Techniques to visualize occluded graph elements for 2.5D map editing

• Main Authors: FUJITA, Kazuyuki, HAYASHI, Daigo, HARA, Kotaro, TAKASHIMA, Kazuki, KITAMURA, Yoshifumi
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2020
• Subjects: Geovisualization; Graph visualization; Graphics and Human Computer Interfaces; Software Engineering
• Online Access: https://ink.library.smu.edu.sg/sis_research/5651; https://ink.library.smu.edu.sg/context/sis_research/article/6654/viewcontent/Fujita_TechniquesToVisualizeOccludedGraphElementsFor2.5DMapEditing_CHI2020LBW.pdf
• Institution: Singapore Management University

We propose an interface with two novel techniques to visualize occluded graph nodes and edges that help the user edit map data with a 2.5D geographical structure (e.g., multi-floor indoor maps). We first design a visualization technique —Repel Signification— that employs micro-animation to signify the graph elements that are overlapping with each other (and potentially erroneous). We also design a technique that enables the user to edit the occluded components with Expansion Interaction, which simultaneously visualizes both in-floor and across-floor occluded connections between the map elements. The combination of the two methods would enable the map editors (non-experts) to effectively find and fix erroneous data in 2.5D maps without changing the operation manner from the existing 2D map-editing interface.