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Automatic Street Graph Construction in Sketch Maps
Automatic Street Graph Construction in Sketch Maps  
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In this paper we present an algorithm for automatic street graph construction of hand-drawn sketch maps. This detection is important for a subsequent graph matching in order to align the sketch map with another map. Our algorithm detects a number of street candidates and selects street lines by rating the candidates and their neighbors in the street candidate graph. To evaluate this approach, we manually generated a ground truth for some maps and conducted a preliminary quantitative performance study.
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