Please use this identifier to cite or link to this item: https://doi.org/10.1109/ISMAR.2009.5336453
Title: Consistent real-time lighting for virtual objects in augmented reality
Authors: Yeoh, R.C.
Zhou, S.Z. 
Keywords: Augmented reality
Illumination
Radiosity
Realistic rendering
Shadow
Issue Date: 2009
Citation: Yeoh, R.C., Zhou, S.Z. (2009). Consistent real-time lighting for virtual objects in augmented reality. Science and Technology Proceedings - IEEE 2009 International Symposium on Mixed and Augmented Reality, ISMAR 2009 : 223-224. ScholarBank@NUS Repository. https://doi.org/10.1109/ISMAR.2009.5336453
Abstract: We present a technique for rendering realistic shadows of virtual objects in a mixed reality environment by recovering the light source distribution of a scene in real-time, through the segmentation and analysis of a known occluding object's shadows. A fiducial marker provides information about the position of the occluding object and the plane of the surface on which shadows are cast, and serves as the origin of a marker coordinate system. A new shadow segmentation approach is carried out on the shadow image and is able to recover geometrical information on multiple faint shadows. Using normalised iterative reinforcement, noise and artifacts can be suppressed in the final shadow map. The scene's light source distribution is then extrapolated using geometrical data from both the occluding object and its cast shadows. Virtual light sources in a game engine are used to mimic real light sources and achieve consistent illumination and increase the realism of the augmented reality scene. ©2009 IEEE.
Source Title: Science and Technology Proceedings - IEEE 2009 International Symposium on Mixed and Augmented Reality, ISMAR 2009
URI: http://scholarbank.nus.edu.sg/handle/10635/83578
ISBN: 9781424453900
DOI: 10.1109/ISMAR.2009.5336453
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

7
checked on Nov 14, 2018

WEB OF SCIENCETM
Citations

5
checked on Nov 6, 2018

Page view(s)

23
checked on Oct 26, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.