A Scale-Aware Layout for Adaptive Cartographic Generalization

• Project/Area Number: 17K12691
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: High performance computing
• Research Institution: Keio University
• Principal Investigator: ウー シャンユン 慶應義塾大学, 理工学部(矢上), 特任助教 (00706749)
• Project Period (FY): 2017-04-01 – 2018-03-31
• Project Status: Discontinued (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: schematization / annotation / visualization / map

Outline of Annual Research Achievements

Consistently switching several visual contexts between geospatial information is an essential factor for map interaction. However, such information is hard to visually understand due to the complex transportation networks embedded in the present large datasets. Techniques have been developed for visualizing such networks, while a scale-aware integration of map interactions is still missing and challenging. This study aims to generate scale-aware dynamic maps by focusing (1) on algorithmic map schematization, (2) on annotated map illustrations, and (3) on map generalization between (1) and (2) across multiple levels of detail, while formulating them to be computationally efficient. In 2017, we concentrated on the spatial transition path optimization among multiple map scales to achieve the third aforementioned objectives. A Dependency Graph across Multiple Scales is automatically updated through user intervention, while the inherited visual relationship will be optimized using Label Active Ranges Maximization. The research was conducted step by step, where the rest of the techniques will be developed in the future.

Research Products

• [Journal Article] Scale-Adaptive Placement of Hierarchical Map Labels (2017)
  • Author(s): Hsiang-Yun Wu, Shigeo Takahashi, Sheung-Hung Poon, and Masatoshi Arikawa.
  • Journal Title: Short Paper Proceedings of the 19th Eurographics Conference on Visualization (EuroVis2017) Volume: - Pages: 1-5
  • DOI: 10.2312/eurovisshort.20171124
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Introducing Leader Lines into Scale-Aware Consistent Labeling (2017)
  • Author(s): Hsiang-Yun Wu, Shigeo Takahashi, Sheung-Hung Poon, and Masatoshi Arikawa.
  • Journal Title: Proceedings of the Advances in Cartography and GIScience: Selections from the International Cartographic Conference 2017 (ICACI 2017) Volume: - Pages: 117-130
  • DOI: 10.1007/978-3-319-57336-6_9
  • ISBN: 9783319573359, 9783319573366
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Overlap-Free Labeling of Clustered Networks based on Voronoi Tessellation (2017)
  • Author(s): Hsiang-Yun Wu, Shigeo Takahashi, and Rie Ishida
  • Journal Title: Journal of Visual Languages and Computing Volume: -
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Remarks] Personal website
  • URL: http://yun-vis.net