Horizontal Positional Accuracy of Google Earth's High-Resolution Imagery Archive.
Horizontal Positional Accuracy of Google Earth's High-Resolution Imagery Archive.
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DOI：
10.3390/s8127973
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发表时间：
2008-12-08
期刊：
影响因子：
--
通讯作者：
Potere D
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文献类型：
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作者：
Potere D
谷歌地球现在拥有高分辨率的图像，覆盖地球陆地面积的20%和超过三分之一的人口。这一当代高分辨率档案是一个重要的，迅速扩大，免费和基本上未开发的科学探究资源。为了提高这个档案的科学效用，我们通过比较Google Earth与Landsat GeoCover场景，在全球109个城市的436个控制点的全球样本上，解决水平位置精度（地理配准）问题。陆地卫星地理覆盖是一种正射纠正产品，已知绝对位置精度小于50米均方根误差（RMSE）。相对于Landsat GeoCover，436个Google Earth控制点的位置精度为39.7米RMSE（误差幅度从0.4米到171.6米不等）。从卫星图像中获得的控制点的RMSE精度为22.8米，这比基于航空摄影的48个控制点（41.3米RMSE; t检验p值< 0.01）要精确得多。较发达国家控制点的精度为24.1米RMSE，显著高于发展中国家控制点的精度（44.4米RMSE; t检验p值< 0.01）。这些研究结果表明，谷歌地球高分辨率图像的水平位置精度足以评估世界上大多数城市周边地区的中分辨率遥感产品。
Google Earth now hosts high-resolution imagery that spans twenty percent of the Earth's landmass and more than a third of the human population. This contemporary high-resolution archive represents a significant, rapidly expanding, cost-free and largely unexploited resource for scientific inquiry. To increase the scientific utility of this archive, we address horizontal positional accuracy (georegistration) by comparing Google Earth with Landsat GeoCover scenes over a global sample of 436 control points located in 109 cities worldwide. Landsat GeoCover is an orthorectified product with known absolute positional accuracy of less than 50 meters root-mean-squared error (RMSE). Relative to Landsat GeoCover, the 436 Google Earth control points have a positional accuracy of 39.7 meters RMSE (error magnitudes range from 0.4 to 171.6 meters). The control points derived from satellite imagery have an accuracy of 22.8 meters RMSE, which is significantly more accurate than the 48 control-points based on aerial photography (41.3 meters RMSE; t-test p-value < 0.01). The accuracy of control points in more-developed countries is 24.1 meters RMSE, which is significantly more accurate than the control points in developing countries (44.4 meters RMSE; t-test p-value < 0.01). These findings indicate that Google Earth high-resolution imagery has a horizontal positional accuracy that is sufficient for assessing moderate-resolution remote sensing products across most of the world's peri-urban areas.
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影响因子：
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作者：
Compieta, P.;Di Martino, S.;Kechadi, T.
通讯作者：
Kechadi, T.
影响因子：
1.3
作者：
Tucker, CJ;Grant, DM;Dykstra, JD
通讯作者：
Dykstra, JD
影响因子：
8.8
作者：
Guralnick RP;Hill AW;Lane M
通讯作者：
Lane M
影响因子：
13.5
作者：
Masek, JG;Honzak, M;Pak, E
通讯作者：
Pak, E
DOI：
10.3390/s7112519
发表时间：
2007-10-31
期刊：
Sensors (Basel, Switzerland)
影响因子：
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作者：
Thenkabailc PS;Biradar CM;Noojipady P;Cai X;Dheeravath V;Li Y;Velpuri M;Gumma M;Pandey S
通讯作者：
Pandey S