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Proceedings Paper

Resolution enhancement of terahertz imaging by incremental Wiener filtering
Author(s): Zhi Hong; Wenhua Xiao; Haibin Chen
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Paper Abstract

A two dimensional raster scanning terahertz imaging system based on a continuous backward-wave oscillator (BWO) terahertz source is built up. To improve the spatial resolution of the system, a scanning step smaller than the focused spot size of the terahertz beam is used to get the transmission image. After pre-processing of the image with wavelet filtering, and using incremental Wiener filtering for image restoration, a terahertz image with resolution higher than the diffraction limit of the system can be obtained. Our imaging experiment shows that this method can both enhance spatial resolution and suppress imaging noise effectively.

Paper Details

Date Published: 5 August 2009
PDF: 7 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73850J (5 August 2009); doi: 10.1117/12.834940
Show Author Affiliations
Zhi Hong, China Jiliang Univ. (China)
Wenhua Xiao, China Jiliang Univ. (China)
Haibin Chen, China Jiliang Univ. (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

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