Abstract: This paper evaluates the data quality of road axes using the OpenStreetMap (OSM) collaborative mapping platform. OSM was chosen owing to the abundance of data and registered contributors (~ 6 million). We assumed the OSM collaborative data could complement the reference mappings by its quality parameters. We used the cartographic quality indicators of positional accuracy, thematic accuracy, and completeness to validate vector files from OSM. We analyzed the positional accuracy of linear features and we developed the automation of the positional accuracy process. The tool verified the completeness of road axes and thematic accuracy. The positional accuracy of linear features was also used, performed to obtain a range of scales, which reflected the characteristics of mapped areas and varied from 1:22,500 to 1:25,000. The completeness of road axes was 82% of the checked areas. By evaluating the thematic accuracy, we found that the absence of road axes toponymy in editions caused errors in the OSM features (i.e., 58% of road axes without information). As such, we concluded that collaborative data complements the reference cartography by measuring the heterogeneity of information in various regions and filtering the OSM data, despite its being useful for certain analyses.

Resumo Este trabalho apresenta uma pesquisa sobre elaboração de símbolos táteis para mapa indoor fabricado com impressora 3D a partir do método de prototipagem rápida. A área de estudo confere ao piso térreo do Pavilhão de Aulas Glauber Rocha da Universidade Federal da Bahia localizada na cidade de Salvador-Brasil. A partir do método Think Aloud avaliou-se um mapa tátil com a participação de oito pessoas cegas e verificou-se que o mapa foi útil para comunicar informações espaciais da área de estudo e que a cartografia tátil pode avançar no desenvolvimento de símbolos em mapas para auxiliar na mobilidade indoor, ou seja, na escolha de rotas para deslocamento dentro das edificações.

Abstract This paper presents part of the results of a master's research on elaboration of tactile symbols for indoor map made with 3D printer from the rapid prototyping method. The study area confers to the ground floor of the Glauber Rocha Classroom Hall of the Federal University of Bahia located in the city of Salvador-Brazil. From the method “Think Aloud” the tactile map was evaluate with the participation of eight blind people, it was verified that the map was efficient to communicate spatial information of the study area and that the tactile cartography can evaluate in the development of symbols in maps to aid in indoor mobility, that is, in the choice of routes for movement within the buildings.

Resumen Este artículo presenta una investigación sobre la elaboración de símbolos táctiles para mapas indoor fabricados con una impresora 3D utilizando el método de creación rápida de prototipos. El área de estudio es la planta baja del Pabellón de Aulas Glauber Rocha de la Universidad Federal de Bahía, ubicada en la ciudad de Salvador-Brasil. A partir del método Think Aloud, se evaluó un mapa táctil con la participación de ocho personas ciegas y se verificó que el mapa era útil para comunicar información espacial del área de estudio y que la cartografía táctil puede avanzar en el desarrollo de símbolos en mapas para ayudar en la movilidad interior, es decir, la elección de rutas para moverse dentro de los edificios.