One 3D measurement method is laser scanning. By projecting and photographing a laser line, the centre line coordinates of the laser can be obtained with centre line detection methods and then be used to generate 3D model of the scanned object. This thesis compares three centre line detection algorithms with respect to their utility for the purpose of 3D reconstruction. The investigated algorithms were Steger’s method, Gaussian fitting and Centre of Mass. The algorithms were evaluated regarding noise sensitivity and their ability to detect jagged laser lines. It was concluded that Steger’s method was the most noise resistant, but less accurate than the others when the jagged line was at an acute angle. The performance of the Gaussian fitting and Centre of Mass algorithms was relatively equal for all investigated test cases.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:liu-168582 |
| Date | January 2020 |
| Creators | Mattsson, Mirjam |
| Publisher | Linköpings universitet, Beräkningsmatematik, Linköpings universitet, Tekniska fakulteten |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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