@misc{10481/86745,
year = {2014},
month = {4},
url = {https://hdl.handle.net/10481/86745},
abstract = {This work focuses on the improvement of a multispectral imaging sensor based on transverse field
detectors (TFDs). We aimed to achieve a higher color and spectral accuracy in the estimation of spectral
reflectances from sensor responses. Such an improvement was done by combining these recently developed
silicon-based sensors with color filter arrays (CFAs). Consequently, we sacrificed the filter-less full
spatial resolution property of TFDs to narrow down the spectrally broad sensitivities of these sensors.We
designed and performed several experiments to test the influence of different design features on the estimation
quality (type of sensor, tunability, interleaved polarization, use of CFAs, type of CFAs, number of
shots), some of which are exclusive to TFDs.We compared systems that use a TFD with systems that use
normal monochrome sensors, both combined with multispectral CFAs as well as common RGB filters
present in commercial digital color cameras. Results showed that a system that combines TFDs and
CFAs performs better than systems with the same type of multispectral CFA and other sensors, or even
the same TFDs combined with different kinds of filters used in common imaging systems. We propose
CFA+TFD-based systems with one or two shots, depending on the possibility of using longer capturing
times or not. Improved TFD systems thus emerge as an interesting possibility for multispectral acquisition,
which overcomes the limited accuracy found in previous studies.},
organization = {Spanish Ministry of
Economy and Competitiveness through the research
project DPI2011-23202},
publisher = {Optica},
keywords = {Spectral imaging},
keywords = {Transverse field detectors},
keywords = {Color filters},
title = {Combining transverse field detectors and color filter arrays to improve multispectral imaging systems},
doi = {https://doi.org/10.1364/AO.53.000C14},
author = {Martínez Domingo, Miguel Ángel and Valero Benito, Eva María and Hernández Andrés, Javier and Romero Mora, Francisco Javier and Langfelder, Giacomo},
}