マルチバンドイメージスキャナの開発と近赤外分光イメージングへの応用：メロンの糖度分布可視化

DOI Web Site 被引用文献4件 参考文献13件

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タイトル別名
  • Development and Application of a Multi-Band Image Scanner: Visualization of Sugar Distribution of Melons
  • マルチバンドイメージスキャナ ノ カイハツ ト キンセキガイ ブンコウ イメージング エ ノ オウヨウ メロン ノ トウド ブンプ カシカ
  • Visualization of Sugar Distribution of Melons
  • メロンの糖度分布可視化

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A multi-band image scanner was developed in order to scan a sample at a specific wavelength. A band-pass filter inserted in the light path of the scanner enabled us to acquire the image information at the specific wavelength. An Andes melon was cut into halves and its cut surface was scanned at 676nm, at which the absorbance was reported to correlate inversely with sugar content. The intensity at each pixel of the acquired image was converted into absorbance based on the definition of absorbance. Then cylindrical flesh was extracted from the half-cut sample as a calibration sample. The image scanning and the Brix sugar content measurement of the calibration sample were repeated to acquire a series of data of the absorbance and the sugar content. Linear regression analysis was applied to these data to develop a calibration curve of sugar content versus absorbance. The calibration curve was applied to each pixel of the half-cut sample image in order to construct a sugar distribution map. In the same way, the calibration curve and the sugar distribution map of a Quincy melon were developed. The correlation coefficients of these calibration curves were 0.980 and 0.956, respectively, and their actual sugar distributions were accurately reflected in the sugar distribution maps. Therefore, it can be concluded that the multi-band image scanner is useful for the near-infrared imaging spectrometry.

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