A three-dimensional imaging method based on the principle of coded aperture imaging

2005 ◽  
Author(s):  
Haitao Lang ◽  
Liren Liu ◽  
Qingguo Yang
Keyword(s):  
Three Dimensional ◽  
Coded Aperture ◽  
Imaging Method ◽  
Three Dimensional Imaging ◽  
Coded Aperture Imaging

scholarly journals Three-Dimensional Terahertz Coded-Aperture Imaging Based on Back Projection

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2510 ◽  
Author(s):  
Shuo Chen ◽  
Chenggao Luo ◽  
Hongqiang Wang ◽  
Wenpeng Wang ◽  
Long Peng ◽  
...  
Keyword(s):  
Computational Complexity ◽  
Pulse Compression ◽  
Signal To Noise Ratio ◽  
Reference Signal ◽  
Three Dimensional ◽  
Coded Aperture ◽  
Imaging Method ◽  
Back Projection ◽  
Coded Aperture Imaging ◽  
Resolution Imaging

Terahertz coded-aperture imaging (TCAI) can overcome the difficulties of traditional radar in forward-looking and high-resolution imaging. Three-dimensional (3D) TCAI relies mainly on the reference-signal matrix (RSM), the large size and poor accuracy of which reduce the computational efficiency and imaging ability, respectively. According to the previous research on TCAI, traditional TCAI cannot reduce the heavy computational burden while the improved TCAI achieve reconstructing the target parts of different ranges in parallel. However, large-sized RSM still accounts for the computational complexity of traditional TCAI and the improved TCAI. Therefore, this paper proposes a more efficient imaging method named back projection (BP)-TCAI (BP-TCAI). Referring to the basic principle of BP, BP-TCAI can not only divide the scattering information in different ranges but also project the range profiles into different imaging subareas. In this way, the target parts in different subareas can be reconstructed simultaneously to synthesize the whole 3D target and thus decomposes the computational complexity thoroughly. During the pulse compression and projection processes, the signal-to-noise ratio (SNR) of BP-TCAI is also improved. This present the imaging method, model and procedures of traditional TCAI, the improved TCAI and the proposed BP-TCAI. Numerical experimental results prove BP-TCAI to be more effective and efficient than previous imaging methods of TCAI. Besides, BP-TCAI can also be seen as synthetic aperture radar (SAR) imaging with coding technology. Therefore, BP-TCAI opens a future gate combining traditional SAR and coded-aperture imaging.

scholarly journals Diel Growth Cycle of Isolated Leaf Discs Analyzed with a Novel, High-Throughput Three-Dimensional Imaging Method Is Identical to That of Intact Leaves

2009 ◽  
Vol 149 (3) ◽  
pp. 1452-1461 ◽  
Author(s):  
Bernhard Biskup ◽  
Hanno Scharr ◽  
Andreas Fischbach ◽  
Anika Wiese-Klinkenberg ◽  
Ulrich Schurr ◽  
...  
Keyword(s):  
High Throughput ◽  
Three Dimensional ◽  
Growth Cycle ◽  
Imaging Method ◽  
Three Dimensional Imaging ◽  
Leaf Discs ◽  
Intact Leaves

Radar coded aperture imaging for three dimensional target

2017 ◽  
Author(s):  
Shuo Chen ◽  
Chenggao Luo ◽  
Bin Deng ◽  
Yuliang Qin ◽  
Hongqiang Wang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Coded Aperture ◽  
Coded Aperture Imaging
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