Soft bilateral filtering shadows using multiple image-based algorithms
This study introduces Soft Bilateral Filtering Shadows method of dynamic scenes, which uses multi-matrices of the light sample points due to lack realism in soft shadows generation in real time. While geometry-based shadow algorithm requires one pass per polygon for rendering shadow that requires ti...
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| Format: | Article |
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Springer New York LLC
2017
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| _version_ | 1796862608144334848 |
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| author | Ali, H. H. Kolivand, H. Sunar, M. S. |
| author_facet | Ali, H. H. Kolivand, H. Sunar, M. S. |
| author_sort | Ali, H. H. |
| collection | ePrints |
| description | This study introduces Soft Bilateral Filtering Shadows method of dynamic scenes, which uses multi-matrices of the light sample points due to lack realism in soft shadows generation in real time. While geometry-based shadow algorithm requires one pass per polygon for rendering shadow that requires time-consuming, the adopted shadow map algorithm needs a single rendering pass for each sample point of the light source to generate shadow at low cost. This method renders a complex scenes and accurately eliminating the inherent deficiencies in shadow maps. In order to compute shadow maps, view matrices were used for each sample point of the extended light source. Then penumbra region was used for interpolation based on bilateral filtering to create the soft shadows. They depend on multiple shadow maps which provide antialiasing shadow maps. The method uses fragment shader for rendering multiple shadow maps with penumbra and umbra regions. The main contribution of this article is introducing interpolation bilaterally of image-based shadows. This method makes the most effect of the computation significantly appear at the edges of the penumbra region. Furthermore, the filtering allows to obtain on the soft shadow marvelously at the lowest number possible of the light sample points. The generated soft shadows have good performance and high quality therefore, they are suitable for interactive applications. |
| first_indexed | 2024-03-05T20:14:12Z |
| format | Article |
| id | utm.eprints-76981 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:14:12Z |
| publishDate | 2017 |
| publisher | Springer New York LLC |
| record_format | dspace |
| spelling | utm.eprints-769812018-05-31T09:33:07Z http://eprints.utm.my/76981/ Soft bilateral filtering shadows using multiple image-based algorithms Ali, H. H. Kolivand, H. Sunar, M. S. QA75 Electronic computers. Computer science This study introduces Soft Bilateral Filtering Shadows method of dynamic scenes, which uses multi-matrices of the light sample points due to lack realism in soft shadows generation in real time. While geometry-based shadow algorithm requires one pass per polygon for rendering shadow that requires time-consuming, the adopted shadow map algorithm needs a single rendering pass for each sample point of the light source to generate shadow at low cost. This method renders a complex scenes and accurately eliminating the inherent deficiencies in shadow maps. In order to compute shadow maps, view matrices were used for each sample point of the extended light source. Then penumbra region was used for interpolation based on bilateral filtering to create the soft shadows. They depend on multiple shadow maps which provide antialiasing shadow maps. The method uses fragment shader for rendering multiple shadow maps with penumbra and umbra regions. The main contribution of this article is introducing interpolation bilaterally of image-based shadows. This method makes the most effect of the computation significantly appear at the edges of the penumbra region. Furthermore, the filtering allows to obtain on the soft shadow marvelously at the lowest number possible of the light sample points. The generated soft shadows have good performance and high quality therefore, they are suitable for interactive applications. Springer New York LLC 2017 Article PeerReviewed Ali, H. H. and Kolivand, H. and Sunar, M. S. (2017) Soft bilateral filtering shadows using multiple image-based algorithms. Multimedia Tools and Applications, 76 (2). pp. 2591-2608. ISSN 1380-7501 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954539653&doi=10.1007%2fs11042-016-3254-0&partnerID=40&md5=d6b0eef49da135bb58f7eeabcb23acfd DOI:10.1007/s11042-016-3254-0 |
| spellingShingle | QA75 Electronic computers. Computer science Ali, H. H. Kolivand, H. Sunar, M. S. Soft bilateral filtering shadows using multiple image-based algorithms |
| title | Soft bilateral filtering shadows using multiple image-based algorithms |
| title_full | Soft bilateral filtering shadows using multiple image-based algorithms |
| title_fullStr | Soft bilateral filtering shadows using multiple image-based algorithms |
| title_full_unstemmed | Soft bilateral filtering shadows using multiple image-based algorithms |
| title_short | Soft bilateral filtering shadows using multiple image-based algorithms |
| title_sort | soft bilateral filtering shadows using multiple image based algorithms |
| topic | QA75 Electronic computers. Computer science |
| work_keys_str_mv | AT alihh softbilateralfilteringshadowsusingmultipleimagebasedalgorithms AT kolivandh softbilateralfilteringshadowsusingmultipleimagebasedalgorithms AT sunarms softbilateralfilteringshadowsusingmultipleimagebasedalgorithms |