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郑州大学电气与信息工程学院:基于类别信息引导的进化多任务波长选择与空间特征提取的高光谱成像菊花产地溯源

  • 2026-03-31 09:56:37
郑州大学电气与信息工程学院:基于类别信息引导的进化多任务波长选择与空间特征提取的高光谱成像菊花产地溯源

科研图文来源于药食同源透明计划,欢迎投稿。

编辑:陈敏/  主编:张大川、蒋羽鸽/  学术顾问:寇兴然

郑州大学电气与信息工程学院:基于类别信息引导的进化多任务波长选择与空间特征提取的高光谱成像菊花产地溯源

Journal of Food Composition and Analysis

近日,郑州大学电气与信息工程学院的Yunpeng Wei等人在Journal of Food Composition and Analysis上发表题为“Geographical origin traceability of chrysanthemum using hyperspectral imaging with class information-guided evolutionary multitasking wavelength selection and spatial feature extraction”的学术论文。

(点击页面左下角阅读原文,直达文献页面)

成果介绍

这篇研究给菊花产地溯源装上了“高光谱火眼金睛”!不同产地的菊花(亳菊、贡菊、杭白菊、怀菊)外观相似,但因生长环境差异,活性成分和品质天差地别,传统靠经验鉴别易出错。研究团队用高光谱成像技术给菊花“拍特殊 X 光片”,捕捉肉眼看不见的光谱信息。更聪明的是,他们设计了“类别信息引导的进化多任务算法”,能根据不同产地菊花的鉴别难度,精准挑选关键光谱波长,避免有用信息遗漏。同时还提取了菊花的纹理和颜色空间特征,就像既看“内在基因”又看“外在颜值”。最终光谱+空间特征融合后,用随机森林模型鉴别产地的准确率高达98.86%,几乎零失误。这个方法不仅无损、快速,还能批量检测,解决了市场上菊花产地造假的痛点,未来有望做成便携检测设备,让消费者买菊花时能轻松辨真伪、选好货。

菊花作为广受欢迎的花茶,富含对健康有益的生物活性成分,其品质和营养价值直接受产地影响。因此,本研究将高光谱成像(HSI)技术与化学计量学相结合,提出一种精准鉴别菊花不同产地的方法。首先,为充分挖掘光谱特征,本研究开发了类别信息引导的多任务粒子群优化(CIMPSO)框架。该框架采用类别信息准则评估类别不确定性,并为每个类别分配合适的变量选择数量,随后将多分类问题分解为多个二分类子任务,同时寻找区分每个特定类别与其他类别的特征波长。实验结果表明,所提出的 CIMPSO在多种机器学习模型上实现了94.16%–96.02%的优异准确率,性能优于多种波长选择方法。此外,为丰富特征信息,本研究还提取了空间纹理和颜色特征。借助更全面的特征信息,融合后的空 - 谱特征在随机森林(RF)模型上达到最优准确率,分类准确率和F1分数分别为98.86%和98.84%。结果表明,空间纹理和颜色特征也包含有助于菊花鉴别的有用信息,而融合光谱和空间信息的特征能更有效地表征产地属性。总体而言,本研究通过充分挖掘关键波长和空间信息,提出了一种新型菊花产地鉴别方法,可为食品工业中的无损质量评估提供有价值的技术参考,同时也将推动农业领域高光谱相关快速在线质量检测设备的发展。

关键词

菊花;产地溯源;高光谱成像;粒子群优化;空-谱特征融合

研究亮点

1、提出类别信息引导的多任务粒子群优化(CIMPSO)波长选择框架,通过评估类别不确定性为不同产地菊花分配最优特征波长数量,解决传统方法忽视类别鉴别难度差异的问题。

2、首次将空间特征(灰度共生矩阵纹理特征和 RGB/HSV颜色特征)与光谱特征融合,丰富了菊花产地鉴别的特征维度,提升了模型泛化能力。

3、CIMPSO框架结合知识迁移机制,实现多子任务间信息共享,在大幅降维(从288个波长降至29个)的同时保持高鉴别准确率(96.02%),优于SPA、iPLS、GA等传统波长选择方法。

4、融合空 - 谱特征的随机森林模型达到 98.86% 的产地鉴别准确率和 98.84% 的 F1 分数,实现菊花产地的高精度、无损、快速鉴别。

图文赏析

结论

本研究提出了一种基于高光谱成像的有效无损方法,通过提取关键光谱变量和空间图像信息来区分菊花的产地。首先,构建了CIMPSO变量选择框架,用于评估类别不确定性并寻找各类菊花的关键波长;其次,为充分挖掘特征信息,还提取了基于灰度共生矩阵(GLCM)的空间纹理和颜色信息。实验结果表明,所提出的CIMPSO优于多种变量选择方法,在随机森林模型上实现了96.02%的优异准确率;此外,引入空间信息后,模型性能达到最优分类准确率98.86%,相较于仅使用特征波长,准确率进一步提升了1.32%–3.07%。本研究证实,CIMPSO能有效从高光谱图像中筛选关键光谱特征,且空间图像信息也包含大量有助于提升菊花产地鉴别模型性能的有用信息。这些发现揭示了在基于高光谱成像的实际农业应用中构建特征融合的有效性,例如掺假检测、重金属污染评估、营养价值评价等领域。尽管取得了良好成果,本研究仍可能受到以下因素影响:其一,其他类别信息准则(如方差、信息熵)也可能有助于评估类别不确定性并预定义变量选择数量;其二,为促进其在农业和食品工业质量评估中的实时应用,轻量化设备和端到端模型的开发也值得研究;此外,实际应用中样本分布通常不平衡,可能导致预测结果不稳定和有偏差,因此,新型加权采样或样本重构方法的研究有望缓解这一现象,这也将是我们未来的研究方向。

参考文献

https://doi.org/10.1016/j.jfca.2024.107107

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  1. CONNECT:[ UseTime:0.000789s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000803s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000331s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000243s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000530s ]
  6. SELECT * FROM `set` [ RunTime:0.000235s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000616s ]
  8. SELECT * FROM `article` WHERE `id` = 485655 LIMIT 1 [ RunTime:0.000441s ]
  9. UPDATE `article` SET `lasttime` = 1776372323 WHERE `id` = 485655 [ RunTime:0.008909s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.003973s ]
  11. SELECT * FROM `article` WHERE `id` < 485655 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001020s ]
  12. SELECT * FROM `article` WHERE `id` > 485655 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001460s ]
  13. SELECT * FROM `article` WHERE `id` < 485655 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000923s ]
  14. SELECT * FROM `article` WHERE `id` < 485655 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003258s ]
  15. SELECT * FROM `article` WHERE `id` < 485655 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001596s ]
0.175897s