食品科学 ›› 2020, Vol. 41 ›› Issue (2): 315-320.doi: 10.7506/spkx1002-6630-20190625-313

• 安全检测 • 上一篇    下一篇

基于改进光谱角制图算法的乳粉安全非定向筛查新方法

宗婧,黄志轩,陈晓宇,陈达   

  1. (1.天津大学精密仪器与光电子工程学院,天津 300072;2.中国民航大学飞机防火及应急研究所,天津 300300)
  • 出版日期:2020-01-25 发布日期:2020-01-19
  • 基金资助:
    “十三五”国家重点研发计划重点专项(2018YFF01011701);国家自然科学基金面上项目(21973111;61378048); 国家自然科学基金青年科学基金项目(21305101)

A New Non-targeted Screening Method for Milk Powder Safety Based on Improved Spectral Angle Mapping

ZONG Jing, HUANG Zhixuan, CHEN Xiaoyu, CHEN Da   

  1. (1. School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China; 2. Center for Aircraft Fire and Emergency, Civil Aviation University of China, Tianjin 300300, China)
  • Online:2020-01-25 Published:2020-01-19

摘要: 提出一种基于移动窗口光谱角制图的拉曼高光谱成像方法(moving window spectral angle mapping Raman hyperspectral imaging method,MWSAM-RHIM),以实现乳粉安全的非定向筛查,有效弥补了传统定向检测方法的不足。在MWSAM-RHIM中,使用改进的光谱角制图算法计算待测样品光谱相似性,将超出正常阈值范围的像素点标记为掺杂,并生成可视化的二值图像。结果表明,MWSAM-RHIM对阴性和阳性样品的识别率均达到了93.3%,说明此方法可以满足乳制品安全的非定向筛查需求,并为其他食品样品的快速筛查提供一种新思路。

关键词: 拉曼高光谱成像, 乳粉安全, 光谱角制图, 非定向筛查, 食品安全

Abstract: In this paper, a moving window spectral angle mapping-based Raman hyperspectral imaging method (MWSAM-RHIM) was proposed for non-targeted screening for milk powder safety, which could effectively compensate for the shortcomings of traditional targeted detection methods. In MWSAM-RHIM, an improved spectral angle mapping algorithm was used to calculate the spectral similarity of unknown samples. The pixels beyond the threshold were marked as adulterated to generate a visual binary image. The results showed that the recognition rates of negative and positive samples by MWSAM-RHIM method both reached 93.3%, indicating that this method can meet the needs of non-targeted screening for safety of dairy products and provide a new idea for rapid screening of other food samples.

Key words: Raman hyperspectral imaging, milk powder safety, spectral angle mapping, non-targeted screening, food safety

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