NDLI: Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments

Content Provider	ACM Digital Library
Author	Sloan, Peter-Pike Snyder, John Kautz, Jan
Copyright Year	2002
Abstract	We present a new, real-time method for rendering diffuse and glossy objects in low-frequency lighting environments that captures soft shadows, interreflections, and caustics. As a preprocess, a novel global transport simulator creates functions over the object's surface representing transfer of arbitrary, low-frequency incident lighting into transferred radiance which includes global effects like shadows and interreflections from the object onto itself. At run-time, these transfer functions are applied to actual incident lighting. Dynamic, local lighting is handled by sampling it close to the object every frame; the object can also be rigidly rotated with respect to the lighting and vice versa. Lighting and transfer functions are represented using low-order spherical harmonics. This avoids aliasing and evaluates efficiently on graphics hardware by reducing the shading integral to a dot product of 9 to 25 element vectors for diffuse receivers. Glossy objects are handled using matrices rather than vectors. We further introduce functions for radiance transfer from a dynamic lighting environment through a preprocessed object to neighboring points in space. These allow soft shadows and caustics from rigidly moving objects to be cast onto arbitrary, dynamic receivers. We demonstrate real-time global lighting effects with this approach.
Starting Page	527
Ending Page	536
Page Count	10
File Format	PDF
ISSN	07300301
e-ISSN	15577368
DOI	10.1145/566654.566612
Volume Number	21
Issue Number	3
Journal	ACM Transactions on Graphics (TOG)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2002-07-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Monte Carlo techniques Graphics hardware Illumination Rendering Shadow algorithms
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

Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments

Clustered principal components for precomputed radiance transfer

Bi-scale radiance transfer

Precomputed local radiance transfer for real-time lighting design

Clustered principal components for precomputed radiance transfer

Real-Time Volume Rendering in Dynamic Lighting Environments Using Precomputed Photon Mapping

Bi-scale radiance transfer

Spherical Piecewise Constant Basis Functions for All-Frequency Precomputed Radiance Transfer

Precomputed local radiance transfer for real-time lighting design

Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments

Similar Documents

Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments

Clustered principal components for precomputed radiance transfer

Bi-scale radiance transfer

Precomputed local radiance transfer for real-time lighting design

Clustered principal components for precomputed radiance transfer

Real-Time Volume Rendering in Dynamic Lighting Environments Using Precomputed Photon Mapping

Bi-scale radiance transfer

Spherical Piecewise Constant Basis Functions for All-Frequency Precomputed Radiance Transfer

Precomputed local radiance transfer for real-time lighting design

Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments