ID-Based Rendering of Silhouettes on GPU

Diktas, Engin Deniz; Sahiner, Ali Vahit

ID-Based Rendering of Silhouettes on GPU

Files

017-024.pdf (271.82 KB)

Date

2010

Authors

Diktas, Engin Deniz
Sahiner, Ali Vahit

Publisher

The Eurographics Association

Abstract

When rendering object-silhouettes preprocessing is generally done primarily on the CPU. To this end primitive normals must be made consistent and the silhouette-edges need to be extracted every time the view-point is changed. In this paper we propose a pure image-based GPU-method where IDs of triangles are rendered to a texture and silhouettes are extracted based on the information stored in that texture. With this method the geometry does not need to be preprocessed or reprocessed when the view-point or the geometry is changed. Another important advantage of the proposed method over any Z-buffer based method is that it does not require any threshold value to compare against the difference between depth-values of the neighboring pixels which is difficult to adjust in perspective projection.

        @inproceedings{:10.2312/LocalChapterEvents/TPCG/TPCG10/017-024
,
booktitle = {Theory and Practice of Computer Graphics
},
editor = {John Collomosse and Ian Grimstead
},
title = {{ID-Based Rendering of Silhouettes on GPU
}},
author = {Diktas, Engin Deniz and 
Sahiner, Ali Vahit
},
year = {2010
},
publisher = {The Eurographics Association
},
ISBN = {978-3-905673-75-3
},
DOI = {/10.2312/LocalChapterEvents/TPCG/TPCG10/017-024
}
}