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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1109/TVCG.2015.2407398
|2 doi
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|a pubmed24n0842.xml
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Tze-Yiu Ho
|e verfasserin
|4 aut
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| 245 |
1 |
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|a All-Frequency Direct Illumination with Vectorized Visibility
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| 264 |
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|c 2015
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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| 500 |
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|a Date Completed 30.11.2015
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| 500 |
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|a Date Revised 11.09.2015
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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| 520 |
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|a Many existing pre-computed radiance transfer (PRT) approaches for all-frequency lighting store the information of a 3D object in the pre-vertex manner. To preserve the fidelity of high frequency effects, the 3D object must be tessellated densely. Otherwise, rendering artifacts due to interpolation may appear. This paper presents an all-frequency lighting algorithm for direct illumination based on a new visibility representation which approximates a visibility function using a sequence of 3D vectors. The algorithm is able to construct the visibility function of an on-screen pixel on-the-fly. Hence even though the 3D object is not tessellated densely, the rendering artifacts can be suppressed greatly. Besides, a summed area table based rendering algorithm, which is able to handle the integration over a non-axis aligned polygon, is developed. Using our approach, we can rotate lighting environment, change view point, and adjust the shininess of the 3D object in a real-time manner. Experimental results show that our approach can render plausible all-frequency lighting effects for direct illumination in real-time, especially for specular shadows, which are difficult for other methods to obtain
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| 650 |
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|a Journal Article
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| 650 |
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|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Yi Xiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rui-Bin Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chi-Sing Leung
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tien-Tsin Wong
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t IEEE transactions on visualization and computer graphics
|d 1996
|g 21(2015), 8 vom: 10. Aug., Seite 945-58
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|x 1941-0506
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|g volume:21
|g year:2015
|g number:8
|g day:10
|g month:08
|g pages:945-58
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|u http://dx.doi.org/10.1109/TVCG.2015.2407398
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