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Object- Versus Pixel-Based Unsupervised Fire Burn Scar Mapping under Different Biogeographical Conditions in Europe

Author

Listed:
  • Marta Milczarek

    (Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN), 01-716 Warsaw, Poland)

  • Sebastian Aleksandrowicz

    (Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN), 01-716 Warsaw, Poland)

  • Afroditi Kita

    (Centre for Research and Technology Hellas, Information Technologies Institute, 57001 Thessaloniki, Greece)

  • Rizos-Theodoros Chadoulis

    (Centre for Research and Technology Hellas, Information Technologies Institute, 57001 Thessaloniki, Greece)

  • Ioannis Manakos

    (Centre for Research and Technology Hellas, Information Technologies Institute, 57001 Thessaloniki, Greece)

  • Edyta Woźniak

    (Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN), 01-716 Warsaw, Poland)

Abstract

Wildfire detection and mapping is crucial for managing natural resources and preventing further environmental damage. In this study, we compared two methods of mapping burn scars using Sentinel-2 satellite imagery, a pixel-based approach and an object-based approach, at test sites located in various climatic zones with diverse land cover synthesis. The study aimed to determine the advantages and limitations of each method in terms of accuracy and precision in detecting burn scars. The results showed that both methods could detect burn scars with high accuracy, but with some limitations. The F1 score was in the range of 0.64–0.89 for the object-based approach, and 0.58–0.90 for the pixel-based approach. The pixel-based method produced a more precise delineation of the burnt area, but it was only suitable for detecting burn scars in a limited area of interest. The object-based method, on the other hand, was able to detect burn scars over a larger area accurately but with some commission errors. The results of both methods were also compared to the Copernicus Emergency Management Service (CEMS) rapid mapping product.

Suggested Citation

  • Marta Milczarek & Sebastian Aleksandrowicz & Afroditi Kita & Rizos-Theodoros Chadoulis & Ioannis Manakos & Edyta Woźniak, 2023. "Object- Versus Pixel-Based Unsupervised Fire Burn Scar Mapping under Different Biogeographical Conditions in Europe," Land, MDPI, vol. 12(5), pages 1-18, May.
  • Handle: RePEc:gam:jlands:v:12:y:2023:i:5:p:1087-:d:1150199
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    References listed on IDEAS

    as
    1. Alcasena, Fermín J. & Salis, Michele & Nauslar, Nicholas J. & Aguinaga, A. Eduardo & Vega-García, Cristina, 2016. "Quantifying economic losses from wildfires in black pine afforestations of northern Spain," Forest Policy and Economics, Elsevier, vol. 73(C), pages 153-167.
    2. Michail Sismanis & Rizos-Theodoros Chadoulis & Ioannis Manakos & Anastasios Drosou, 2023. "An Unsupervised Burned Area Mapping Approach Using Sentinel-2 Images," Land, MDPI, vol. 12(2), pages 1-16, January.
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    Cited by:

    1. Stefanos Dosis & George P. Petropoulos & Kleomenis Kalogeropoulos, 2023. "A Geospatial Approach to Identify and Evaluate Ecological Restoration Sites in Post-Fire Landscapes," Land, MDPI, vol. 12(12), pages 1-23, December.

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