Optical edge-projection method for three dimensional profilometry
A novel optical edge-projection method is proposed for surface contouring of an object with low reflectivity. A structured light edge is projected onto a dark surface, and the image is captured by a CCD camera. The object contour is evaluated with an active triangular p...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/92034 http://hdl.handle.net/10220/6471 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | A novel optical edge-projection method is proposed for surface contouring of an object with low reflectivity. A
structured light edge is projected onto a dark surface, and the image is captured by a CCD camera. The
object contour is evaluated with an active triangular projection algorithm, and one obtains a whole-field
three-dimensional contour of the object by scanning the optical edge over the entire object surface. The proposed
method is applied to a black nonreflective object made from woven carbon fiber and is also applied to
measure the profile of a small object (a coin). The results show that an accurate profile of the specimen can
be obtained. |
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