Application research on enhancing near-infrared micro-imaging quality by 2nd derivative

Dong Wang; Zhi-hong Ma; Liu Zhao; Bei-hong Wang; Ping Han; Li-gang Pan; Ji-hua Wang

doi:10.1117/12.2032599

30 August 2013 Application research on enhancing near-infrared micro-imaging quality by 2^nd derivative

Dong Wang, Zhi-hong Ma, Liu Zhao, Bei-hong Wang, Ping Han, Li-gang Pan, Ji-hua Wang

Proceedings Volume 8910, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications; 89100J (2013) https://doi.org/10.1117/12.2032599
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Near-infrared micro-imaging will not only provide the sample’s spatial distribution information, but also the spectroscopic information of each pixel. In this thesis, it took the artificial sample of wheat flour and formaldehyde sodium sulfoxylate distribution given for example to research the data processing method for enhancing the quality of near-infrared micro-imaging. Near-infrared spectroscopic feature of wheat flour and formaldehyde sodium sulfoxylate being studied on, compare correlation imaging and 2^nd derivative imaging were applied in the imaging processing of the near-infrared micro-image of the artificial sample. Furthermore, the two methods were combined, i.e. 2^nd derivative compare correlation imaging was acquired. The result indicated that the difference of the correlation coefficients between the two substances, i.e. wheat flour and formaldehyde sodium sulfoxylate, and the reference spectrum has been increased from 0.001 in compare correlation image to 0.796 in 2^nd derivative compare correlation image respectively, which enhances the imaging quality efficiently. This study will, to some extent, be of important reference significance to near-infrared micro-imaging method research of agricultural products and foods.

Citation Download Citation

Dong Wang, Zhi-hong Ma, Liu Zhao, Bei-hong Wang, Ping Han, Li-gang Pan, and Ji-hua Wang "Application research on enhancing near-infrared micro-imaging quality by 2^nd derivative", Proc. SPIE 8910, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications, 89100J (30 August 2013); https://doi.org/10.1117/12.2032599

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KEYWORDS

Near infrared

Sodium

Analytical research

Image quality

Agriculture

Near infrared spectroscopy

Image enhancement

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