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林业资源管理 ›› 2018, Vol. 0 ›› Issue (6): 138-145.doi: 10.13466/j.cnki.lyzygl.2018.06.022

• 技术应用 • 上一篇    下一篇

不同地形校正方法对黑松分布遥感提取的影响

邓世晴1,2(), 陶欢2,3(), 李存军2,3, 刘荣1, 胡海棠2,3   

  1. 1.东华理工大学 测绘工程学院,南昌 330013
    2.北京农业信息技术研究中心,北京 100097
    3.国家农业信息化工程技术研究中心,北京 100097
  • 收稿日期:2018-09-03 修回日期:2018-10-22 出版日期:2018-12-28 发布日期:2020-09-27
  • 通讯作者: 陶欢
  • 作者简介:邓世晴(1994-),女,江西南昌人,在读硕士,主要从事林业遥感监测方面的研究。Email:D740774912 @163.com
  • 基金资助:
    国家重点研发计划(2016YFC0501601)

Effects of Different Topographic Correction Methods on the Distribution Extraction of Pinus thunbergii Using Remote Sensing Imagery

DENG Shiqing1,2(), TAO Huan2,3(), LI Cunjun2,3, LIU Rong1, HU Haitang2,3   

  1. 1. Faculty of Geomatics,East China University of Technology,Nanchang 330013,China
    2. Beijing Research Center for Information Technology in Agriculture,Beijing 100097,China
    3. National Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China
  • Received:2018-09-03 Revised:2018-10-22 Online:2018-12-28 Published:2020-09-27
  • Contact: TAO Huan

摘要:

以青岛黄岛区为研究区,利用资源三号卫星立体像对提取精细的DEM(Digital Elevation Model),使用5种地形校正模型(Teillet-回归,VECA,Cosine-C,C和SCS+C)对Quick Bird多光谱影像进行地形校正,并结合面向对象方法提取得到山区黑松的空间分布信息。结果表明:5种模型中,Quick Bird影像经VECA,SCS+C,C校正模型校正后山区阴影有较好的减弱效果,且山区黑松分布提取的精度均有所提高,其中以VECA模型的提取精度最佳,提取精度从70.25%提高到84.30%,提高了14.05%;Kappa系数从0.53提高到0.72,提高了0.19。本研究可为光学高分遥感影像在山区松树的分布提取上提供参考。

关键词: 地形校正, 数字高程模型, 黑松, 资源三号, Quick Bird影像

Abstract:

Five topographic correction models (Teillet-regression,VECA,Cosine-C,C,and SCS+C) were employed in the present study in Huangdao,Qingdao to calibrate the Quick-Bird multispectral images combining with fine Digital Elevation Model (DEM) generated by stereo images of domestic ZY-3 satellite.Then,we examined and compared the results of 5 models to evaluate the effects of different topographic correction models on extracting the distribution of pine.The results show that Quick-Bird images corrected by a combination of 2m DEM and 3 models (VECA,C and SCS+C) can better maintain imagery’s spectral characteristic and weaken the effect of mountain shadows than the other 2.Quick-Bird images calibrated by these 3 models have significantly improved the extraction accuracy of Pinus thunbergii.Among these 3 models,VECA is the best one for its elevation of the overall accuracy by 14.05% (from 70.25% to 84.30%) and the Kappa coefficient by 0.19 (from 0.53 to 0.72).This research can provide a reference for the extraction of Pinus thunbergii distribution by using remote sensing imagery.

Key words: topographic correction, Digital Elevation Model (DEM), pine tree, ZY-3, Quick Bird

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