftingprojectedfringeprofilometryusingbinaryencodedpatterns |