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Realistic Real-Time Outdoor Rendering in Augmented Reality

Realistic rendering techniques of outdoor Augmented Reality (AR) has been an attractive topic since the last two decades considering the sizeable amount of publications in computer graphics. Realistic virtual objects in outdoor rendering AR systems require sophisticated effects such as: shadows, day...

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Detalles Bibliográficos
Autores principales: Kolivand, Hoshang, Sunar, Mohd Shahrizal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4182460/
https://www.ncbi.nlm.nih.gov/pubmed/25268480
http://dx.doi.org/10.1371/journal.pone.0108334
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author Kolivand, Hoshang
Sunar, Mohd Shahrizal
author_facet Kolivand, Hoshang
Sunar, Mohd Shahrizal
author_sort Kolivand, Hoshang
collection PubMed
description Realistic rendering techniques of outdoor Augmented Reality (AR) has been an attractive topic since the last two decades considering the sizeable amount of publications in computer graphics. Realistic virtual objects in outdoor rendering AR systems require sophisticated effects such as: shadows, daylight and interactions between sky colours and virtual as well as real objects. A few realistic rendering techniques have been designed to overcome this obstacle, most of which are related to non real-time rendering. However, the problem still remains, especially in outdoor rendering. This paper proposed a much newer, unique technique to achieve realistic real-time outdoor rendering, while taking into account the interaction between sky colours and objects in AR systems with respect to shadows in any specific location, date and time. This approach involves three main phases, which cover different outdoor AR rendering requirements. Firstly, sky colour was generated with respect to the position of the sun. Second step involves the shadow generation algorithm, Z-Partitioning: Gaussian and Fog Shadow Maps (Z-GaF Shadow Maps). Lastly, a technique to integrate sky colours and shadows through its effects on virtual objects in the AR system, is introduced. The experimental results reveal that the proposed technique has significantly improved the realism of real-time outdoor AR rendering, thus solving the problem of realistic AR systems.
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spelling pubmed-41824602014-10-07 Realistic Real-Time Outdoor Rendering in Augmented Reality Kolivand, Hoshang Sunar, Mohd Shahrizal PLoS One Research Article Realistic rendering techniques of outdoor Augmented Reality (AR) has been an attractive topic since the last two decades considering the sizeable amount of publications in computer graphics. Realistic virtual objects in outdoor rendering AR systems require sophisticated effects such as: shadows, daylight and interactions between sky colours and virtual as well as real objects. A few realistic rendering techniques have been designed to overcome this obstacle, most of which are related to non real-time rendering. However, the problem still remains, especially in outdoor rendering. This paper proposed a much newer, unique technique to achieve realistic real-time outdoor rendering, while taking into account the interaction between sky colours and objects in AR systems with respect to shadows in any specific location, date and time. This approach involves three main phases, which cover different outdoor AR rendering requirements. Firstly, sky colour was generated with respect to the position of the sun. Second step involves the shadow generation algorithm, Z-Partitioning: Gaussian and Fog Shadow Maps (Z-GaF Shadow Maps). Lastly, a technique to integrate sky colours and shadows through its effects on virtual objects in the AR system, is introduced. The experimental results reveal that the proposed technique has significantly improved the realism of real-time outdoor AR rendering, thus solving the problem of realistic AR systems. Public Library of Science 2014-09-30 /pmc/articles/PMC4182460/ /pubmed/25268480 http://dx.doi.org/10.1371/journal.pone.0108334 Text en © 2014 Kolivand, Sunar http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Kolivand, Hoshang
Sunar, Mohd Shahrizal
Realistic Real-Time Outdoor Rendering in Augmented Reality
title Realistic Real-Time Outdoor Rendering in Augmented Reality
title_full Realistic Real-Time Outdoor Rendering in Augmented Reality
title_fullStr Realistic Real-Time Outdoor Rendering in Augmented Reality
title_full_unstemmed Realistic Real-Time Outdoor Rendering in Augmented Reality
title_short Realistic Real-Time Outdoor Rendering in Augmented Reality
title_sort realistic real-time outdoor rendering in augmented reality
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4182460/
https://www.ncbi.nlm.nih.gov/pubmed/25268480
http://dx.doi.org/10.1371/journal.pone.0108334
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