Deconvolution in Acousto-Optical Tunable Filter Spectrometry

作者：Katrasnik Jaka^*; Pernus Franjo; Likar Bostjan

来源：Applied Spectroscopy, 2010, 64(11): 1265-1273.

DOI：10.1366/000370210793334945

• Deconvolution
• Spectrometry
• Hyperspectral imaging
• Acousto-optical tunable filters
• AOTF
• Resolution enhancement
• Wiener deconvolution
• ForWaRD deconvolution
• Richardson-Lucy deconvolulion
• Wavelet-Lucy deconvolution

Spectrometers and spectral imaging systems based on the acousto-optical tunable filter (AOTF) are becoming commonly used in many different fields in which high spectral resolution is crucial, e.g., laser-induced breakdown spectroscopy, Raman spectroscopy, and absorption spectroscopy of gases. As AOTFs have many advantages over other spectroscopic instruments hut lack spectral resolution, a procedure for resolution enhancement, composed of point spread function characterization and spectrum preprocessing and deconvolution, is proposed. Wiener, Fourier-wavelet regularized (ForWaRD), Richardson-Lucy, and Wavelet-Lucy deconvolution methods were tested and their performances assessed with two deconvolution quality measures: resolution enhancement and noise amplification. It was shown that the proposed spectral resolution enhancement is feasible and gives good results for line spectra and highly dynamic spectra.

• 出版日期2010-11