Snapshot compressive spectral imaging based on adaptive coded apertures

2018 ◽  
Author(s):  
Xu Ma ◽  
Hao Zhang ◽  
Xiao Ma ◽  
Gonzalo R. Arce ◽  
Tingfa Xu ◽  
...  
Keyword(s):  
Spectral Imaging ◽  
Coded Apertures

Snapshot Compressive ToF+Spectral Imaging via Optimized Color-Coded Apertures

2020 ◽  
Vol 42 (10) ◽  
pp. 2346-2360 ◽  
Author(s):  
Hoover Rueda-Chacon ◽  
Juan F. Florez-Ospina ◽  
Daniel L. Lau ◽  
Gonzalo R. Arce
Keyword(s):  
Spectral Imaging ◽  
Coded Apertures

scholarly journals Compressive spectral imaging approach using adaptive coded apertures

2020 ◽  
Vol 59 (7) ◽  
pp. 1924
Author(s):  
Hao Zhang ◽  
Xu Ma ◽  
Gonzalo R. Arce
Keyword(s):  
Spectral Imaging ◽  
Imaging Approach ◽  
Coded Apertures

scholarly journals High-dynamic range compressive spectral imaging by grayscale coded aperture adaptive filtering

2015 ◽  
Vol 35 (3) ◽  
pp. 53-60 ◽  
Author(s):  
Nelson Eduardo Diaz ◽  
Hoover Fabian Rueda Chacon ◽  
Henry Arguello Fuentes
Keyword(s):  
Dynamic Range ◽  
Imaging System ◽  
Three Dimensional ◽  
Spectral Imaging ◽  
Reconstruction Algorithm ◽  
High Dynamic Range ◽  
Data Cube ◽  
Coded Aperture ◽  
Coded Apertures

<p class="p1">The coded aperture snapshot spectral imaging system (CASSI) is an imaging architecture which senses the three dimensional informa-tion of a scene with two dimensional (2D) focal plane array (FPA) coded projection measurements. A reconstruction algorithm takes advantage of the compressive measurements sparsity to recover the underlying 3D data cube. Traditionally, CASSI uses block-un-block coded apertures (BCA) to spatially modulate the light. In CASSI the quality of the reconstructed images depends on the design of these coded apertures and the FPA dynamic range. This work presents a new CASSI architecture based on grayscaled coded apertu-res (GCA) which reduce the FPA saturation and increase the dynamic range of the reconstructed images. The set of GCA is calculated in a real-time adaptive manner exploiting the information from the FPA compressive measurements. Extensive simulations show the attained improvement in the quality of the reconstructed images when GCA are employed.  In addition, a comparison between traditional coded apertures and GCA is realized with respect to noise tolerance.</p>

scholarly journals Compressive Spectral Imaging Based on Hexagonal Blue Noise Coded Apertures

2020 ◽  
Vol 6 ◽  
pp. 749-763
Author(s):  
Hao Zhang ◽  
Xu Ma ◽  
Daniel L. Lau ◽  
Jianchen Zhu ◽  
Gonzalo R. Arce
Keyword(s):  
Spectral Imaging ◽  
Blue Noise ◽  
Coded Apertures
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