A novel technique using projected fringe profilometry with pulsed illuminations for finding the absolute shape of a dynamic object, which is vibrating with high frequency, is proposed. The proposed method can accurately describe the observed 3D shape at a sequence of time. Even though the tested object vibrates up to 10K-Hz, the proposed method can accurately describe the observed 3D shape at any specific time. Depth accuracy better than one part in ten thousandths of the field of view can be achieved even with excessive image noises. Furthermore, the light source is temporally incoherent and spatially coherent, providing a speckle-free and a large depth-of-focus illumination. Thus, a highly accurate, non-scanning projected fringe profilometer with large depth measuring range for dynamic measurements can be realized.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0719107-011607 |
| Date | 19 July 2007 |
| Creators | Huang, Jun-shan |
| Contributors | Ming-Chi Chou, Wei-Hung Su, Che-Hsin Lin |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719107-011607 |
| Rights | unrestricted, Copyright information available at source archive |
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