Real-time adaptive coded aperture: application to the compressive spectral imaging system

2020 ◽  
Author(s):  
Yuhan Zhang ◽  
Tingfa Xu ◽  
Xi Wang ◽  
Chenguang Pan ◽  
Jianhua Hao ◽  
...  
Keyword(s):  
Real Time ◽  
Imaging System ◽  
Spectral Imaging ◽  
Coded Aperture

Development of a two-band spectral imaging system for real-time citrus canker detection

2012 ◽  
Vol 108 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Jianwei Qin ◽  
Thomas F. Burks ◽  
Xuhui Zhao ◽  
Nikhil Niphadkar ◽  
Mark A. Ritenour
Keyword(s):  
Real Time ◽  
Imaging System ◽  
Spectral Imaging ◽  
Citrus Canker

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>

Optimization of a coded aperture coherent scatter spectral imaging system for medical imaging

2015 ◽  
Author(s):  
Joel A. Greenberg ◽  
Manu N. Lakshmanan ◽  
David J. Brady ◽  
Anuj J. Kapadia
Keyword(s):  
Medical Imaging ◽  
Imaging System ◽  
Spectral Imaging ◽  
Coded Aperture ◽  
Coherent Scatter

Compact AOTF-based spectral imaging system for medical endoscopic analysis

2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Alexander Machihin ◽  
Vitold Pozhar ◽  
Vladislav Batshev
Keyword(s):  
Spectral Analysis ◽  
Image Registration ◽  
Real Time ◽  
Imaging System ◽  
Spectral Imaging ◽  
Tunable Filters ◽  
Image Distortion ◽  
Spectral Features ◽  
Spectral Image ◽  
Reliable Detection

AbstractA prototype of a spectral imaging module is described which can be attached to conventional rigid and flexible medical endoscopes. It is based on acousto-optic tunable filters (AOTF) and provides fast spectral image registration at an arbitrary series of wavelengths. The main advantage of the device is the minimization of spatial and spectral image distortion by use of a specialized double AOTF monochromator. These properties ensure immediate and reliable detection of spectral features in any image pixel. Real-time spectral analysis, in addition to spectral visualization, provides the opportunity to make medical photoluminescence diagnostics more effective.

Real-time Multi-spectral Imaging System Based on Multi-channel Narrow-band Filter and Color Image Sensor

2017 ◽  
Vol 46 (4) ◽  
pp. 411001
Author(s):  
廖乘胜 LIAO Cheng-sheng ◽  
吴正 WU Zheng ◽  
曾立波 ZENG Li-bo ◽  
吴琼水 WU Qiong-shui
Keyword(s):  
Real Time ◽  
Imaging System ◽  
Narrow Band ◽  
Color Image ◽  
Spectral Imaging ◽  
Image Sensor ◽  
Band Filter ◽  
Narrow Band Filter
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