Image-based extrusion with realistic surface wrinkles
Per-pixel extrusion mapping is an image-based modeling and rendering technique that can be used in a large variety of computer graphic applications. This technique makes it possible to create geometries without polygonal meshes by extrusion of a basic form stored in a 2D binary image. It is availabl...
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| Published in: | Journal of computational design and engineering Vol. 7; no. 1; pp. 30 - 43 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Oxford University Press
01.02.2020
한국CDE학회 |
| Subjects: | |
| ISSN: | 2288-5048, 2288-4300, 2288-5048 |
| Online Access: | Get full text |
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| Summary: | Per-pixel extrusion mapping is an image-based modeling and rendering technique that can be used in a large variety of computer graphic applications. This technique makes it possible to create geometries without polygonal meshes by extrusion of a basic form stored in a 2D binary image. It is available in four versions: basic extrusion, outward extrusion, beveled extrusion, and chamfered extrusion, and all allow the production of satisfactory results in terms of interactivity or visual quality. The problem is that the extruded surfaces do not exhibit microrelief effects and have a lack of realistic superficial wrinkles. To solve this problem, we proposed in this paper a combination of the per-pixel extrusion mapping and the bump mapping in order to add a microrelief effect to extruded surfaces without changing the basic geometry. For the real-time synchronization between the depth scaling of the microreliefs and the resulting shading, we proposed to use a scale factor to further disturb the normal in a function of depths.Graphical Abstract
Graphical Abstract |
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| ISSN: | 2288-5048 2288-4300 2288-5048 |
| DOI: | 10.1093/jcde/qwaa004 |