Denoising Autoencoder Aided Spectrum Reconstruction for Colloidal Quantum Dot Spectrometers

Recently, the colloidal quantum dot spectrometer has received much attention due to its advantages in cost, size, and operation. Yet, just like many other filter-based miniature spectrometers, spectrum reconstruction for the colloidal quantum dot spectrometer is typically prone to the measurement no...

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Bibliographic Details
Published in:IEEE sensors journal Vol. 21; no. 5; pp. 6450 - 6458
Main Authors: Zhang, Jinhui, Zhu, Xueyu, Bao, Jie
Format: Journal Article
Language:English
Published: New York IEEE 01.03.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Colloids
Correlation analysis
Datasets
denoising autoencoder
Image reconstruction
Machine learning
Miniature spectrometer
Noise
Noise measurement
Noise reduction
Quantum dots
Reconstruction
Reconstruction algorithms
Sensitivity
Sensors
Spectrometers
spectrum reconstruction
ISSN:1530-437X, 1558-1748
Online Access:Get full text
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Summary:Recently, the colloidal quantum dot spectrometer has received much attention due to its advantages in cost, size, and operation. Yet, just like many other filter-based miniature spectrometers, spectrum reconstruction for the colloidal quantum dot spectrometer is typically prone to the measurement noise due to the correlation of the filters. In this paper, we propose an effective spectrum reconstruction method for the colloidal quantum dot spectrometer, which can recover high-quality spectra in noisy environments. Specifically, we employ a denoising autoencoder, a machine-learning approach, to reduce noise in the filters' raw measurements before performing the reconstruction. After that, we reconstruct the spectra with the denoised data by a sparse recovery algorithm. We investigate the feasibility of the proposed reconstruction approach on a synthetic dataset and an experimental dataset collected by the colloidal quantum dot spectrometer. The results demonstrate that the proposed approach could deliver accurate reconstruction results even when data are corrupted with the measurement noise.
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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2020.3039973