基于室内高光谱激光雷达的典型树种叶片光谱观测与分类

IF 0.6 4区 物理与天体物理 Q4 OPTICS 红外与毫米波学报 Pub Date : 2020-01-01 DOI:10.11972/J.ISSN.1001-9014.2020.03.016
HU Pei-lun, Chen Yu-Wei, Jiang Changhui, Lin Qi-Nan, Li Wei, QI Jian-Bo, YU Lin-Feng, Shao Hui, Huang Hua-guo
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引用次数: 5

摘要

Hyperspectral laser radar combines the characteristics of LiDAR and hyperspectral informa‐ tion,and provides more accurate remote sensing detection methods of the extraction of vegetation physiological and biochemical parameters,but its application potential has not been fully explored. In 文章编号:1001-9014(2020)03-0372-09 DOI:10. 11972/j. issn. 1001-9014. 2020. 03. 016 收稿日期:2020⁃ 02⁃ 19,修回日期:2020⁃ 03⁃ 19 Received date:2020⁃ 02⁃ 19,Revised date:2020⁃ 03⁃ 19 基金项目:国家重点研发计划项目(2017YFC0504003-4);国家自然科学基金(41571332) Foundation items:Supported by National key research and development project(2017YFC0504003-4);the National Natural Science Foundation of China(41571332) 作者简介(Biography):胡佩纶(1995-),男,江西宜春人,硕士研究生,主要研究领域为:植被定量遥感 . Email:hupeilun_818@163. com。 *通讯作者(Corresponding author):Email:huaguo_huang@bjfu. edu. cn 3期 胡佩纶 等:基于室内高光谱激光雷达的典型树种叶片光谱观测和分类 this paper,the leaves of 10 typical tree species in Beijing are taken as samples to carry out the leaf ob‐ servation experiment of indoor hyperspectral laser radar. And the tree species classification research is carried out to provide the basis of the future forestry application of hyperspectral laser radar. In this study,the hyperspectral data of tunable hyperspectral LiDAR(HSL)was carried out and compared with the data measured by ASD spectrometer. Secondly,10 kinds of leaves were classified by random forest method. In the process,the total spectral index is obtained by combining all the bands and some sensitive bands with the spectral index. The results show that:(a)HSL is consistent with ASD spectra observed in the band 650~1 000 nm(71 channels)(R=0. 9525~0. 993 2,RMSE=0. 058 7);(b)The classification accuracy of the original band reflectivity is 78. 31%,there into the maximum contribu‐ tion rate of the classification band is 650~750 nm,and the classification accuracy is 94. 18% using this band which shows that it is very effective in classify tree species by using red edge band(650~750 nm);(c)the bands sensitive to tree species classification are 680 nm,685 nm,690 nm,715 nm,720 nm,725 nm,730 nm;(d)When we combine the spectral index and vegetation index,the classifica‐ tion accuracy is 82. 65%. This study shows that at the single leaf level,hyperspectral LiDAR can accu‐ rately reflect the spectral characteristics of the target leaves and classify the species of different trees ef‐ fectively. It is possible to extract physiological and biochemical parameters of targets for the future field applications accurately.
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Spectral observation and classification of typical tree species leaves based on indoor hyperspectral lidar
Hyperspectral laser radar combines the characteristics of LiDAR and hyperspectral informa‐ tion,and provides more accurate remote sensing detection methods of the extraction of vegetation physiological and biochemical parameters,but its application potential has not been fully explored. In 文章编号:1001-9014(2020)03-0372-09 DOI:10. 11972/j. issn. 1001-9014. 2020. 03. 016 收稿日期:2020⁃ 02⁃ 19,修回日期:2020⁃ 03⁃ 19 Received date:2020⁃ 02⁃ 19,Revised date:2020⁃ 03⁃ 19 基金项目:国家重点研发计划项目(2017YFC0504003-4);国家自然科学基金(41571332) Foundation items:Supported by National key research and development project(2017YFC0504003-4);the National Natural Science Foundation of China(41571332) 作者简介(Biography):胡佩纶(1995-),男,江西宜春人,硕士研究生,主要研究领域为:植被定量遥感 . Email:hupeilun_818@163. com。 *通讯作者(Corresponding author):Email:huaguo_huang@bjfu. edu. cn 3期 胡佩纶 等:基于室内高光谱激光雷达的典型树种叶片光谱观测和分类 this paper,the leaves of 10 typical tree species in Beijing are taken as samples to carry out the leaf ob‐ servation experiment of indoor hyperspectral laser radar. And the tree species classification research is carried out to provide the basis of the future forestry application of hyperspectral laser radar. In this study,the hyperspectral data of tunable hyperspectral LiDAR(HSL)was carried out and compared with the data measured by ASD spectrometer. Secondly,10 kinds of leaves were classified by random forest method. In the process,the total spectral index is obtained by combining all the bands and some sensitive bands with the spectral index. The results show that:(a)HSL is consistent with ASD spectra observed in the band 650~1 000 nm(71 channels)(R=0. 9525~0. 993 2,RMSE=0. 058 7);(b)The classification accuracy of the original band reflectivity is 78. 31%,there into the maximum contribu‐ tion rate of the classification band is 650~750 nm,and the classification accuracy is 94. 18% using this band which shows that it is very effective in classify tree species by using red edge band(650~750 nm);(c)the bands sensitive to tree species classification are 680 nm,685 nm,690 nm,715 nm,720 nm,725 nm,730 nm;(d)When we combine the spectral index and vegetation index,the classifica‐ tion accuracy is 82. 65%. This study shows that at the single leaf level,hyperspectral LiDAR can accu‐ rately reflect the spectral characteristics of the target leaves and classify the species of different trees ef‐ fectively. It is possible to extract physiological and biochemical parameters of targets for the future field applications accurately.
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CiteScore
1.20
自引率
14.30%
发文量
4258
审稿时长
2.9 months
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