Non-uniform refractive index field measurement based on light field imaging technique

2018 ◽  
Author(s):  
梦婕 周 ◽  
晓坤 杜 ◽  
玉民 张 ◽  
东 许
Keyword(s):  
Refractive Index ◽  
Field Measurement ◽  
Light Field ◽  
Imaging Technique ◽  
Light Field Imaging ◽  
Field Imaging

Anti-cat-eye effect imaging technique based on the light-field imaging technique

2019 ◽  
Vol 28 (05) ◽  
pp. 1
Author(s):  
Lei Wang ◽  
Qing Ye ◽  
Xianan Dou ◽  
Jinsong Nie ◽  
Xiaoquan Sun
Keyword(s):  
Light Field ◽  
Imaging Technique ◽  
Light Field Imaging ◽  
Field Imaging

Application of Landweber Method for Three-Dimensional Temperature Field Reconstruction Based on the Light-Field Imaging Technique

2018 ◽  
Vol 140 (8) ◽  
Author(s):  
Xing Huang ◽  
Hong Qi ◽  
Xiao-Luo Zhang ◽  
Ya-Tao Ren ◽  
Li-Ming Ruan ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Light Field ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Computational Time ◽  
Reconstruction Technique ◽  
Absorbing Media ◽  
Light Field Imaging ◽  
Landweber Method ◽  
Field Imaging

Combined with the light-field imaging technique, the Landweber method is applied to the reconstruction of three-dimensional (3D) temperature distribution in absorbing media theoretically and experimentally. In the theoretical research, simulated exit radiation intensities on the boundary of absorbing media according to the computing model of light field are employed as inputs for inverse analysis. Compared with the commonly used iterative methods, i.e., the least-square QR decomposition method and algebraic reconstruction technique (ART), the Landweber method can produce reconstruction results with better quality and less computational time. Based on the numerical study, an experimental investigation is conducted to validate the suitability of the proposed method. The temperature distribution of the ethylene diffusion flame is reconstructed by using the Landweber method from the flame image captured by a light-field camera. Good agreement was found between the reconstructed temperature distribution and the measured temperature data obtained by a thermocouple. All the experimental results demonstrate that the temperature distribution of ethylene flame can be reconstructed reasonably by using the Landweber method combined with the light-field imaging technique, which is proven to have potential for the use in noncontract measurement of temperature distribution in practical engineering applications.

Experimental study on auto-focusing and ranging based on light-field imaging technique

2017 ◽  
Author(s):  
Jiang M. Xu ◽  
Shi Y. Hu ◽  
Fei Feng ◽  
Jing T. Ma ◽  
Zun L. Liu
Keyword(s):  
Experimental Study ◽  
Light Field ◽  
Imaging Technique ◽  
Light Field Imaging ◽  
Field Imaging ◽  
Auto Focusing

EPIModules on a Geodesic: Toward 360° Light-Field Imaging

2019 ◽  
Vol 2019 (3) ◽  
pp. 636-1-636-6
Author(s):  
H. Harlyn Baker ◽  
Gregorij Kurillo ◽  
Allan Miller ◽  
Alessandro Temil ◽  
Tom Defanti ◽  
...  
Keyword(s):  
Light Field ◽  
Light Field Imaging ◽  
Field Imaging

scholarly journals Determining 3D Flow Fields via Multi-camera Light Field Imaging

10.3791/4325 ◽  
2013 ◽  
Author(s):  
Tadd T. Truscott ◽  
Jesse Belden ◽  
Joseph R. Nielson ◽  
David J. Daily ◽  
Scott L. Thomson
Keyword(s):  
Light Field ◽  
Flow Fields ◽  
3D Flow ◽  
Light Field Imaging ◽  
Field Imaging
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