A fast spatial-domain terahertz imaging using block-based compressed sensing

Byung Min Hwang; Sang Hun Lee; Woo Taek Lim; Chang Beom Ahn; Joo Hiuk Son; Hochong Park

doi:10.1007/s10762-011-9822-5

A fast spatial-domain terahertz imaging using block-based compressed sensing

Byung Min Hwang, Sang Hun Lee, Woo Taek Lim, Chang Beom Ahn, Joo Hiuk Son, Hochong Park

Department of Physics

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

19 Scopus citations

Abstract

A fast imaging method for a spatial-domain terahertz imaging system based on compressed sensing is proposed. Observing that the correlation between image pixels is localized, the image reconstruction in compressed sensing is performed on a block basis, resulting in a reduced computational load with no degradation in image quality. By applying the proposed method to a conventional spatial-domain terahertz imaging system, it was verified that a 128 × 128 image reconstructed using 30% measurements has the equivalent quality to that done using full measurements. The proposed method requires no additional hardware, and provides a general solution to fast spatial-domain terahertz imaging.

Original language	English
Pages (from-to)	1328-1336
Number of pages	9
Journal	Journal of Infrared, Millimeter, and Terahertz Waves
Volume	32
Issue number	11
DOIs	https://doi.org/10.1007/s10762-011-9822-5
State	Published - Nov 2011

Keywords

Block reconstruction
Compressed sensing
Fast imaging
T-ray imaging

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10.1007/s10762-011-9822-5

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abstract = "A fast imaging method for a spatial-domain terahertz imaging system based on compressed sensing is proposed. Observing that the correlation between image pixels is localized, the image reconstruction in compressed sensing is performed on a block basis, resulting in a reduced computational load with no degradation in image quality. By applying the proposed method to a conventional spatial-domain terahertz imaging system, it was verified that a 128 × 128 image reconstructed using 30% measurements has the equivalent quality to that done using full measurements. The proposed method requires no additional hardware, and provides a general solution to fast spatial-domain terahertz imaging.",

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AU - Lee, Sang Hun

AU - Lim, Woo Taek

AU - Ahn, Chang Beom

AU - Son, Joo Hiuk

AU - Park, Hochong

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AB - A fast imaging method for a spatial-domain terahertz imaging system based on compressed sensing is proposed. Observing that the correlation between image pixels is localized, the image reconstruction in compressed sensing is performed on a block basis, resulting in a reduced computational load with no degradation in image quality. By applying the proposed method to a conventional spatial-domain terahertz imaging system, it was verified that a 128 × 128 image reconstructed using 30% measurements has the equivalent quality to that done using full measurements. The proposed method requires no additional hardware, and provides a general solution to fast spatial-domain terahertz imaging.

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KW - T-ray imaging

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A fast spatial-domain terahertz imaging using block-based compressed sensing

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Keywords

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