AR Lane Identification Overlay for Junction Visibility
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Solution Overview
Problem
Current vehicle displays do not effectively provide lane information to users, especially in poor visibility conditions or when approaching multiple-lane intersections, which can affect user trust and safety, particularly in automated driving modes.
Innovation Solution
A system and method using a dual-focal plane augmented reality display that overlays conformal graphics on the roadway to show lane identification and rules, activated on demand, utilizing roadway markers, vehicle sensors, and eye-tracking to adjust the projection of virtual images in real-time, ensuring lane information is displayed when approaching intersections or in low visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vehicle displays are used to show lane information, then the display system is simple, but the lane information is not effectively provided to users especially in poor visibility conditions
Solution Approach 1:
The patent uses an augmented reality display as an intermediary between the traditional display system and the user's visual field. The AR display overlays lane information directly onto the driver's view of the road, acting as a mediator that combines real-world visibility with informational display without requiring the driver to shift attention between separate display components and the road.
Solution Approach 2:
The patent transitions from two-dimensional flat displays to three-dimensional spatial overlay displays. By projecting lane information directly into the driver's field of view at varying depths and positions corresponding to actual lane locations, the system adds a spatial dimension to information presentation, enabling effective communication of lane data especially in poor visibility conditions.
2Loss of information
If augmented reality display with conformal graphics overlay is used, then lane information is effectively provided in real-time, but the device complexity increases
Solution Approach 1:
The system pre-processes roadway data and lane information before the driver needs it. By calculating lane positions, identifying lane markers, and preparing conformal graphics overlays in advance based on GPS location and map data, the system ensures that lane information is ready for immediate display when the vehicle approaches intersections or enters poor visibility conditions, reducing information loss.
Solution Approach 2:
The patent applies conformal graphics with varying local properties to different regions of the display. Each lane receives customized graphical overlays with specific visual characteristics (color, brightness, position) tailored to that lane's location and the driver's current position relative to it, optimizing information visibility for each specific area rather than using uniform display properties.
3Use of energy by moving object
If the system activates on demand in poor driving conditions and when approaching intersections, then energy consumption is reduced, but the response time to provide lane information may be delayed
Solution Approach 1:
The system continuously monitors driving conditions, vehicle location, and environmental factors in the background even when not actively displaying. By pre-detecting when the vehicle is approaching intersections or entering poor visibility conditions based on GPS data and sensor inputs, the system can prepare and activate lane information display without delay, balancing energy conservation with rapid response capability.
Solution Approach 2:
The patent implements continuous feedback loops where sensors monitor driving conditions, vehicle position, and visibility levels in real-time. This feedback mechanism triggers on-demand activation of the AR display when specific conditions are detected (poor visibility, approaching intersections), ensuring the system activates at the optimal moment while maintaining low energy consumption during normal driving conditions.
4Loss of information
If eye-tracking and head position data are used to adjust virtual image location, then user awareness is improved, but the system complexity increases
Solution Approach 1:
The patent implements dynamic adjustment of virtual image positioning based on real-time tracking of eye and head position. Rather than static display placement, the conformal graphics and lane information overlays automatically reposition themselves according to the driver's current gaze direction and head orientation, ensuring lane information remains visible and relevant to the driver's attention focus, thereby improving awareness without requiring complex manual adjustment mechanisms.
Data Source
AI summary
A method for displaying lane information on an augmented reality display includes receiving roadway data. The roadway data includes information about a roadway along a route of a vehicle. The roadway includes a plurality of lanes. The roadway data includes lane information about at least one of the plurality of lanes along the route of the vehicle. The method further includes receiving vehicle-location data. The vehicle-location data indicates a location of the vehicle. The method further includes determining that that the vehicle is approaching a road junction using the vehicle-location data and the roadway data. The method further includes, in response to determining that the vehicle is approaching the road junction, transmitting a command signal to a dual-focal plane augmented reality display to display at least one virtual image that is indicative of the lane information.