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Soft Shadow Rendering based on Real Light Source Estimation in Augmented Reality
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Advances in Multimedia - An International Journal (AMIJ)
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Volume:  1    Issue:  2
Pages:  26-48
Publication Date:   October
ISSN (Online): 2180-1223
Pages 
26 - 36
Author(s)  
Zakiah Noh - Malaysia
 
Published Date   
30-10-2010 
Publisher 
CSC Journals, Kuala Lumpur, Malaysia
ADDITIONAL INFORMATION
Keywords   Abstract   References   Cited by   Related Articles   Collaborative Colleague
 
KEYWORDS:   Augmented Reality, shadow, soft shadow, reflective sphere 
 
 
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The most challenging task in developing Augmented Reality (AR) applications is to make virtual objects mixed harmoniously with the real scene. To achieve photorealistic AR environment, three key issues must be emphasized namely consistency of geometry, illumination and speed. Shadow is an essential element to improve visual perception and realism. Without shadow, virtual objects will appear like it is floating and thus will make the environment look unrealistic. However, many shadow algorithms still have drawbacks such as producing sharp and hard-edged outlines, which make the shadow’s appearance unrealistic. Thus, this paper will focus on generating soft shadow in AR scene render based on real light sources position, where reflective sphere is used to create environment map image to estimate the light source from the real scene and render the soft shadows. 
 
 
 
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Zakiah Noh : Colleagues
Mohd Shahrizal Sunar : Colleagues  
 
 
 
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