Componentized 3D Junction Models for Navigation Fidelity
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Solution Overview
Problem
Current navigation systems face challenges in accurately representing road junctions with a limited number of generic 2D or 3D models, leading to inadequate fidelity in junction topology, geometry, and lane connectivity, while requiring excessive storage for unique models.
Innovation Solution
The development of componentized 3D junction models that consist of interconnectable segments varying by shape and lane counts, allowing for the creation of a wide variety of road junction configurations with reasonable data efficiency, using a set of predefined segment types such as straight, curve, and fork segments, and assembling these to form complete junction models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If unique 2D or 3D models are used for each road junction, then junction representation fidelity is improved, but storage requirements increase excessively
Solution Approach 1:
The patent divides complex road junction models into reusable component segments (e.g., approach segments, intersection segments, departure segments). Each segment represents a standardized portion of a junction that can be independently stored and recombined. This segmentation allows the system to represent diverse junction configurations using a limited library of component segments, dramatically reducing storage requirements while maintaining high representation fidelity through appropriate combination of segments.
Solution Approach 2:
The patent creates universal junction segment templates that can serve multiple functions across different junction types. A single segment definition can be reused in various contexts by adjusting parameters such as orientation, connection types, and geometric transformations. This universality allows the same segment to represent different physical features in different junction configurations, reducing the total number of unique models needed while maintaining accurate representation of diverse junction topologies.
2Quantity of substance
If a limited number of generic junction models are used, then storage efficiency is improved, but junction topology and geometry fidelity deteriorate
Solution Approach 1:
By segmenting junction models into standardized components with configurable parameters, the system achieves both storage efficiency and topology fidelity. The segmented approach allows precise representation of complex topologies through parameter configuration rather than requiring unique models for each junction type, maintaining accuracy while reducing storage requirements.
Solution Approach 2:
The patent employs parameterized segment definitions where geometric and topological properties are controlled by adjustable parameters. By changing parameters such as segment orientation, connection types, and dimensional properties, the same segment template can accurately represent multiple different junction configurations, achieving high topology fidelity with limited stored models.
3Measurement precision
If componentized 3D junction models are used, then a wide variety of junction configurations can be displayed with high fidelity, but model assembly complexity increases
Solution Approach 1:
The segmentation of junctions into standardized components simplifies assembly by providing a systematic framework. Rather than assembling arbitrary 3D models, the system uses predefined segments with standardized interfaces and connection rules, making the assembly process more structured and manageable despite the variety of configurations achievable.
Solution Approach 2:
Universal segment templates with configurable parameters reduce assembly complexity by eliminating the need to create and manage unique models for each junction type. The same segment definitions can be reused across different configurations through parameter adjustment, simplifying the assembly process while maintaining the ability to represent diverse junction topologies accurately.
Data Source
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AI summary
In one embodiment, a method is provided for componentized junction models. A plurality of road junction configurations are defined with a different set of road segment models corresponding to each of the plurality of road junction configurations. One of the plurality of road junction configurations are selected for a route through a physical road junction. A model of the physical road junction is generated by assembling the set of road segment models corresponding to the selected road junction configuration. The three-dimensional model of the physical road junction is rendered.