Isochrone Mapping System Using Graph Data for Travel Time
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Solution Overview
Problem
Conventional mapping systems fail to accurately calculate travel times considering speed limits, traffic impediments, road directionality, pedestrian paths, bicycle paths, and public transit paths, making it difficult for users to determine reachable points of interest within a given time frame, and they struggle with real-time processing capabilities.
Innovation Solution
A method that receives user inputs for a point of interest and a threshold time, accesses graph data representing road intersections and segments, identifies the closest node, and generates a geometric shape depicting the reachable area within the specified time, presenting it on a map, incorporating data on traffic impediments and transportation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mapping systems calculate travel times using basic distance metrics, then the calculation is simple and fast, but the accuracy of reachable area depiction is poor
Solution Approach 1:
The system segments the geographic region into a graph data structure with nodes representing road intersections and edges representing road segments. This segmentation allows precise travel time calculation by breaking down the continuous geographic space into discrete, manageable units that can be processed algorithmically while maintaining accuracy.
Solution Approach 2:
The patent introduces graph data as an intermediary layer between the raw geographic coordinates and the travel time calculation. This intermediary structure incorporates speed limits, traffic impediments, and road directionality, enabling accurate travel time computation without requiring the system to directly process complex real-world conditions.
2Measurement precision
If mapping systems incorporate comprehensive data on speed limits, traffic impediments, and transportation modes, then travel time calculation accuracy improves, but processing time increases
Solution Approach 1:
The system performs preliminary actions by pre-processing geographic data into graph structures and pre-calculating travel times between nodes. This allows the system to have travel time data ready in advance, reducing processing time when generating isochrones while maintaining accuracy based on comprehensive traffic and speed data.
Solution Approach 2:
The patent implements dynamic processing by adjusting the level of detail in graph data processing based on the specific query requirements. The system can dynamically select which transportation modes and data layers to process, optimizing processing time while maintaining necessary accuracy for each specific isochrone generation task.
3Measurement precision
If mapping systems perform real-time travel time calculations with comprehensive data, then accuracy improves, but processing capabilities are overwhelmed
Solution Approach 1:
The system segments the complex real-time calculation task into smaller sub-tasks: graph data access, node identification, edge traversal, and isochrone generation. This segmentation enables parallel processing and distributed computation, allowing the system to handle comprehensive travel time data in real-time without overwhelming processing capabilities.
Solution Approach 2:
The patent extracts only the necessary graph data and nodes relevant to the specific query point and time threshold, rather than processing the entire geographic database. This extraction approach maintains high accuracy by focusing on relevant data while preserving real-time processing capability by minimizing the data volume that must be processed.
4Adaptability or versatility
If mapping systems generate detailed isochrones considering multiple transportation modes, then the usefulness for real estate evaluation improves, but device complexity increases
Solution Approach 1:
The system implements multi-functionality by designing the graph data structure and isochrone generation algorithm to handle multiple transportation modes (driving, walking, biking, public transit) through a unified framework. This universal approach enhances real estate evaluation capability by providing versatile travel time analysis while avoiding the need for separate complex systems for each transportation mode.
Data Source
AI summary
Various embodiments of the present invention provide an apparatus, method, and computer program product for mapping points of interest relative to a geometric shape defined on a map. More specifically, an apparatus, method, and computer program product is provided wherein a user may view on a map a geometric shape that depicts an area within a geographic region that is expected to be reachable from a point of interest within a threshold period of time.