Integrating satellite and street-level images for local climate zone mapping

Rui Cao, Cai Liao, Qing Li, Wei Tu, Rui Zhu, Nianxue Luo, Guoping Qiu, Wenzhong Shi (Corresponding Author)

Research output: Journal article publicationReview articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Timely and accurate local climate zone (LCZ) classification maps are valuable for urban climate studies. The integration of remote sensing and street-level images is promising to produce high-quality LCZ maps, since the former can efficiently capture the information of landscapes on a large-scale while the latter include ground-level details. However, due to their significant differences in spatial distributions and capture views, as well as existing sampling issues of street-level images, how to fuse them effectively is challenging and remains an uncharted research area. To address these issues and fill the gap, this study proposes an effective method to integrate satellite and street-level images for LCZ mapping. Additionally, a simple yet effective street-level image sampling method is proposed. Extensive experiments have been performed and the results demonstrate the effectiveness of the proposed data fusion method and also confirm the usefulness of fusing street-level images with satellite images in enhancing the performance of LCZ mapping. Moreover, the proposed sampling method can increase data representativeness and avoid data redundancy, thus significantly reducing the number of required images while retaining high classification accuracy. To the best of our knowledge, this study is the first attempt to integrate cross-view satellite and street-level images for LCZ mapping. The study and proposed methods can contribute to the development of multi-source data fusion for LCZ map production and further benefit urban climatic research.
Original languageEnglish
Article number103323
JournalInternational Journal of Applied Earth Observation and Geoinformation
Volume119
Issue number1569-8232
DOIs
Publication statusPublished - 3 May 2023

Keywords

  • Climate change
  • Data fusion
  • GeoAI
  • Local climate zone (LCZ)
  • Remote sensing
  • Street view images

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Earth-Surface Processes
  • Management, Monitoring, Policy and Law
  • Global and Planetary Change

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