U-Net模型对不同空间分辨率防护林提取精度的影响  

Influence of U-Net model on the accuracy of shelter forest extraction with different spatial resolutions

作　　者：王学文 赵庆展[1,2] 田文忠 龙翔 江萍 WANG Xuewen;ZHAO Qingzhan;TIAN Wenzhong;LONG Xiang;JIANG Ping(College of Information Science&Technology,Shihezi University,Shihezi 832000,Chin;Geospatial Information Engineering Research Center,Xinjiang Construction Corps,Shihezi 832000,China;College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,China)

机构地区：[1]石河子大学信息科学与技术学院,新疆石河子832000 [2]兵团空间信息工程技术研究中心,新疆石河子832000 [3]石河子大学机械电气工程学院,新疆石河子832000

出　　处：《测绘通报》2021年第6期39-43,共5页Bulletin of Surveying and Mapping

基　　金：新疆生产建设兵团科技计划(2017DB005);兵团空间信息工程技术研究中心创建项目(2016BA001);中央引导地方科技发展专项资金项目(201610011)。

摘　　要：针对当前无人机影像获取精度高但数据规模小的问题,本文提出通过U-Net模型探讨不同空间分辨率对防护林提取精度的影响。以CW-20复合翼无人机搭载Micro MAC12 Snap多光谱传感器获取的300 m(空间分辨率0.15 m)、400 m(空间分辨率0.20 m)、500 m(空间分辨率0.25 m)3种不同高度的遥感影像为例,试验结果证明,3种不同高度的影像提取精度误差在1.3%以内;MIoU误差在3.7%以内。空间分辨率对防护林提取精度的影响较小,高空间分辨率的影像数据并不能显著提升防护林的提取精度。本文为大规模农林业遥感监测的数据源获取提供了理论依据。Aiming at the problem of high-accuracy of UAV image acquisition but small data scale,this paper proposes to use U-Net model to explore the influence of different spatial resolution on the extraction accuracy of farmland shelterbelts.Take the CW-20 compound-wing UAV equipped with Micro MAC12 Snap multispectral sensor obtained three different height of 300 m(spatial resolution 0.15 m),400 m(spatial resolution 0.20 m)and 500 m(spatial resolution 0.25 m)as an example.For remote sensing images,experiments results have shown that the accuracy error of image extraction at three different height is within 1.3%,and the accuracy error of MIoU is within 3.7%.The spatial resolution had little effect on the extraction accuracy of shelterbelts.The image data with high spatial resolution can not significantly improve the extraction accuracy of shelterbelts.This study provides a theoretical basis for the acquisition of large-scale agricultural and forestry remote sensing monitoring data sources.

关 键 词：无人机 多光谱影像 空间分辨率 防护林提取 U-Net模型 

分 类 号：P237[天文地球—摄影测量与遥感]