  A system for semi-automatic vectorization of linear networks (roads, rivers,
etc.) on rasterized cartographic maps is presented. In this system, human
intervention is limited to a graphic, interactive selection of the color
attributes of the information to be obtained. Using this data, the system
performs a preliminary extraction of the linear network, which is subsequently
completed, refined and vectorized by means of an automatic procedure. Results
on maps of different sources and scales are included.
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  Se presenta un sistema semi-automatico de vectorizacion de redes de objetos
lineales (carreteras, rios, etc.) en mapas cartograficos digitalizados. En este
sistema, la intervencion humana queda reducida a la seleccion grafica
interactiva de los atributos de color de la informacion a obtener. Con estos
datos, el sistema realiza una extraccion preliminar de la red lineal, que se
completa, refina y vectoriza mediante un procedimiento automatico. Se presentan
resultados de la aplicacion del sistema sobre imagenes digitalizadas de mapas
de distinta procedencia y escala.
