土地覆被遥感产品真实性检验方法对比

王冰泉; 冉有华

doi:10.11873/j.issn.1004-0323.2022.1.0196

閬ユ劅鎶�鏈笌搴旂敤鈥衡�� 2022, Vol. 37 鈥衡�� Issue (1): 196-204.DOI: 10.11873/j.issn.1004-0323.2022.1.0196

鈥� 闈掍績浼氬崄鍛ㄥ勾涓撴爮鈥� 涓婁竴绡� 涓嬩竴绡�

鍦熷湴瑕嗚閬ユ劅浜у搧鐪熷疄鎬ф楠屾柟娉曞姣�

鐜嬪啺娉�^1,²(),鍐夋湁鍗�^1,²()

^1.涓浗绉戝闄㈣タ鍖楃敓鎬佺幆澧冭祫婧愮爺绌堕櫌锛岀敇鑲� 鍏板窞 730000
^2.涓浗绉戝闄㈠ぇ瀛︼紝鍖椾含 100049

鏀剁鏃ユ湡:2021-02-18 淇洖鏃ユ湡:2021-12-27 鍑虹増鏃ユ湡:2022-02-20 鍙戝竷鏃ユ湡:2022-04-08
閫氳浣滆��: 鍐夋湁鍗�
浣滆�呯畝浠�:鐜嬪啺娉夛紙1997-锛夛紝鐢凤紝娌冲崡鍗楅槼浜猴紝纭曞＋鐮旂┒鐢�, 涓昏浠庝簨鐢熸�侀仴鎰熺爺绌躲�侲?mail: wangbingquan@nieer.ac.cn
鍩洪噾璧勫姪:
鍥藉鑷劧绉戝鍩洪噾椤圭洰(42071421);楂樺垎杈ㄧ巼瀵瑰湴瑙傛祴绯荤粺鍥藉閲嶅ぇ涓撻」(21?Y20B01?9001?19/22)

Comparison of Accuracy Assessment Methods of Remote Sensing based Land Cover Products

Bingquan Wang^1,²(),Youhua Ran^1,²()

^1.Northwest Institution of Eco-Environment and Resources锛孋hinese Academy of Sciences锛孡anzhou 730000锛孋hina
^2.University of Chinese Academy of Sciences锛孊eijing 100049锛孋hina

Received:2021-02-18 Revised:2021-12-27 Online:2022-02-20 Published:2022-04-08
Contact: Youhua Ran

鎽樿/Abstract

鎽樿锛�

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鍏抽敭璇�: 鎶芥牱鏂瑰紡, 鏍锋湰閲�, 鐪熷疄鎬ф楠�, ESA CCI?LC, GlobeLand30

Abstract:

Accuracy assessment is important for the application of land cover products. In practice锛� there are many differences for sample size and spatial distribution of the reference data used for accuracy assessment锛� and the impact of this difference on accuracy assessment results is not very clear. This paper validated the ESA CCI-LC using GlobeLand30 as the reference data in China. We test the impact of sample size锛� sampling model锛� and sample unit on the overall accuracy and various types of accuracy. The results are as following. Firstly锛� the sample size makes a difference to the accuracy assessment results. The overall accuracy based on point sample is close to that of the theoretical sample size while the sample size in half 锛坅bout 600 sample points锛夛紝 however锛� the sensitive degree of different classes of precision on the sample size is different锛� classes with low area weight are more sensitive to sample size锛� especially stratified random sampling used in the case of small sample size. Secondly锛� based on the theoretical sample size锛� the sampling model has little effect on the overall accuracy whether it is the accuracy assessment of point sample or cluster sample锛� but it has an impact on the accuracy of each class锛� especially the class with a small area weight. Finally锛� the stability of accuracy assessment of simple random sampling based on cluster sample is worse than the accuracy assessment based on point sample. The increase of the sample unit will increase the uncertainty of the accuracy assessment result on the basis of the theoretical sample size锛� with the increase of the sample unit锛� although the volatility of the accuracy assessment result becomes smaller锛� the result is still large compared to the point sample. Therefore锛� in order to reduce the uncertainty of the accuracy assessment results of land cover remote sensing products锛� the sample size can be increased for point sample锛� and the number of sample units can be increased or the size of sample units can be appropriately reduced for cluster sample.

Key words: Sampling model, Sample size, Sample unit, ESA CCI-LC, GlobeLand 30

涓浘鍒嗙被鍙�:

P237

鐜嬪啺娉�,鍐夋湁鍗�. 鍦熷湴瑕嗚閬ユ劅浜у搧鐪熷疄鎬ф楠屾柟娉曞姣擺J]. 閬ユ劅鎶�鏈笌搴旂敤, 2022, 37(1): 196-204.

Bingquan Wang,Youhua Ran. Comparison of Accuracy Assessment Methods of Remote Sensing based Land Cover Products[J]. Remote Sensing Technology and Application, 2022, 37(1): 196-204.

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鍦熷湴瑕嗚閬ユ劅浜у搧鐪熷疄鎬ф楠屾柟娉曞姣�

Comparison of Accuracy Assessment Methods of Remote Sensing based Land Cover Products

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