不同品种猪肉pH值高光谱检测的模型传递修正算法
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

公益性行业(农业)科研专项经费资助项目(201003008)


Comparison of Transfer and Correctional Methods for Pork pH Value Detection of Different Varieties by Hyperspectral Imaging Technique
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    针对猪肉pH值高光谱检测模型受品种差异影响存在适用性差的问题,比较了不同算法,提出了一种基于光谱值校正的模型传递算法,以用于品种之间的模型传递。以山黑猪为主品种建立PLS模型,用该模型直接预测零号土猪样本时,预测相关系数仅为0.415,预测均方根误差为0.1804,预测精度较差。分别用斜率/截距(S/B)算法、模型更新算法以及光谱值校正传递算法对山黑猪模型进行修正或传递并进行了比较。采用S/B法时,山黑猪模型对零号土猪的预测相关系数仍为0.415,预测均方根误差由0.1804降至0.1343,下降了25.54%。采用模型更新算法时,把14个零号土猪样本添加到山黑猪校正集,修正后的山黑猪模型对零号土猪样本的预测性能较优,Rp由0.415提高至0.797,提高9205%,预测均方根误差由0.1804降低为0.1121,下降了37.86%。采用光谱-理化值共生距离法结合DS算法的光谱值校正传递算法时,山黑猪模型对零号土猪样本的预测相关系数由0.415提高至0.837,提高了101.69%,预测均方根误差由0.1804降低至0.0856,下降了52.55%。结果表明,光谱值校正的传递算法能够有效消除品种之间光谱差异,提高了山黑猪模型的适用性,且传递修正效果优于S/B算法和模型更新算法。

    Abstract:

    The calibration model of the pork quality based on hyperspectral data was easily affected by pork varieties and had poor applicability. So different algorithms were compared and a calibration transfer algorithm based on spectral value correction was proposed to improve the model applicability between different varieties. The PLS model for Shanhei pig was established, then was used to predict Linghao pig samples. Prediction accuracy was very poor with only Rp of 0.415, and RMSEP of 0.1804. To improve model applicability, S/B algorithm, model updating and transfer algorithm based on spectral value correction were respectively adopted and compared. For S/B algorithm, Rp of the model prediction for Linghao pig samples was still 0.415, and RMSEP decreased from 0.1804 to 0.1343, only down by 25.54%. For the model updating method, when 14 Linahao pig samples were added to the calibration dataset, the model prediction performance for Linghao pig samples achieved optimal. Rp increased to 0.797, improved by 92.05%, and RMSEP reduced to 0.1121, dropped by 37.86%. For transfer algorithm based on spectral value correction which combined spectral value physical value coexist distance with DS algorithm, Rp of the model prediction for Linghao pig samples increased to 0.837, rose by 101.69%, and RMSEP reduced to 0.0856, fell by 52.55%. The results showed that the transfer algorithm based on spectral value correction could eliminate the difference of spectral value of different varieties efficiently and improve the model applicability. It gave the best transfer and correction result than the two other algorithms.

    参考文献
    相似文献
    引证文献
引用本文

李小昱,钟雄斌,刘善梅,黄 涛,武振中.不同品种猪肉pH值高光谱检测的模型传递修正算法[J].农业机械学报,2014,45(9):216-222. Li Xiaoyu, Zhong Xiongbin, Liu Shanmei, Huang Tao, Wu Zhenzhong. Comparison of Transfer and Correctional Methods for Pork pH Value Detection of Different Varieties by Hyperspectral Imaging Technique[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(9):216-222

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2013-10-09
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2014-09-10
  • 出版日期: 2014-09-10