Universiti Teknologi Malaysia Institutional Repository

Soft shadow rendering based on real light source estimation in augmented reality

Noh, Zakiah and Sunar, Mohd. Shahrizal (2010) Soft shadow rendering based on real light source estimation in augmented reality. Advances in Multimedia - An International Journal, 1 (2). pp. 26-36. ISSN 2180-1223

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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 time. 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, rendered base on real light sources position. The reflective sphere is used to create environment map image that can estimate the light source from the real scene and generate the soft shadows.

Item Type:Article
Uncontrolled Keywords:augmented reality, shadow, soft shadow, reflective sphere, environment map
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Computer Science and Information System (Formerly known)
ID Code:38417
Deposited On:26 May 2014 08:48
Last Modified:06 Jun 2017 10:45

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