Efficient Spatially-Variant Single-Pixel Imaging Using Block-Based Compressed Sensing

Author(s):  
Zhenyong Shin ◽  
Tong-Yuen Chai ◽  
Chang Hong Pua ◽  
Xin Wang ◽  
Sing Yee Chua
2021 ◽  
Vol 30 (02) ◽  
Author(s):  
Zhenyong Shin ◽  
Horng Sheng Lin ◽  
Tong-Yuen Chai ◽  
Xin Wang ◽  
Sing Yee Chua

2020 ◽  
Vol 13 (3) ◽  
pp. 032007
Author(s):  
Yu-Xuan Ren ◽  
Cihang Kong ◽  
Hongsen He ◽  
Xinglin Zeng ◽  
Kevin K. Tsia ◽  
...  

2006 ◽  
Author(s):  
Dharmpal Takhar ◽  
Jason Laska ◽  
Dror Baron ◽  
Michael Wakin ◽  
Marco F. Duarte ◽  
...  

2020 ◽  
Vol 10 (7) ◽  
pp. 2427
Author(s):  
Rongbin She ◽  
Wenquan Liu ◽  
Guanglu Wei ◽  
Yuanfu Lu ◽  
Guangyuan Li

We demonstrate terahertz single-pixel imaging is improved by using a photomodulator based on silicon passivated with SiO 2 . By exploring various SiO 2 thicknesses, we show that the modulation factor of the as-fabricated terahertz photomodulator can reach 0.9, three times that based on bare silicon. This improvement originates from chemical passivation, as well as anti-reflection. Single-pixel imaging experiments based on the compressed sensing method show that reconstructed images adopting the new photomodulator have better quality than the conventional terahertz modulator based on bare silicon. Since the passivation process is routine and low cost, we expect this work will reduce the cost of terahertz photomodulator and single-pixel THz imaging, and advance their applications.


2018 ◽  
Vol 160 ◽  
pp. 07002
Author(s):  
Shao Hui ◽  
Wu Dongsheng ◽  
Chen Jie ◽  
Li Zhao ◽  
Xu Xiaoxue ◽  
...  

In order to get the trajectory of moving object using single-pixel imaging system, an algorithm is proposed. The same pseudorandom masks are employed to illuminate the different time scene. A time weighted sum of the background correction signals is employed to get the trajectory information using compressed sensing (CS) method. In ideal situation, we can obtain other parameters (e.g., speed, orientation) besides the trajectory. However, the reflective intensity of the object can be change due to the reflective angle change caused by the motion in some situations. This will mislead for achieving the speed, orientation parameters. In order to eliminate this effect, a division method is utilized. At last, the computer simulation results prove the effect validity of the proposed algorithm.


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