Vehicle AR Display Alignment Across Dual Camera Coordinate Systems
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Solution Overview
Problem
Existing vehicle systems face challenges in overlaying augmented reality (AR) graphic objects on forward view images due to mismatched coordinate systems between cameras, leading to inconsistent and inaccurate displays.
Innovation Solution
A user interface apparatus with a first camera for capturing a forward view image, an interface unit to receive object information from a second camera, and a processor to convert and overlay AR graphic objects in a compatible coordinate system, ensuring accurate alignment with the forward view image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two cameras are used to capture object information and forward view image, then the system can provide AR graphic objects, but the coordinate system inconsistency causes misalignment between AR graphic objects and forward view image
Solution Approach 1:
The patent introduces a coordinate system conversion mechanism as an intermediary between the two cameras' different coordinate systems. The processor converts object information from the second camera's coordinate system to the first camera's coordinate system, enabling accurate alignment of AR graphic objects with the forward view image while maintaining the benefits of using two separate cameras.
Solution Approach 2:
The patent changes the coordinate system parameter of the object information data by performing mathematical transformation. The processor converts the coordinate values from the second camera's reference frame to match the first camera's reference frame, thereby resolving the misalignment issue without changing the physical camera setup.
2Manufacturing precision
If coordinate system conversion is performed to align AR graphic objects with forward view image, then alignment accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent performs coordinate system conversion as a preliminary processing step before generating and displaying AR graphic objects. By converting the object information to the correct coordinate system in advance, the system simplifies subsequent rendering operations and ensures accurate alignment without adding complex real-time transformation operations during display.
Data Source
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AI summary
Disclosed is a user interface apparatus for a vehicle, including: a first camera configured to capture a forward view image including an object; an interface unit configured to receive information about the object from a second camera; a display; and a processor configured to convert the information about the object in a coordinate system of the second camera with respect to the first camera, generate an augmented reality (AR) graphic object corresponding to the object, and control the display so as to overlay the AR graphic object on the forward view image.