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Leal Villamil, Julián and Perea Ardila, Mauricio Alejandro and Santa Ramírez, Gabriel Alexis. (2022). Comparative analysis of assertiveness for three built-up zone indexes applied to Colombian cities. Revista Ingeniería, Investigación y Desarrollo (I2+D), 22 (2). pp. 16-26. doi https://doi.org/10.19053/1900771X.v22.n2.2022.15018

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Abstract

The delimitation and Spatio-temporal characterization of built-up or urbanized areas in cities is a fundamental input for territorial planning. Built-up Zone Indices are used to identify urban areas using remote sensing. The objective of this study 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 Sensing techniques and the Built-up Zone Indices were determined by taking into account the parameters established by their creators. 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 null Kappa 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 indices in the Colombian context, as well as the adjustments to the optimal value range for each particular city according to its architectural characteristics.

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Item Type:	Article
Uncontrolled Keywords:	Índice kappa. Landsat 8. Planificación urbana. Teledetección. Zona urbana
Geographical coverage :	Colombia. Cundinamarca. Tolima. Bogotá. Ibagué. Espinal
Depositing User:	Dirección General Marítima
ISSN:	2422-4324
Official URL:	https://revistas.uptc.edu.co/index.php/ingenieria_...
Identification Number:	https://doi.org/10.19053/1900771X.v22.n2.2022.15018

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