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A Zone-Based Approach for Placing Annotation Labels on Metro Maps

  • Hsiang-Yun Wu
  • Shigeo Takahashi
  • Chun-Cheng Lin
  • Hsu-Chun Yen
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6815)

Abstract

Hand-drawn metro map illustrations often employ both internal and external labels in a way that they can assign enough information such as textual and image annotations to each landmark. Nonetheless, automatically tailoring the aesthetic layout of both textual and image labels together is still a challenging task, due to the complicated shape of the labeling space available around the metro network. In this paper, we present a zone-based approach for placing such annotation labels so that we can fully enhance the aesthetic criteria of the label arrangement. Our algorithm begins by decomposing the map domain into three different zones where we can limit the position of each label according to its type. The optimal positions of labels of each type are evaluated by referring to the zone segmentation over the map. Finally, a new genetic-based approach is introduced to compute the optimal layout of such annotation labels, where the order in which the labels are embedded into the map is improved through the evolutional computation algorithm. We also equipped a semantic zoom functionality, so that we can freely change the position and scale of the metro map.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Hsiang-Yun Wu
    • 1
  • Shigeo Takahashi
    • 1
  • Chun-Cheng Lin
    • 2
  • Hsu-Chun Yen
    • 3
  1. 1.Dept. of Complexity Science and EngineeringThe University of TokyoKashiwaJapan
  2. 2.Dept. of Industrial Engineering and ManagementNational Chiao Tung UniversityHsinchuTaiwan
  3. 3.Dept. of Electrical EngineeringNational Taiwan UniversityTaipeiTaiwan

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