Book chapter
LRZB, a Hybrid Algorithm of Local Ray-Casting and Z-Buffering for Large Geometric Datasets
Grid and Cooperative Computing - GCC 2004 Workshops, pp.720-727
Lecture Notes in Computer Science, Springer Berlin Heidelberg
2004
DOI: 10.1007/978-3-540-30207-0_88
Abstract
This paper presents a hybrid algorithm, LRZB, for real-time rendering of large complex scenes. The basic LRZB algorithm decomposes scenes into two sub-scenes, and uses z-buffering to render the low depth complexity set and ray casting to render the remainder. The basic LRZB works well for densely occluded scenes. Several techniques to enhance the ray casting component of basic LRZB algorithm are presented: lazy ray casting, object-oriented ray casting, selective lazy ray casting, and coherent octree traversal. Experiments demonstrate that LRZB can achieve 2-10 times speed-up for large complex scenes compared with conventional z-buffer rendering.LRZB is efficient, easy to implement, and amenable to parallelization, especially in distributed Grid environments.
Details
- Title: Subtitle
- LRZB, a Hybrid Algorithm of Local Ray-Casting and Z-Buffering for Large Geometric Datasets
- Creators
- Xiaoxu Han - Computational SciencesJames Cremer - University of IowaZhihong Wang - University of IowaJun Ni - University of Iowa
- Resource Type
- Book chapter
- Publication Details
- Grid and Cooperative Computing - GCC 2004 Workshops, pp.720-727
- Publisher
- Springer Berlin Heidelberg; Berlin, Heidelberg
- Series
- Lecture Notes in Computer Science
- DOI
- 10.1007/978-3-540-30207-0_88
- eISSN
- 1611-3349
- ISSN
- 0302-9743
- Language
- English
- Date published
- 2004
- Academic Unit
- Mechanical Engineering; Computer Science
- Record Identifier
- 9984259428602771
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