AR Map Display Calibration for Precise Navigation Overlays
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Solution Overview
Problem
Existing map display technologies lack diversity in display manner and suffer from insufficient precision in navigation prompt information, often leading to incorrect navigation due to inadequate device calibration.
Innovation Solution
Implementing augmented reality (AR) technology to overlay virtual navigation prompts in real scenes, with periodic verification detection of device calibration parameters to ensure accurate projection, using a method that includes intrinsic and extrinsic parameter calibration and a hierarchical search for optimal calibration parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If planar road network information is displayed in conventional manner, then display simplicity is maintained, but display diversity and user engagement are insufficient
Solution Approach 1:
The patent merges real-world scene capture with virtual navigation prompt overlay by integrating camera imaging, GPS location data, and AR rendering into a unified display system. This combines multiple data sources and processing functions to create diverse augmented reality map displays while managing system complexity through integrated architecture.
Solution Approach 2:
The patent transitions from conventional two-dimensional planar map displays to three-dimensional augmented reality overlays that superimpose virtual navigation prompts onto real-world camera views. This dimensional enhancement provides diverse display modes including perspective-based AR navigation, improving adaptability while managing complexity through coordinate transformation algorithms.
2Measurement precision
If device calibration parameter verification is performed periodically, then navigation precision is improved, but processing time and computational load increase
Solution Approach 1:
The patent implements periodic verification detection of device calibration parameters at predetermined intervals during navigation. This periodic calibration approach maintains navigation prompt location precision by regularly checking and updating device orientation and position data, while managing processing time by performing verification only at scheduled intervals rather than continuously.
Solution Approach 2:
The system performs self-verification of calibration parameters by automatically detecting device orientation, position, and overlay alignment without requiring manual calibration input. This self-service calibration verification maintains precision while minimizing user time investment and computational overhead through automated algorithms.
Data Source
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AI summary
Disclosed in the present invention are a map display method, an apparatus, a storage medium, and a terminal, said method comprising: acquiring a real scene image of a current location and target navigation data regarding a navigation from the current location to a destination; determining, according to the current location and the target navigation data, virtual navigation prompt information which is to be superimposed and displayed in the real scene image; determining, according to the device calibration parameter of a target device that captures the real scene image, a first position where the virtual navigation prompt information is superimposed and displayed in the real scene image; performing check detection of the current device calibration parameter; and when the current device calibration parameter passes the check detection, superimposing and displaying, in the first position, the virtual navigation prompt information, so as to obtain an augmented reality image for map displaying. The present invention applies the AR technology to the navigation field, realizing a virtual and real scene combined navigation method, making the map display methods be more diversified.