AR Navigation Route Projection for Lane Guidance
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Solution Overview
Problem
Conventional navigation systems often provide unclear instructions, especially at complex intersections, leading to driver distraction and potential accidents, as they fail to accurately determine lane position and provide straightforward turn instructions.
Innovation Solution
A method generating a virtual navigation route using front video data, navigation points, and lane identification to create a rectangular navigation characteristic image with dotted grids, calculating the probability of route passage through each grid, and projecting the route using augmented reality to align with the vehicle's frontal view, ensuring accurate and intuitive lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional navigators use virtual map and voice cues to navigate drivers, then navigation instructions are provided, but the instructions are not straightforward enough for complicated intersections causing driver distraction and accidents
Solution Approach 1:
The patent transitions from conventional 2D virtual map display to a 3D spatial representation by projecting the navigation route directly onto the driver's field of view through the windshield. This dimensional change allows the route information to be displayed in the driver's actual viewing direction, making complicated intersection navigation intuitive and eliminating the need for driver distraction to interpret 2D map representations.
Solution Approach 2:
The patent introduces an augmented reality display system as an intermediary between the navigation computer and the driver. This intermediary projects the navigation route information directly onto the windshield or transparent display surface, serving as a mediator that delivers clear directional guidance without requiring the driver to shift attention to separate maps or screens.
2Measurement precision
If conventional navigators instruct drivers to make turns without precise lane detection, then turn instructions are provided, but drivers must hastily switch lanes right before intersection causing traffic accidents
Solution Approach 1:
The patent implements preliminary action by detecting the vehicle's current lane position and calculating the optimal lane change timing in advance, before the driver needs to make the maneuver. The system identifies the best lane change points along the navigation route and provides advance guidance, allowing drivers to change lanes smoothly and safely rather than hastily at the last moment.
Solution Approach 2:
The patent employs feedback mechanisms by continuously monitoring the vehicle's position relative to detected lanes and providing real-time guidance on whether to maintain current lane or prepare for lane changes. This feedback loop allows the system to adjust lane change recommendations based on actual vehicle position, ensuring safe and timely lane transitions.
3Loss of information
If navigation route is simply displayed on screen, then route information is provided, but route overlaps with image of car causing driver misunderstanding and distraction
Solution Approach 1:
The patent resolves the overlap problem by moving the route display from a 2D screen to a 3D spatial projection through the windshield. The navigation route is rendered in the driver's actual viewing direction, overlaying the real-world view rather than competing for space on a separate screen. This dimensional transition eliminates overlap conflicts and integrates route information naturally into the driver's field of view.
Solution Approach 2:
The patent uses copying by projecting a virtual representation of the navigation route onto the physical windshield surface. This virtual copy of the route information is superimposed on the driver's actual view of the road, allowing the route to be displayed without blocking the view or overlapping with vehicle images in a way that causes confusion.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances navigation clarity by projecting the navigation route in real-time over the vehicle's actual view, reducing driver distraction and the risk of accidents by providing accurate lane guidance and turn instructions.
Implementation Method 1
the navigation route is projected over the front video data using an augmented reality (AR) method, converting back a frontal view data for the vehicle
Data Source
AI summary
The present invention provides a method for generating a virtual navigation route, by obtaining multiple navigation points each with a flag data; identifying at least two lanes from a front video data; creating a navigation characteristic image according to the flag data, the navigation points, the front video data, and the at least two lanes, wherein the navigation characteristic image has multiple dotted grids; calculating a probability of a navigation route passing through each dotted grid, and setting the dotted grid with the highest probability calculated in each row of the navigation characteristic image as a first default value; and fitting curves for the grids with the first default value as the navigation route; the navigation route is generated in real time and projected over the front video data using an augmented reality (AR) method, achieving AR effects and navigating with better representation of the traffic.