AR Lane Guidance Overlay with HD Map Lane Boundary Alignment
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Solution Overview
Problem
Conventional navigation systems using augmented reality cannot provide precise information about the driving lane, including lane geometry, boundaries, types, and speed limits, due to low precision maps and sensor errors, and fail to indicate which lane to choose.
Innovation Solution
A method and system that utilize a High Definition (HD) Map and camera-mounted image data to transform lane markings from a digital map coordinate system to a camera coordinate system, generating a lane guide sign that overlays precise lane information, such as lane geometry, boundaries, types, and speed limits, onto the real-time camera image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional navigation systems use low precision maps and sensor data for augmented reality navigation, then the system can provide basic direction guidance, but the lane information precision and accuracy deteriorate
Solution Approach 1:
The patent segments lane information into multiple discrete elements including lane markings, lane boundaries, lane geometry, and lane attributes. Each element is processed and displayed separately through augmented reality overlays, allowing precise representation of individual lane characteristics rather than treating road information as a single low-precision entity
Solution Approach 2:
The patent creates a high-definition digital copy of the road environment with precise lane markings and geometry data. This digital replica is then overlaid through augmented reality to replace or supplement the insufficient real-world visual information, providing accurate lane guidance even when physical lane markings are blurred or invisible
2Loss of information
If the system overlays direction guide signs on real road images, then the system can provide route indication, but the ability to show precise lane boundaries and geometry deteriorates
Solution Approach 1:
The patent transitions from two-dimensional direction signs to three-dimensional spatial overlays that conform to the actual lane geometry. Lane boundaries are rendered as extended spatial structures that follow the road's curvature and elevation, providing precise spatial guidance rather than flat directional indicators
Solution Approach 2:
The patent introduces augmented reality lane boundary overlays as an intermediary between the driver and the physical road environment. These virtual lane markings serve as a mediator that bridges the gap between low-precision sensor data and the driver's need for precise lane guidance, especially when physical markings are insufficient
Data Source
AI summary
A method for displaying lane information for a vehicle, includes obtaining a digital map; defining localization information of the vehicle; obtaining a route plan of the vehicle; determining a driving lane according to the localization information of the vehicle and the route plan of the vehicle; obtaining coordinates information of lane markings of the driving lane from the digital map; receiving image data from a camera mounted on the vehicle; transforming the lane markings of the driving lane from a coordinate system of the digital map to a coordinate system of the camera; generating a lane guide sign indicating the lane markings of the driving lane in the coordinate system of the camera based on the lane markings of the driving lane transformed to the coordinate system of the camera; and superimposing the lane guide sign of the lane markings of the driving lane on the image data received from the camera.