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Remote Sensing Technology and Application, Volume. 39, Issue 1, 34(2024)

Extraction of Individual Tree Crown based on UAV Tilt Photogrammetry

Shuxin CHEN1、*, Bingjie LIU2, Haiyi WANG1, Yong SU1,3, Qiuyi AI2, and Xin TIAN1
Author Affiliations
  • 1Institute of Forest Resource Information Techniques，Chinese Academy of Forestry，Beijing 100091，China
  • 2Forest Resources and Environmental Management National Forest and Grass Bureau Key Laboratory，Beijing Forestry University，Beijing 100083，China
  • 3College of Forestry，Southwest Forestry University，Kunming 650224，China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (46)
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    Figures & Tables(7)
    Schematic diagram of experimental sample plot

    Fig. 1. Schematic diagram of experimental sample plot

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    Canopy height model （CHM）

    Fig. 2. Canopy height model （CHM）

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    Vegetation area extraction results

    Fig. 3. Vegetation area extraction results

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    Comparison of pre- and post-processing effects of median filtering

    Fig. 3. Comparison of pre- and post-processing effects of median filtering

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    The extraction results of individual tree crown and visual interpretation results

    Fig. 4. The extraction results of individual tree crown and visual interpretation results

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    Watershed segmentation results based on CHM directly

    Fig. 5. Watershed segmentation results based on CHM directly

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    • Table 1. Visible vegetation index

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      Table 1. Visible vegetation index

      植被指数公式文献
      NGRDI(Normalized Green-Red Difference Index)（G+R）/（G-R）[40]
      ExG(Excess Green)2G-R-B[41]
      ExR(Excess Red)1.4R-G[42]
      ExGR(Excess Green minus Excess Red)ExG-ExR[43]
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    Shuxin CHEN, Bingjie LIU, Haiyi WANG, Yong SU, Qiuyi AI, Xin TIAN. Extraction of Individual Tree Crown based on UAV Tilt Photogrammetry[J]. Remote Sensing Technology and Application, 2024, 39(1): 34

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    Paper Information

    Category: Research Articles

    Received: Aug. 8, 2022

    Accepted: --

    Published Online: Jul. 22, 2024

    The Author Email: CHEN Shuxin (chensx@ifrit.ac.cn)

    DOI:10.11873/j.issn.1004-0323.2024.1.0034

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology