Comparative analysis of assertiveness for three built-up zone indexes applied to Colombian cities

The delimitation and Spatio-temporal characterization of built-up or urbanized areas in cities is a fundamental input forterritorial planning. Built-up Zone Indices are used to identify urban areas using remote sensing. The objective of thisstudy was to evaluate the multitemporal assertiveness (1997...

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Autores:
Tipo de recurso:
http://purl.org/coar/resource_type/c_6699
Fecha de publicación:
2022
Institución:
Universidad Pedagógica y Tecnológica de Colombia
Repositorio:
RiUPTC: Repositorio Institucional UPTC
Idioma:
spa
OAI Identifier:
oai:repositorio.uptc.edu.co:001/12361
Acceso en línea:
https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/15018
https://repositorio.uptc.edu.co/handle/001/12361
Palabra clave:
Kappa Index
Landsat 8
Urban planning
Remote sensing
Urban area
Índice Kappa
Landsat 8
Planificación urbana
Teledetección
Zona urbana
Rights
License
http://purl.org/coar/access_right/c_abf200
Description
Summary:The delimitation and Spatio-temporal characterization of built-up or urbanized areas in cities is a fundamental input forterritorial planning. Built-up Zone Indices are used to identify urban areas using remote sensing. The objective of thisstudy was to evaluate the multitemporal assertiveness (1997, 2002, 2007 and 2018) of three Built-up Zone Indices (NDBI,UI and IBI) calculated in Landsat images for three Colombian cities. The images were enhanced through Remote Sensingtechniques and the Built-up Zone Indices were determined by taking into account the parameters established by theircreators. It means that 700 ground truth points (350 for the built-up zone and 350 for the non-built-up zone) were used to establish the multitemporal assertiveness using the Kappa Index. The results show that the index with the best overall multitemporal assertiveness was the NDBI (Kappa = 0.382), which was also the best performing for the largest city (Kappa = 0.566); for the intermediate size city, the most successful index was the UI (Kappa = 0.545). The evaluated indexes had nullKappa values in the city of Espinal; discarding the results obtained in the latter city, the global assertiveness of the indexes can be increased to 0.573. Further research is needed to evaluate in detail the applicability and assertiveness of the indicesin the Colombian context, as well as the adjustments to the optimal value range for each particular city according to its architectural characteristics.