Accession Number:

ADA586797

Title:

Voxel-Space Ambient Occlusion

Descriptive Note:

Technical rept.

Corporate Author:

IOWA UNIV IOWA CITY DEPT OF COMPUTER SCIENCE

Personal Author(s):

Report Date:

2012-02-01

Pagination or Media Count:

16.0

Abstract:

Ambient occlusion adds important detail to a scene. This paper presents a multiresolution screen-space voxel based ambient occlusion technique, which improves G-buffer based techniques, avoiding artifacts such as haloing. Our technique is scalable to the level-of-detail desired by the user. Because we assume voxels to be small objects, we compute ambient occlusion using an area rendering equation based formulation. As ambient occlusion changes smoothly across a scene, we use a stencil based screen-space multiresolution buffer to refine and render multiple resolution images. Curvature and depth discontinuity metrics to identify appropriate sampling rates.

Subject Categories:

  • Computer Programming and Software
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE