Simulated real-time soft shadow in mixed reality using fuzzy logic

Authors:
Hoshang Kolivand;Mohd Shahrizal Sunar;Amjad Rehman;Ayman Altameem
Affiliations:
Faculty of Computer Science and Information systems, Universiti Teknologi Malaysia, Skudai Johor, Malaysia 81310;Faculty of Computer Science and Information systems, Universiti Teknologi Malaysia, Skudai Johor, Malaysia 81310;MIS Department College of Business Administration Salman bin Abdul Aziz University, Alkharj, KSA;College of Applied Studies and Community Services King Saud University, Riyadh, KSA
Venue:
3D Research
Year:
2013

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Abstract

This paper presents fuzzy logic in computer graphics to generate soft shadows in virtual environments and augmented reality. A very short overview on hard shadow generation is introduced. Shadow volume which is a conventional technique to create hard shadow is the base algorithm for our approach to show hard shadows in crisp set. A new technique with help of shadow maps for generating soft shadows using fuzzy logic is used. Fuzzy logic could change the concept of soft shadows into mathematically simple forms. Conversion of the soft shadows into fuzzy logic could change some parts of complex calculation to a simple physical based approach for increasing the speed of rendering. ARToolkit is used for geometric tracking as well as stencil buffer. A credible soft shadow is produced by splitting the wide light source into many parts.