Fast terahertz reflection tomography using block-based compressed sensing

被引：28
|
作者：
Cho, Sang-Heum [1 ]
Lee, Sang-Hun [2 ]
Nam-Gung, Chan [1 ]
Oh, Seoung-Jun [1 ]
Son, Joo-Hiuk [2 ]
Park, Hochong [1 ]
Ahn, Chang-Beom [1 ]
机构：
[1] Kwangwoon Univ, VIA Multimedia Ctr, Seoul, South Korea
[2] Univ Seoul, Dept Phys, Seoul, South Korea
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 17期
关键词：
FOCUSS; WAVES;
D O I：
10.1364/OE.19.016401
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, a new fast terahertz reflection tomography is proposed using block-based compressed sensing. Since measuring the time-domain signal on two-dimensional grid requires excessive time, reducing measurement time is highly demanding in terahertz tomography. The proposed technique directly reduces the number of sampling points in the spatial domain without modulation or transformation of the signal. Compressed sensing in spatial domain suggests a block-based reconstruction, which substantially reduces computational time without degrading the image quality. An overlap-average method is proposed to remove the block artifact in the block-based compressed sensing. Fast terahertz reflection tomography using the block-based compressed sensing is demonstrated with an integrated circuit and parched anchovy as examples. (C) 2011 Optical Society of America
引用
收藏
页码：16401 / 16409
页数：9
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