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FOREST RESOURCES WANAGEMENT ›› 2017›› Issue (2): 23-27.doi: 10.13466/j.cnki.lyzygl.2017.02.005

• Scientific Research • Previous Articles     Next Articles

Extraction of DSM and Mean Forest Stand Height from UAV Imagery

ZHANG Yuxing1(), WANG Xuejun1, LIU Mingbo2   

  1. 1. Academy of Forest Inventory and Planning,State Forestry Administration,Beijing,10074,China
    2. Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing,100101,China
  • Received:2017-02-13 Revised:2017-04-01 Online:2017-04-28 Published:2020-10-10

Abstract:

In this research we use UAV stereo imagery to extract Digital Surface Model(DSM) of the study area which is located in the mountain areas of southwest Fengning county,Hebei province.Calibration points were set at bare ground through the imagery manual interpretation,followed by the elevation calibration of DSM using parameters fitted by the values of DSM and DEM at the corresponding calibration points.Then the forest height was extracted and averaged over each forest stand segment combining with forest survey results.This study demonstrates the feasibility of this methodology as a supplement of forest survey,which can be used to update mean forest stand height related indexes in a timely fashion.

Key words: UAV, stereo imagery, DSM, forest survey, forest stand height

CLC Number: