NDLI: High-quality surface splatting on today's GPUs

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High-quality surface splatting on today's GPUs

Content Provider	IEEE Xplore Digital Library
Author	Botsch, M. Hornung, A. Zwicker, M. Kobbelt, L.
Copyright Year	2005
Description	Author affiliation: Comput. Graphics Group, RWTH Aachen Tech. Univ., Germany (Botsch, M.; Hornung, A.)
Abstract	Point-based geometries evolved into a valuable alternative to surface representations based on polygonal meshes, because of their conceptual simplicity and superior flexibility. Elliptical surface splats were shown to allow for high-quality anti-aliased rendering by sophisticated EWA filtering. Since the publication of the original software-based EWA splatting, several authors tried to map this technique to the GPU in order to exploit hardware acceleration. Due to the lacking support for splat primitives, these methods always have to find a trade-off between rendering quality and rendering performance. In this paper, we discuss the capabilities of today's GPUs for hardware-accelerated surface splatting. We present an approach that achieves a quality comparable to the original EWA splatting at a rate of more than 20M elliptical splats per second. In contrast to previous GPU renderers, our method provides per-pixel Phong shading even for dynamically changing geometries and high-quality anti-aliasing by employing a screen-space pre-filter in addition to the object-space reconstruction filter. The use of deferred shading techniques effectively avoids unnecessary shader computations and additionally provides a clear separation between the rasterization and the shading of elliptical splats, which considerably simplifies the development of custom shaders. We demonstrate quality, efficiency, and flexibility of our approach by showing several shaders on a range of models.
Sponsorship	IEEE Visualization and Graphics Tech. Comm. Eurographics Assoc. in cooperation with ACM SIGGRAPH
Starting Page	17
Ending Page	141
File Size	1426795
Page Count	125
File Format	PDF
ISBN	3905673207
ISSN	15117813
DOI	10.1109/PBG.2005.194059
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Eurographics Assoc.
Subject Keyword	Surface reconstruction Computational geometry Information geometry Filtering Piecewise linear techniques Computer graphics Rendering (computer graphics) Sampling methods Hardware Acceleration
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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