期刊论文

中文

中南林业调查规划

1003-6075

2024

43

01

38-43

10.16166/j.cnki.cn43-1095.2024.01.009

2020NK2051:湖南省科技厅重点领域研发计划

本校为第一机构

基于无人机遥感影像,以内蒙古自治区赤峰市喀喇沁旗旺业甸林场实验样地为例,提取树冠信息,再利用可见光植被指数对影像进行增强,以样地与单木两个尺度进行提取研究,并对提取精度进行分析.结果表明:影像灰度值标准差提高了 162.61%;使用增强后的影像进行多尺度分割对林分树冠进行提取,精度提高了 14.22%,对单木树冠进行提取,精度提高了 11.48%.使用基于无人机可见光植被指数的影像增强方法可消除或降低无人机影像容易受到阴影及树冠间交叉重叠的影响,对利用遥感技术进行森林资源调查具有重要意义.

At both the plot scale and single tree scale,we extracted tree crown information through UAV re-mote sensing images from experimental plots of Wangyedian Forest Farm in Haraqin Banner,Chifeng City,In-ner Mongolia Autonomous Region,and then used the visible light vegetation index to enhance the images.The results showed that the standard deviation of the images'gray values improved by 162.61％.The accuracy had in-creased by 14.22％because of using the enhanced multi-scaled image segments to extract forest stand crowns.As to single tree crowns,th...