HUD Image Position Correction for Vibration and Gradient Overlap
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Solution Overview
Problem
Existing display systems, such as head-up displays (HUDs), experience position displacement of virtual images due to vibration and gradient corrections overlapping, leading to overcorrection and reduced accuracy in superimposing virtual images on actual views.
Innovation Solution
A display system that includes an information acquisition device, a posture detection device, a correction processing device, a gradient correction processing device, and a correction overlap amount setting unit, which calculates and adjusts the display position of virtual images based on posture variations and gradient differences, and sets a correction overlap amount to prevent overcorrection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration correction and gradient correction are both applied to the display position, then the accuracy of superimposition is improved, but overcorrection occurs leading to position displacement
Solution Approach 1:
The system calculates a correction overlap amount based on the relationship between vibration correction amount and gradient correction amount, and applies this feedback to adjust the total correction. The correction overlap amount setting unit uses the detected posture variation and gradient information to determine how much the two corrections overlap, then applies this feedback to prevent overcorrection while maintaining superimposition accuracy.
Solution Approach 2:
The system dynamically changes the correction parameters by calculating different correction amounts based on posture variation and gradient information. The correction overlap amount is determined as a parameter that adjusts the combined correction effect, allowing the system to adapt to different driving conditions and road gradients while avoiding overcorrection.
2Stability of the object's composition
If correction amounts are increased to compensate for posture variation, then display stability is improved, but position displacement occurs due to overcorrection
Solution Approach 1:
The system uses feedback by calculating the correction overlap amount based on the relationship between vibration correction and gradient correction. This feedback mechanism ensures that the total correction remains appropriate and prevents overcorrection that would cause position displacement, while still maintaining display stability through adequate correction.
Solution Approach 2:
The system applies partial correction by calculating only the necessary correction amount after accounting for the overlap between vibration and gradient corrections. Rather than applying full correction for each factor independently, the system applies a adjusted correction that accounts for the partial effect already provided by the other correction, avoiding excessive action.
Data Source
AI summary
A display system includes an information acquisition device that acquires a position of a moving body, a display processing device that controls display of an image based on information acquired by the information acquisition device, a posture detection device that detects a posture variation of the moving body, a correction processing device that sets a first correction amount based on the posture variation, a gradient correction processing device that sets a second correction amount based on gradient information and a superimposition destination position at which the image is superimposed on an actual view in a display direction of the image, and a correction overlap amount setting unit that sets a correction overlap amount by which the first correction amount and the second correction amount overlap. The display processing device controls display of the image based on the first correction amount, the second correction amount, and the correction overlap amount.