Evaluation of the quality of the Voluntary Geographic Information for the road network in Bogotá D.C

Luis A. Niño Beltran; Aquiles E. Darghan Contreras; Libia D. Cangrejo Aljure; Edwin F. Grisales Camargo

doi:10.18172/cig.5280

Autores/as

Luis A. Niño Beltran Universidad Nacional de Colombia https://orcid.org/0000-0001-9797-3164
Aquiles E. Darghan Contreras Universidad Nacional de Colombia https://orcid.org/0000-0001-5790-1684
Libia D. Cangrejo Aljure Universidad Nacional de Colombia https://orcid.org/0000-0001-8653-4393
Edwin F. Grisales Camargo Universidad Nacional de Colombia https://orcid.org/0000-0002-4999-7441

DOI:

https://doi.org/10.18172/cig.5280

Palabras clave:

OpenStreetMap, red de carreteras, expresiones regulares, precisión posicional, precisión temática

Resumen

El aumento en la producción de Información Geográfica Voluntaria (VGI) ha venido creciendo considerablemente y se han realizado diversos estudios al respecto. Sin embargo, el desconocimiento de la calidad de la información generada en forma voluntaria y participativa, plantea retos y cuestionamientos sobre el uso de este tipo de información. En la revisión efectuada para el caso colombiano no se identificaron estudios relacionados con el tema; en consecuencia, se presenta este estudio sobre la evaluación de la calidad VGI de la malla vial de Bogotá respecto a la completitud, a la exactitud posicional y a la exactitud temática. Esta evaluación se realizó por medio de un proceso semiautomático que usa un buffer móvil y el centroide de las vías para realizar las comparaciones correspondientes entre dos fuentes de datos. Los resultados encontrados revelan que el método empleado permitió comparar hasta el 85,0% de los datos, además se calculó que la malla OSM (OpenStreetMap) tiene una completitud del 85,4%, sobre toda el área de Bogotá. Una exactitud posicional de 3,98 m y una exactitud temática relacionada al porcentaje de error en los atributos: Jerarquía vial, Dirección de flujo y Nombramiento de las vías de 35,8%, 15,0% y 34,6% respectivamente. La calidad VGI evaluada a través de la completitud, la exactitud posicional y la exactitud temática es considerada conjuntamente como deficiente, Sin embargo, evaluada la calidad separadamente a través de las medias indicadas, se concluyó que los datos VGI gozan de una completitud aceptable, una exactitud posicional óptima y una exactitud temática deficiente.

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Biografía del autor/a

Edwin F. Grisales Camargo, Universidad Nacional de Colombia

Facultad de Ciencias Agrarias, Docente de Cátedra. Sistemas de Información Geográfica, Análisis y modelamiento espacial.

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