Resolution enhancement of terahertz imaging by incremental Wiener filtering

Zhi Hong; Wenhua Xiao; Haibin Chen

doi:10.1117/12.834940

4 August 2009 Resolution enhancement of terahertz imaging by incremental Wiener filtering

Zhi Hong, Wenhua Xiao, Haibin Chen

Proceedings Volume 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications; 73850J (2009) https://doi.org/10.1117/12.834940
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

Zhi Hong, Wenhua Xiao, and Haibin Chen "Resolution enhancement of terahertz imaging by incremental Wiener filtering", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73850J (4 August 2009); https://doi.org/10.1117/12.834940

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