scholarly journals Spectral DiffuserCam: lensless snapshot hyperspectral imaging with a spectral filter array

Optica ◽  
2020 ◽  
Vol 7 (10) ◽  
pp. 1298 ◽  
Author(s):  
Kristina Monakhova ◽  
Kyrollos Yanny ◽  
Neerja Aggarwal ◽  
Laura Waller
Keyword(s):  
Hyperspectral Imaging ◽  
Spectral Filter ◽  
Filter Array

scholarly journals Optimized Multi-Spectral Filter Array Based Imaging of Natural Scenes

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 1172 ◽  
Author(s):  
Yuqi Li ◽  
Aditi Majumder ◽  
Hao Zhang ◽  
M. Gopi
Keyword(s):  
Natural Scenes ◽  
Spectral Filter ◽  
Filter Array

scholarly journals Spectral image recovery from Spectral Filter Array cameras using LMMSE

2019 ◽  
Vol 2019 (1) ◽  
pp. 300-303
Author(s):  
Prakhar Amba ◽  
David Alleysson
Keyword(s):  
Near Infrared ◽  
Minimum Mean Square Error ◽  
Spectral Filter ◽  
Spectral Image ◽  
Linear Solution ◽  
Recovery Method ◽  
Filter Array ◽  
Single Sensor ◽  
Stable Linear ◽  
Hyperspectral Camera

A hyperspectral camera can record a cube of data with both spatial 2D and spectral 1D dimensions. Spectral Filter Arrays (SFAs) overlaid on a single sensor allows a snapshot version of a hyperspectral camera. But acquired image is subsampled both spatially and spectrally, and a recovery method should be applied. In this paper we present a linear model of spectral and spatial recovery based on Linear Minimum Mean Square Error (LMMSE) approach. The method learns a stable linear solution for which redundancy is controlled using spatial neighborhood. We evaluate results in simulation using gaussian shaped filter's sensitivities on SFA mosaics of upto 9 filters with sensitivities both in visible and Near-Infrared (NIR) wavelength. We show by experiment that by using big neighborhood sizes in our model we can accurately recover the spectra from the RAW images taken by such a camera. We also present results on recovered spectra of Macbeth color chart from a Bayer SFA having 3 filters.

Design and fabrication of Fourier spectral filter array for multispectral imaging

2016 ◽  
Author(s):  
Chuan Ni ◽  
Jie Jia ◽  
Keigo Hirakawa ◽  
Andrew Sarangan
Keyword(s):  
Multispectral Imaging ◽  
Spectral Filter ◽  
Filter Array

HDR Imaging Pipeline for Spectral Filter Array Cameras

2017 ◽  
pp. 401-412
Author(s):  
Jean-Baptiste Thomas ◽  
Pierre-Jean Lapray ◽  
Pierre Gouton
Keyword(s):  
Spectral Filter ◽  
Filter Array

Guided Filter Demosaicking For Fourier Spectral Filter Array

2016 ◽  
Vol 2016 (2) ◽  
pp. 1-5 ◽  
Author(s):  
Jie Jia ◽  
Chuan Ni ◽  
Andrew Sarangan ◽  
Keigo Hirakawa
Keyword(s):  
Guided Filter ◽  
Spectral Filter ◽  
Filter Array
Sign in / Sign up

Export Citation Format

Share Document