Geometric Super-resolution on Push-broom Hyperspectral Imaging for Plasma Optical Emission Spectroscopy

Songyue Shi, Xiaoxia Gong, Yan Mu, Kevin Finch, Gerardo Gamez Goytia

Research output: Contribution to journalArticle

Abstract

Push-broom hyperspectral imaging (Pb-HSI) is a powerful technique for obtaining the spectral information along with the spatial information simultaneously for various applications, from remote sensing to chemical imaging. Spatial resolution improvement is beneficial in many instances; however, typical solutions suffer from the limitation of geometric extent, lowered light throughput, or reduced field-of-view (FOV). Sub-pixel shifting (SPS) acquires higher-resolution images, compared to typical imaging approaches, from the deconvolution of low-resolution images acquired with a higher sampling rate. Furthermore, SPS is particularly suited for Pb-HSI due to its scanning nature. In this study, an SPS approach is developed and implemented on a Pb-HSI system for plasma optical emission spectroscopy. The preliminary results showed that a periodic deconvolution error was generated in the final SPS Pb-HSI images. The periodic error was traced back to random noise present in the raw/convoluted
Original languageEnglish
JournalJournal of Analytical Atomic Spectrometry
DOIs
StatePublished - Aug 2018

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