Spatio-temporal sub-pixel land cover mapping of remote sensing imagery using spatial distribution information from same-class pixels

Li, Xiaodong; Chen, Rui; Foody, Giles M.; Wang, Lihui; Yang, Xiaohong; Du, Yun; Ling, Feng

Abstract

© 2020 by the authors. The generation of land cover maps with both fine spatial and temporal resolution would aid the monitoring of change on the Earth's surface. Spatio-temporal sub-pixel land cover mapping (STSPM) uses a few fine spatial resolution (FR) maps and a time series of coarse spatial resolution (CR) remote sensing images as input to generate FR land cover maps with a temporal frequency of the CR data set. Traditional STSPM selects spatially adjacent FR pixels within a local window as neighborhoods to model the land cover spatial dependence, which can be a source of error and uncertainty in the maps generated by the analysis. This paper proposes a new STSPM using FR remote sensing images that pre-and/or post-date the CR image as ancillary data to enhance the quality of the FR map outputs. Spectrally similar pixels within the locality of a target FR pixel in the ancillary data are likely to represent the same land cover class and hence such same-class pixels can provide spatial information to aid the analysis. Experimental results showed that the proposed STSPM predicted land cover maps more accurately than two comparative state-of-the-art STSPM algorithms.

Citation

Li, X., Chen, R., Foody, G. M., Wang, L., Yang, X., Du, Y., & Ling, F. (2020). Spatio-temporal sub-pixel land cover mapping of remote sensing imagery using spatial distribution information from same-class pixels. Remote Sensing, 12(3), Article 503. https://doi.org/10.3390/rs12030503

• Journal Article Type: Article
• Acceptance Date: Feb 1, 2020
• Online Publication Date: Feb 4, 2020
• Publication Date: Feb 1, 2020
• Deposit Date: Mar 4, 2020
• Publicly Available Date: Mar 4, 2020
• Journal: Remote Sensing
• Electronic ISSN: 2072-4292
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 3
• Article Number: 503
• DOI: https://doi.org/10.3390/rs12030503
• Keywords: General Earth and Planetary Sciences
• Public URL: https://nottingham-repository.worktribe.com/output/4089998
• Publisher URL: https://www.mdpi.com/2072-4292/12/3/503