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Semi-automatic extraction of primitive geometric entities from point clouds
Thesis (MScEng)--University of Stellenbosch, 2001.
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| Other Authors: | |
| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613963839078400 |
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| access_status_str | Open Access |
| author | Goussard, Charl Leonard |
| author2 | Basson, A. H. |
| author_browse | Basson, A. H. Goussard, Charl Leonard |
| author_facet | Basson, A. H. Goussard, Charl Leonard |
| author_sort | Goussard, Charl Leonard |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScEng)--University of Stellenbosch, 2001. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/52449 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:44:29.748Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/52449 Semi-automatic extraction of primitive geometric entities from point clouds Goussard, Charl Leonard Basson, A. H. Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. Reverse engineering Geometry, Analytic -- Solid Dissertations -- Mechanical engineering Theses -- Mechanical engineering Thesis (MScEng)--University of Stellenbosch, 2001. ENGLISH ABSTRACT: This thesis describes an algorithm to extract primitive geometric entities (flat planes, spheres or cylinders, as determined by the user's inputs) from unstructured, unsegmented point clouds. The algorithm extracts whole entities or only parts thereof. The entity boundaries are computed automatically. Minimal user interaction is required to extract these entities. The algorithm is accurate and robust. The algorithm is intended for use in the reverse engineering environment. Point clouds created in this environment typically have normal error distributions. Comprehensive testing and results are shown as well as the algorithm's usefulness in the reverse engineering environment. AFRIKAANSE OPSOMMING: Hierdie tesis beskryf 'n algoritme wat primitiewe geometriese entiteite (plat vlakke, sfere of silinders na gelang van die gebruiker se inset) pas op ongestruktureerde, ongesegmenteerde puntewolke. Die algoritme pas geslote geometriese entiteite of slegs dele daarvan. Die grense van hierdie entiteite word automaties bereken. Minimale gebruikersinteraksie word benodig om die geometriese entiteite te pas. Die algoritme is akkuraat en robuust. Die algoritme is ontwikkel vir gebruik in die truwaartse ingenieurswese omgewing. Puntewolke opgemeet in hierdie omgewing het tipies meetfoute met 'n normaal verdeling. Omvattende toetsing en resultate word getoon en daarmee ook die nut wat die algoritme vir die gebruiksomgewing inhou. 2012-08-27T11:35:00Z 2012-08-27T11:35:00Z 2001-12 Thesis http://hdl.handle.net/10019.1/52449 en_ZA Stellenbosch University 1 v. (various foliations) : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Reverse engineering Geometry, Analytic -- Solid Dissertations -- Mechanical engineering Theses -- Mechanical engineering Goussard, Charl Leonard Semi-automatic extraction of primitive geometric entities from point clouds |
| title | Semi-automatic extraction of primitive geometric entities from point clouds |
| title_full | Semi-automatic extraction of primitive geometric entities from point clouds |
| title_fullStr | Semi-automatic extraction of primitive geometric entities from point clouds |
| title_full_unstemmed | Semi-automatic extraction of primitive geometric entities from point clouds |
| title_short | Semi-automatic extraction of primitive geometric entities from point clouds |
| title_sort | semi automatic extraction of primitive geometric entities from point clouds |
| topic | Reverse engineering Geometry, Analytic -- Solid Dissertations -- Mechanical engineering Theses -- Mechanical engineering |
| url | http://hdl.handle.net/10019.1/52449 |
| work_keys_str_mv | AT goussardcharlleonard semiautomaticextractionofprimitivegeometricentitiesfrompointclouds |