Objective
- Given a safety center (shown as a orange triangle or a red alert sign in the figure), find all areas that an ambulance leaving this safety center can reach, within a limited time in an emergency response scenario.
- Also, we want to provide new perspective to assess the placement of public services like hospitals and fire departments in urban planning.
Challenges
- Choosing proper visualization model covering most reachable areas without introducing unreachable areas
- Proposing fast query data structures for online query and display
Solutions & Results
- Proposed a novel visualization model which is purely data-driven, by creating a spatial buffer around each trajectory (shown as the orange area in the figure)
- Optimized query time through data preprocessing and creating indexes; demonstrated results in a user-friendly Node.js application
Submission
- Accepted by MDM 19 as a short paper [link].