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Cone normal stepping
Dissertation (MSc)--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2019
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| _version_ | 1867613675290886144 |
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| access_status_str | Open Access |
| author2 | Helbig, Marde |
| author_browse | Helbig, Marde |
| author_facet | Helbig, Marde |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/71671 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:54.964Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/71671 Cone normal stepping Helbig, Marde u29265615@tuks.co.za Burger, Divan Desmond UCTD Parallax mapping Relief mapping Displacement mapping Heightmap Raytracing Cone step mapping Engineering, built environment and information technology theses SDG-04 Engineering, built environment and information technology theses SDG-09 Dissertation (MSc)--University of Pretoria, 2018. This dissertation examines several methods of relief mapping, such as parallax mapping and cone step mapping, as well as methods for soft shadowing and ambient occlusion of relief maps. Ambient occlusion is an approximation of global illumination that only takes occlusion into account. New relief mapping methods are introduced to bridge the gap between distance elds and cone maps. The new methods allow calculating approximate distance elds from their cone map approximate ambient occlusion and soft shadows. The new methods are compared with linear, binary, and interval search as well as variants of cone mapping, such as relaxed cone mapping and quad cone mapping. These methods were evaluated with regards to performance and accuracy and were found to be similar in performance and accuracy than the existing methods. The new methods did not outperform existing methods on the tested scenes, but the new methods make use of approximate distance elds and remove the maximum cone angle limitation. It was also shown that in most cases linear search with interval mapping performed the best, given the error metric used. TM2019 bs2026 Computer Science MSc Unrestricted SDG-04: Quality education SDG-09: Industry, innovation and infrastructure 2019-10-09T14:22:53Z 2019-10-09T14:22:53Z 19/09/03 2018 Dissertation Burger, DD 2018, Cone normal stepping, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/71671> S2019 http://hdl.handle.net/2263/71671 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Parallax mapping Relief mapping Displacement mapping Heightmap Raytracing Cone step mapping Engineering, built environment and information technology theses SDG-04 Engineering, built environment and information technology theses SDG-09 Cone normal stepping |
| title | Cone normal stepping |
| title_full | Cone normal stepping |
| title_fullStr | Cone normal stepping |
| title_full_unstemmed | Cone normal stepping |
| title_short | Cone normal stepping |
| title_sort | cone normal stepping |
| topic | UCTD Parallax mapping Relief mapping Displacement mapping Heightmap Raytracing Cone step mapping Engineering, built environment and information technology theses SDG-04 Engineering, built environment and information technology theses SDG-09 |
| url | http://hdl.handle.net/2263/71671 |