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Comparative Analysis of Manual Slum Identification Using Satellite Data: A Case Study of Medellin, Colombia

Year: 2025

Type: conference-paper

Abstract: This paper investigates the identification of slums in Medellín, Colombia, conducted by two independent research teams. By comparing two similar methodologies, based on Earth observation (EO) data and utilizing manual visual image interpretation (MVII), this study highlights overlaps and differences in the identified areas. The findings reveal significant congruence in core informal area zones but notable divergences in peripheral and less densely developed regions. These results underscore the necessity for transparent conceptual definitions of the target class ’slum’, for transformation of conceptual approaches in mapping approaches, for the explanation of effects of ambiguities in both, and thus for the development of improved mapping protocols.

Source: Joint Urban Remote Sensing Event (JURSE)

DOI: 10.1109/jurse60372.2025.11075970

Authors: John Friesen, Nicolas Kraff, Monika Kuffer, Stefanos Georganos, Henri Debray, Hannes Taubenböck, Jota Samper

Institutions: University of Würzburg, Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), International Institute for Geo-Information Science and Earth Observation, University of Twente, Karlstad University, University of Colorado Boulder

Language: English

Topic: Urban and Rural Development Challenges

Subfield: Urban Studies

Field: Social Sciences

Domain: Social Sciences

SDG: Sustainable cities and communities

Open Access status: green

OpenAlex ID: W4413087387

FWCI:

Cites: 15

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Related to: 10