NDLI: An efficient GPU-based approach for interactive global illumination

Content Provider	ACM Digital Library
Author	Zhou, Kun Bao, Hujun Pan, Minghao Wang, Rui
Copyright Year	2009
Abstract	This paper presents a GPU-based method for interactive global illumination that integrates complex effects such as multi-bounce indirect lighting, glossy reflections, caustics, and arbitrary specular paths. Our method builds upon scattered data sampling and interpolation on the GPU. We start with raytraced shading points and partition them into coherent shading clusters using adaptive seeding followed by k-means. At each cluster center we apply final gather to evaluate its incident irradiance using GPU-based photon mapping. We approximate the entire photon tree as a compact illumination cut, thus reducing the final gather cost for each ray. The sampled irradiance values are then interpolated at all shading points to produce rendering. Our method exploits the spatial coherence of illumination to reduce sampling cost. We sample sparsely and the distribution of sample points conforms with the underlying illumination changes. Therefore our method is both fast and preserves high rendering quality. Although the same property has been exploited by previous caching and adaptive sampling methods, these methods typically require sequential computation of sample points, making them ill-suited for the GPU. In contrast, we select sample points adaptively in a single pass, enabling parallel computation. As a result, our algorithm runs entirely on the GPU, achieving interactive rates for scenes with complex illumination effects.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISSN	07300301
e-ISSN	15577368
DOI	10.1145/1531326.1531397
Volume Number	28
Issue Number	3
Journal	ACM Transactions on Graphics (TOG)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2009-07-27
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	GPU Final gather Global illumination Illumination cut K-means Photon mapping
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

An efficient GPU-based approach for interactive global illumination

H.: An efficient gpu-based approach for interactive global illumination

Progressive photon mapping: A probabilistic approach

Implicit visibility and antiradiance for interactive global illumination

A final reconstruction approach for a unified global illumination algorithm

Implicit visibility and antiradiance for interactive global illumination

Adaptive progressive photon mapping

Modular Radiance Transfer

Fast and detailed approximate global illumination by irradiance decomposition

An efficient GPU-based approach for interactive global illumination

Similar Documents

An efficient GPU-based approach for interactive global illumination

H.: An efficient gpu-based approach for interactive global illumination

Progressive photon mapping: A probabilistic approach

Implicit visibility and antiradiance for interactive global illumination

A final reconstruction approach for a unified global illumination algorithm

Implicit visibility and antiradiance for interactive global illumination

Adaptive progressive photon mapping

Modular Radiance Transfer

Fast and detailed approximate global illumination by irradiance decomposition

An efficient GPU-based approach for interactive global illumination