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Real-time VE Signal Extraction and Denoising Using Programmable Graphics Hardware

Su, Yang, Xu, Zhijie and Jiang, Xiang (2009) Real-time VE Signal Extraction and Denoising Using Programmable Graphics Hardware. International Journal of Automation and Computing, 6 (4). pp. 326-334. ISSN 1476-8186

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Abstract

The sense of being within a three-dimensional space and interacting with virtual three-dimensional (3D) objects in a computer generated virtual environment (VE) often requires essential image, vision and sensor signal processing techniques such as differentiating and denoising. This paper describes novel implementations of the Gaussian filtering for characteristic signal extraction and wavelet-based image denoising algorithms that run on the graphics processing unit (GPU). While significant acceleration over standard CPU implementations is obtained through exploiting data parallelism provided by the modern programmable graphics hardware, the CPU can be freed up to run other computations more efficiently such as AI and physics. The proposed GPU-based Gaussian filtering can extract surface information from a real object and provide its material features for rendering and illumination. The wavelet-based signal denoising for large size digital images realized in this project provided better realism for VE visualization without sacrificing real-time and interactive performances of an application.

Item Type: Article
Subjects: T Technology > T Technology (General)
Z Bibliography. Library Science. Information Resources > ZA Information resources
Schools: School of Computing and Engineering
School of Computing and Engineering > Centre for Precision Technologies
School of Computing and Engineering > Centre for Precision Technologies > Surface Metrology Group
School of Computing and Engineering > Computer Graphics, Imaging and Vision Research Group
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Depositing User: Yuanping Xu
Date Deposited: 14 Jul 2009 14:37
Last Modified: 05 Jan 2011 13:00
URI: http://eprints.hud.ac.uk/id/eprint/3372

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