3D Building Model Indoor Navigation via Environmental Data Matching
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Solution Overview
Problem
Conventional navigation applications rely on GPS and require strong wireless signals, making them ineffective for indoor navigation and unable to capture the inner structure of buildings.
Innovation Solution
A system and method that updates a 3D model of a building by obtaining and comparing environmental data from user devices with reference data, allowing for indoor positioning and navigation by identifying and updating reference locations based on environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GPS and wireless signal-based navigation is used, then positioning can be provided in outdoor environments with strong signals, but navigation cannot be performed indoors or in locations with poor wireless signals
Solution Approach 1:
The navigation system is segmented into outdoor mode (using GPS and wireless signals) and indoor mode (using 3D model matching and visual landmarks). The system automatically switches between segmentation modes based on signal availability, allowing navigation to continue uninterrupted from outdoor to indoor environments.
Solution Approach 2:
A 3D building model serves as an intermediary layer between the user device and the physical environment. The model contains pre-stored visual landmarks and environmental features that act as mediators for positioning when direct GPS or wireless signal-based positioning is unavailable indoors.
2Measurement precision
If a 3D model is continuously updated with data from multiple user devices, then positioning accuracy improves, but system complexity and data processing requirements increase
Solution Approach 1:
Data from multiple user devices is merged and aggregated to build and update the 3D building model collectively. Individual device observations are combined to create a more accurate and comprehensive model, improving positioning accuracy for all users while distributing the data collection burden across the user base.
Solution Approach 2:
The system creates and maintains a digital copy (3D model) of the physical building environment. This virtual model is updated with data from user devices and serves as a reference for positioning, allowing accurate navigation without requiring complex real-time processing of all raw sensor data from each device.
Data Source
AI summary
Systems and methods for updating a model of a building are provided. The method includes obtaining a three-dimensional (3D) model of a building including reference environmental data associated with a plurality of reference locations of the building and obtaining current environmental data corresponding to a current location of the building. The method further includes identifying, from the 3D model, a target reference location corresponding to the current location from the plurality of reference locations of the building and comparing the current environmental data with the target reference environmental data. The method further includes sending to the user device the target reference location when the current environmental data match the target reference environmental data, and updating the 3D model with the current environmental data when the current environmental data statistically un-match the target reference environmental data.