Dynamic 3D to 2D Landmark Rendering in Navigation Maps
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Solution Overview
Problem
Existing navigation systems face challenges in efficiently managing and displaying landmarks due to high computational resource demands, particularly at intersections and complex road topologies, which can lead to delayed route calculations and inaccurate driver guidance.
Innovation Solution
A method that dynamically determines whether to display a landmark as a three-dimensional or two-dimensional graphical object based on its distance and visibility from the vehicle's location, using a navigation database with both types of representations, to optimize resource usage and reduce computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional graphical objects are used to represent landmarks in digital maps, then the visual representation and spatial orientation accuracy are improved, but the computational resource consumption and processing time increase significantly
Solution Approach 1:
The patent applies local quality by differentiating the representation quality of landmarks based on their spatial relationship to the vehicle. Landmarks within a threshold distance are rendered as three-dimensional graphical objects to provide accurate spatial orientation, while landmarks beyond the threshold are represented as two-dimensional icons to reduce computational load. This selective quality adjustment resolves the contradiction between representation accuracy and computational resource consumption.
Solution Approach 2:
The patent implements dynamics by making the landmark representation adaptive to the vehicle's position. The system dynamically switches between three-dimensional and two-dimensional representations based on the changing distance between the vehicle and landmarks. This dynamic adjustment allows the system to maintain high representation quality for relevant landmarks while minimizing computational resources for distant ones.
2Loss of information
If detailed digital maps with multiple landmarks are displayed, then the navigation information completeness is improved, but the route calculation time and display processing time increase
Solution Approach 1:
The patent applies local quality by rendering landmarks with different levels of detail based on their relevance to the current route. Landmarks within the threshold distance are displayed with three-dimensional detail to maintain navigation information completeness, while distant landmarks are displayed as simplified icons to reduce processing time and prevent route calculation delays.
3Measurement precision
If three-dimensional representations of landmarks are used at all times, then the driver's spatial orientation is improved, but the navigation system's response time and processing speed decrease
Solution Approach 1:
The patent applies local quality by providing three-dimensional spatial orientation only for landmarks that are locally relevant (within threshold distance), while using simpler two-dimensional representations for distant landmarks. This selective approach maintains adequate spatial orientation for critical navigation decisions while preserving system processing speed.
Solution Approach 2:
The patent applies partial action by providing three-dimensional representations only when necessary (for nearby landmarks) rather than excessively rendering all landmarks in three-dimensional detail. This partial application of computational resources maintains processing speed while providing sufficient spatial orientation information for effective navigation.
Data Source
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AI summary
The present invention relates to a method for graphically representing a physical object in a digital map used by a navigation system comprising: displaying at least a part of the digital map and either displaying a three-dimensional graphical object representing the physical object or a two-dimensional graphical object representing the physical object depending on a location of the physical object.