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Illumination-invariant phase-shifting algorithm for three-dimensional profilometry of a moving object
| Content Provider | Semantic Scholar |
|---|---|
| Author | Deng, Fuqin Liu, Chang Sze, Wuifung Deng, Jiangwen Fung, Kenneth S. M. Leung, Wing Hong Lam, Edmund Y. |
| Copyright Year | 2012 |
| Abstract | Abstract. Uneven illumination is a common problem in practical optical systems designed for machine vision applications, and it leads to significant errors when phase-shifting algorithms (PSA) are used to reconstruct the surface of a moving object. We propose an illumination-reflectivity-focus model to characterize this uneven illumination effect on phase-measuring profilometry. With this model, we separate the illumination factor effectively and consider the phase reconstruction from an optimization perspective. Furthermore, we formulate an illumination-invariant phase-shifting algorithm (II-PSA) to reconstruct the surface of a moving object under an uneven illumination environment. Experimental results show that it can improve the reconstruction quality both visually and numerically. |
| File Format | PDF HTM / HTML |
| DOI | 10.1117/1.OE.51.9.097001 |
| Volume Number | 51 |
| Alternate Webpage(s) | http://hub.hku.hk/bitstream/10722/158783/1/content.pdf |
| Alternate Webpage(s) | https://doi.org/10.1117/1.OE.51.9.097001 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
