Spectroscopy and Spectral Analysis, Volume. 34, Issue 7, 1938(2014)

Visualization of the Chilling Storage Time for Turbot Flesh Based on Hyperspectral Imaging Technique

ZHU Feng-le*, ZHANG Hai-liang, SHAO Yong-ni, and HE Yong
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  • [in Chinese]
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    This study proposed a new method using visible and near infrared (Vis/NIR) hyperspectral imaging for the detection and visualization of the chilling storage time for turbot flesh rapid and nondestructively. A total of 160 fish samples with 8 different storage days were collected for hyperspectral image scanning, and mean spectra were extracted from the region of interest (ROI) inside each image. Partial least squares regression (PLSR) was applied as calibration method to correlate the spectral data and storage time for the 120 samples in calibration set. Then the PLSR model was used to predict the storage time for the 40 prediction samples, which achieved accurate results with determination coefficient (R2) of 0.966 2 and root mean square error of prediction (RMSEP) of 0.679 9 d. Finally, the storage time of each pixel in the hyperspectral images for all prediction samples was predicted and displayed in different colors for visualization based on pseudo-color images with the aid of an IDL program. The results indicated that hyperspectral imaging technique combined with chemometrics and image processing allows the determination and visualization of the chilling storage time for fish, displaying fish freshness status and distribution vividly and laying a foundation for the automatic processing of aquatic products.

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    ZHU Feng-le, ZHANG Hai-liang, SHAO Yong-ni, HE Yong. Visualization of the Chilling Storage Time for Turbot Flesh Based on Hyperspectral Imaging Technique[J]. Spectroscopy and Spectral Analysis, 2014, 34(7): 1938

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    Paper Information

    Received: Sep. 1, 2013

    Accepted: --

    Published Online: Jul. 22, 2014

    The Author Email: Feng-le ZHU (denith@126.com)

    DOI:10.3964/j.issn.1000-0593(2014)07-1938-05

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