Vehicle Display Overlay Alignment Using Camera-Radar Correction
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Solution Overview
Problem
Existing display devices face issues with misalignment and erroneous recognition of vehicle images due to variations in road slopes and confusing patterns, leading to inaccuracies in superimposed virtual images.
Innovation Solution
A display device that integrates camera and radar sensor data to calculate and correct the position of vehicle images in virtual superimposition, using distance measurements from radar sensors to adjust the position based on the actual vehicle location, thereby reducing the influence of erroneous camera-based recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the integrated position is corrected to be closer to the image recognition position, then the alignment accuracy is improved, but the reliability deteriorates due to erroneous recognition
Solution Approach 1:
The patent changes the correction parameter from a fixed uniform correction to a dynamic correction based on distance measurement values. The correction amount is adjusted according to the distance to the other vehicle, with larger corrections for farther vehicles and smaller corrections for nearer vehicles, thereby adapting the correction strength to the specific situation
Solution Approach 2:
The patent introduces dynamic adjustment of the correction amount based on real-time distance measurement values from the radar sensor. The correction amount varies dynamically with the distance to the other vehicle, transitioning from static uniform correction to dynamic adaptive correction
2Measurement precision
If the position is corrected uniformly regardless of distance, then the alignment is improved, but the erroneous recognition influence increases
Solution Approach 1:
The patent applies different correction amounts to different distance ranges. Nearer vehicles receive smaller correction amounts while farther vehicles receive larger correction amounts, creating a localized correction strategy that adapts to the specific distance context of each detected vehicle
Data Source
AI summary
A display device includes a recognition generation unit that performs vehicle recognition based on detection results of a camera and radar sensors and generates a virtual image for superimposition including a vehicle image representing another vehicle, and a display control unit that displays the virtual image for superimposition on a display unit of the vehicle. The recognition generation unit calculates an image recognition position using an image captured by the camera, calculates an integrated position using the detection results of the camera and the radar sensors and corrects the integrated position so as to make the integrated position closer to the image recognition position to calculate a corrected integrated position. The display control unit corrects the position of the vehicle image in the virtual image for superimposition based on a distance measurement value to the other vehicle using the radar sensors, the integrated position, and the corrected integrated position.