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author:

Hu, Y. (Hu, Y..) [1] | Wang, H. (Wang, H..) [2] | Niu, X. (Niu, X..) [3] | Shao, W. (Shao, W..) [4] | Yang, Y. (Yang, Y..) [5]

Indexed by:

Scopus

Abstract:

It is still difficult to obtain high-resolution and fast-updated NDVI data, and spatiotemporal fusion is an effective means to solve this problem. The purpose of this study is to carry out the comparative analysis and comprehensive trade-off of spatiotemporal fusion models for NDVI generation and to provide references for scholars in this field. In this study, four spatiotemporal fusion models (STARFM, ESTARFM, FSDAF, and GF-SG) were selected to carry out NDVI image fusion in grassland, forest, and farmland test areas, and three indicators of root mean square error (RMSE), average difference (AD), and edge feature richness difference (EFRD) were used. A detailed evaluation and analysis of the fusion results and comprehensive trade-off were carried out. The results show that: (1) all four models can predict fine-resolution NDVI images well, but the phenomenon of over-smoothing generally exists, which is more serious in high-heterogeneity areas; (2) GF-SG performed well in the evaluation of the three indicators, with the highest comprehensive trade-off score (CTS) of 0.9658. Followed by ESTARFM (0.9050), FSDAF (0.8901), and STARFM (0.8789); (3) considering the comparative analysis and comprehensive trade-off results of the three test areas and the three indicators, among the four models, GF-SG has the best accuracy in generating NDVI images. GF-SG is capable of constructing NDVI time series data with high spatial and temporal resolution. © 2022 by the authors.

Keyword:

accuracy assessment comparison image spatiotemporal fusion vegetation index

Community:

  • [ 1 ] [Hu, Y.]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
  • [ 2 ] [Hu, Y.]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
  • [ 3 ] [Wang, H.]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
  • [ 4 ] [Wang, H.]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
  • [ 5 ] [Niu, X.]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
  • [ 6 ] [Niu, X.]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
  • [ 7 ] [Niu, X.]School of Geosciences, Yangtze University, Wuhan, 430100, China
  • [ 8 ] [Shao, W.]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
  • [ 9 ] [Shao, W.]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
  • [ 10 ] [Shao, W.]Academy of Digital China (Fujian), Fuzhou University, Fuzhou, 350116, China
  • [ 11 ] [Yang, Y.]State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
  • [ 12 ] [Yang, Y.]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China

Reprint 's Address:

  • [Hu, Y.]State Key Laboratory of Resources and Environmental Information System, China

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Source :

Remote Sensing

ISSN: 2072-4292

Year: 2022

Issue: 23

Volume: 14

5 . 0

JCR@2022

4 . 2 0 0

JCR@2023

ESI HC Threshold:51

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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