# Space subdivision for fast ray tracing

@article{Glassner1984SpaceSF, title={Space subdivision for fast ray tracing}, author={Andrew S. Glassner}, journal={IEEE Computer Graphics and Applications}, year={1984}, volume={4}, pages={15-24} }

An algorithm is described that speeds up ray-tracing techniques by reducing the number of time-consuming object-ray intersection calculations that have to be made. The algorithm is based on subdividing space into an octree, associating a given voxel with only those objects whose surfaces pass through the volume of the voxel. It includes a technique for obtaining fast access to any node and a mechanism for finding the next node intersected by a ray when it has hit nothing in the current node…

## 719 Citations

### Ray tracing complex scenes

- Computer ScienceSIGGRAPH
- 1986

A new algorithm for speeding up ray-object intersection calculations is presented and a new hierarchy traversal algorithm is presented which is efficient in the sense that objects along the ray are queried in an efficient order.

### Analysis of an algorithm for fast ray tracing using uniform space subdivision

- Computer ScienceThe Visual Computer
- 2005

A theoretical analysis of the algorithm used to speed upRay tracing by means of space subdivision, which shows how the space and time requirements vary with the number of objects in the scene.

### Heuristics for ray tracing using space subdivision

- Computer ScienceThe Visual Computer
- 2005

Two heuristics for space subdivisions using bintrees are examined based on the intuition that surface area is a good estimate of intersection probability and the fact that the optimal splitting plane lies between the spatial median and the object median planes of a volume.

### An Efficient Algorithm for Ray Tracing

- Computer ScienceJ. Intell. Robotic Syst.
- 2000

A new algorithm that performs more efficient ray tracing compared to existing algorithms based on the “divide-and-conquer” technique well known from the area of lists sorting, and speeds up the intersections and light-visibility tests for the first hit.

### Ray Tracing Optimization Utilizing Projective

- Computer Science
- 1996

New techniques for speeding up the ray tracing algorithm are presented, utilizing bounding rectangular extents around the primitives constituting the scene, which can be beneficial for many diferent types of primitives to be ray traced.

### Object and ray coherence in the optimization of the ray tracing algorithm

- PhysicsProceedings. Computer Graphics International (Cat. No.98EX149)
- 1998

The authors' proposal for ray tracing optimization is based on the combined use of object and ray coherence when tracing beams in scenes subdivided by octrees, facilitating the simultaneous tracing of rays integrated in a beam.

### Fast ray tracing by ray classification

- Computer ScienceSIGGRAPH
- 1987

A new approach to ray tracing which drastically reduces the number of ray-object and ray-bounds intersection calculations by means of 5-dimensional space subdivision, which significantly outperforms previous ray tracing techniques.

### Fast Ray-Casting for Irregular Volumes

- Computer ScienceISHPC
- 2000

A fast cell traverse method for volume rendering of irregular volume datasets by using the exterior faces of cells rather than the ray as a basis for processing.

### Ray tracing optimization utilizing projective methods

- Computer ScienceProceedings of CG International '96
- 1996

Results given for the regular grid- and quadtree-based techniques illustrate that even on single-processor machines it becomes viable to ray trace complex scenes in an affordable time, and are tested with scenes containing up to one million primitives.

### A Survey of Geometric Data Structures for Ray Tracing

- Geology
- 2001

Ray tracing is a computer graphics technique for generating photo-realistic images. To determine the color at each pixel of the image, one traces the path traversed by each ray of light arriving at…

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