Three-dimensional terahertz-wave holographic imaging based on mixed-domain reconstruction algorithm

Shengming Gu; Chao Li; Xiang Gao; Zhaoyang Sun; Guangyou Fang

doi:10.3788/HPLPB20132506.1545

Three-dimensional terahertz-wave holographic imaging based on mixed-domain reconstruction algorithm

Shengming Gu^*, Chao Li, Xiang Gao, Zhaoyang Sun, Guangyou Fang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A three-dimensional (3-D) image reconstruction algorithm based on mixed-domain is developed for terahertz holographic imager. Matched filtering in the spatial wave-number domain is employed to focus images in the vertical direction. Combined with back-projection technique used in the other two directions, the algorithm can focus images perfectly without complex 3-D Stolt interpolation computation compared with the frequency-wavenumber algorithm. Besides, motion compensations in the horizontal and range directions get easier to handle. The computational cost of the proposed algorithm is lower than the traditional 3-D back-projection algorithm owing to the FFT-based reconstruction in the vertical direction. Finally, some simulation and experimental imaging results are given in the 0.2 THz band to validate the algorithm.

Original language	English
Pages (from-to)	1545-1548
Number of pages	4
Journal	Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Volume	25
Issue number	6
DOIs	https://doi.org/10.3788/HPLPB20132506.1545
Publication status	Published - Jun 2013
Externally published	Yes

Keywords

Back-projection
Holographic imaging
Mixed-domain algorithm
Terahertz imaging
Three-dimensional imaging

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10.3788/HPLPB20132506.1545

Cite this

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title = "Three-dimensional terahertz-wave holographic imaging based on mixed-domain reconstruction algorithm",

abstract = "A three-dimensional (3-D) image reconstruction algorithm based on mixed-domain is developed for terahertz holographic imager. Matched filtering in the spatial wave-number domain is employed to focus images in the vertical direction. Combined with back-projection technique used in the other two directions, the algorithm can focus images perfectly without complex 3-D Stolt interpolation computation compared with the frequency-wavenumber algorithm. Besides, motion compensations in the horizontal and range directions get easier to handle. The computational cost of the proposed algorithm is lower than the traditional 3-D back-projection algorithm owing to the FFT-based reconstruction in the vertical direction. Finally, some simulation and experimental imaging results are given in the 0.2 THz band to validate the algorithm.",

keywords = "Back-projection, Holographic imaging, Mixed-domain algorithm, Terahertz imaging, Three-dimensional imaging",

author = "Shengming Gu and Chao Li and Xiang Gao and Zhaoyang Sun and Guangyou Fang",

year = "2013",

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doi = "10.3788/HPLPB20132506.1545",

language = "English",

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T1 - Three-dimensional terahertz-wave holographic imaging based on mixed-domain reconstruction algorithm

AU - Gu, Shengming

AU - Li, Chao

AU - Gao, Xiang

AU - Sun, Zhaoyang

AU - Fang, Guangyou

PY - 2013/6

Y1 - 2013/6

N2 - A three-dimensional (3-D) image reconstruction algorithm based on mixed-domain is developed for terahertz holographic imager. Matched filtering in the spatial wave-number domain is employed to focus images in the vertical direction. Combined with back-projection technique used in the other two directions, the algorithm can focus images perfectly without complex 3-D Stolt interpolation computation compared with the frequency-wavenumber algorithm. Besides, motion compensations in the horizontal and range directions get easier to handle. The computational cost of the proposed algorithm is lower than the traditional 3-D back-projection algorithm owing to the FFT-based reconstruction in the vertical direction. Finally, some simulation and experimental imaging results are given in the 0.2 THz band to validate the algorithm.

AB - A three-dimensional (3-D) image reconstruction algorithm based on mixed-domain is developed for terahertz holographic imager. Matched filtering in the spatial wave-number domain is employed to focus images in the vertical direction. Combined with back-projection technique used in the other two directions, the algorithm can focus images perfectly without complex 3-D Stolt interpolation computation compared with the frequency-wavenumber algorithm. Besides, motion compensations in the horizontal and range directions get easier to handle. The computational cost of the proposed algorithm is lower than the traditional 3-D back-projection algorithm owing to the FFT-based reconstruction in the vertical direction. Finally, some simulation and experimental imaging results are given in the 0.2 THz band to validate the algorithm.

KW - Back-projection

KW - Holographic imaging

KW - Mixed-domain algorithm

KW - Terahertz imaging

KW - Three-dimensional imaging

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Three-dimensional terahertz-wave holographic imaging based on mixed-domain reconstruction algorithm

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Keywords

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