Multispectral color image capture using a liquid crystal tunable filter

JY Hardeberg, F Schmitt, H Brettel - Optical engineering, 2002‏ - spiedigitallibrary.org
We describe the experimental setup of a multispectral color image acquisition system
consisting of a professional monochrome CCD camera and a tunable filter in which the …

Hybrid-resolution multispectral imaging using color filter array

Y Murakami, M Yamaguchi, N Ohyama - Optics express, 2012‏ - opg.optica.org
Hybrid-resolution multispectral imaging is a framework to acquire multispectral images
through a reconstruction procedure using two types of measurement data with different …

Non-display bio-optic applications of liquid crystals

I Abdulhalim - Liquid Crystals Today, 2011‏ - Taylor & Francis
Liquid crystal (LC) devices have been largely developed for LC displays and in the last
decade for optical telecommunications; however, their application in the field of optical …

Photonic bandgap fiber bundle spectrometer

Q Hang, B Ung, I Syed, N Guo, M Skorobogatiy - Applied optics, 2010‏ - opg.optica.org
By using a photonic bandgap (PBG) fiber bundle and a monochrome CCD camera, we
experimentally demonstrate an all-fiber spectrometer. A total of 100 Bragg fibers that have …

[PDF][PDF] Filter selection for multispectral color image acquisition

JY Hardeberg - Journal of Imaging Science and Technology, 2004‏ - library.imaging.org
A relatively common approach to acquiring multispectral color images is to use a
monochrome digital camera coupled with a set of color filters, as shown in Fig. 1. Given the …

Investigation of liquid crystal Fabry–Perot tunable filters: design, fabrication, and polarization independence

S Isaacs, F Placido, I Abdulhalim - Applied Optics, 2014‏ - opg.optica.org
Liquid crystal Fabry–Perot tunable filters are investigated in detail, with special attention to
their manufacturability, design, tolerances, and polarization independence. The calculations …

On the spectral dimensionality of object colours

JY Hardeberg - Conference on Colour in Graphics, Imaging, and …, 2002‏ - library.imaging.org
How many components are needed to represent the spectral reflectance of a surface? What
is the dimension of a spectral reflectance? How many image channels are needed for the …

A subspace matching color filter design methodology for a multispectral imaging system

DY Ng, JP Allebach - IEEE Transactions on Image Processing, 2006‏ - ieeexplore.ieee.org
In this paper, we present a methodology to design filters for an imaging system to improve
the accuracy of the spectral measurements for families of reflective surfaces. We derive the …

Evaluation and optimal design of spectral sensitivities for digital color imaging

S Quan - 2002‏ - repository.rit.edu
The quality of an image captured by color imaging system primarily depends on three
factors: sensor spectral sensitivity, illumination and scene. While illumination is very …

Reflectance spectra reconstruction from trichromatic camera based on kernel partial least square method

G **ao, X Wan, L Wang, S Liu - Optics Express, 2019‏ - opg.optica.org
A novel spectral reflectance reconstruction method based on kernel partial least square
(KPLS) regression is proposed. The proposed method integrates the partial least square …