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Related Experiment Video

Updated: Dec 27, 2025

Sample Drift Correction Following 4D Confocal Time-lapse Imaging
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Online Correction Method for the Registration Error between TSMFTIS Detector and Interferogram.

Jun Cao1, Yan Yuan1, Lijuan Su1

  • 1Key Laboratory of Precision Opto-mechatronics Technology Sponsored by Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.

Sensors (Basel, Switzerland)
|February 27, 2020
PubMed
Summary
This summary is machine-generated.

Registration errors in Fourier transform imaging spectrometers (FTISs) can be corrected using a new robust least-square linear fitting method. This approach improves spectral accuracy by correcting interferogram deviations, enhancing the performance of FTIS systems.

Keywords:
interferogramregistration errorrobust least-square (RLS) linear fittingtemporally–spatially-modulated Fourier transform imaging spectrometers (TSMFTISs)

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Area of Science:

  • Spectroscopy
  • Optical Engineering
  • Signal Processing

Background:

  • Temporally-spatially modulated Fourier transform imaging spectrometers (TSMFTISs) offer high-throughput push-broom spectrometry.
  • Accurate spectral reconstruction relies on precise registration between the detector and interferogram.
  • Registration errors inevitably occur, altering optical path difference (OPD) values and affecting spectral data.

Purpose of the Study:

  • To develop an online method for correcting registration errors in TSMFTISs.
  • To analyze the impact of registration errors on reconstructed spectra.
  • To improve the accuracy of spectral recovery in TSMFTIS systems.

Main Methods:

  • A model of registration error was constructed to understand its effect on spectra.
  • Robust least-square linear fitting was employed for online OPD correction.
  • Simulations were conducted to validate the correction method's effectiveness.

Main Results:

  • The proposed method accurately corrects interferogram deviations caused by registration errors.
  • Simulations demonstrated a significant improvement in spectral recovery accuracy.
  • The method was successfully applied to experimental data, confirming its practical utility.

Conclusions:

  • The developed online correction method effectively addresses registration errors in TSMFTISs.
  • Accurate OPD values are crucial for reliable spectral restoration.
  • This technique enhances the precision and reliability of Fourier transform imaging spectrometry.