Vehicle Camera Calibration Panel With Adaptive Target Graphics
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Solution Overview
Problem
Current vehicle sensor calibration systems are inefficient due to the need for multiple target panels, time-consuming setup, and high computational complexity, especially when dealing with various vehicle makes and models, which complicates precise positioning and calibration.
Innovation Solution
A system comprising a base unit, support structure, vehicle calibration assistance structure with a target panel, and a processing system that uses optical devices for precise positioning and generates virtual graphical features based on vehicle input data, allowing a single target panel to adapt to different vehicles and reducing the need for physical panel changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple target panels are used for different vehicle makes and models, then calibration precision is improved, but device complexity and workshop space requirements increase
Solution Approach 1:
The patent implements a single target panel that can display multiple different graphical features corresponding to different vehicle makes and models. The processing system selects and displays the appropriate graphical feature based on vehicle identification data, making one panel serve multiple calibration functions that previously required multiple separate panels.
Solution Approach 2:
The patent changes the display parameters of the target panel dynamically. The processing system modifies the graphical features displayed on the target panel based on the identified vehicle type, allowing the same physical panel to present different calibration patterns optimized for specific vehicle makes and models.
2Measurement precision
If multiple target panels are stored in the workshop, then calibration precision for different vehicles is improved, but workshop space requirements increase
Solution Approach 1:
The patent implements a single target panel that can display multiple different graphical features corresponding to different vehicle makes and models. The processing system selects and displays the appropriate graphical feature based on vehicle identification data, making one panel serve multiple calibration functions that previously required multiple separate panels.
Solution Approach 2:
The patent uses digital copying of graphical features onto a single physical panel. Instead of storing multiple physical panels, the system stores digital representations of various calibration patterns and projects or displays them on one panel as needed, significantly reducing physical storage requirements.
3Speed
If optical devices are used for automatic positioning, then positioning speed is improved, but positioning precision deteriorates
Solution Approach 1:
The patent divides the positioning process into two distinct phases: a rough positioning phase using optical devices for quick alignment, followed by a precision positioning phase using image processing of graphical features for accurate final positioning. This segmentation allows each method to optimize for its strength.
Solution Approach 2:
The patent performs preliminary rough positioning using optical devices to bring the vehicle and target panel into approximate alignment quickly. This preliminary action prepares the system for the subsequent precise positioning step, making the overall process both fast and accurate.
4Adaptability or versatility
If image deformation processing is performed for screen calibration, then calibration adaptability is improved, but computational complexity and system cost increase
Solution Approach 1:
Instead of deforming the displayed image to compensate for positioning errors, the patent inverts the approach by using the detected positioning errors to calculate and display the correct undistorted graphical features. The processing system determines what features should be displayed based on the actual relative position, eliminating the need for complex real-time image deformation processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient, precise, and cost-effective calibration of vehicle sensors by allowing a single target panel to display vehicle-specific graphical features, reducing setup time and computational complexity while maintaining high precision.
Implementation Method 1
an optical device oriented towards the service area to image the vehicle and a processing system operatively connected to the optical device and to the vehicle calibration assistance structure to generate an image of an image of a graphical feature displayed on the target panel as seen by the camera of the vehicle
Data Source
AI summary
A system for adjusting a sensor of a vehicle comprises: a base unit; a support structure connected to the base unit; and a vehicle calibration assistance structure mounted on the support structure and including a target panel, which has a surface facing forward towards a service area. The surface of the target panel bears a combination of predetermined graphical features, and the vehicle is positioned in the service area. A processing system is operatively connected to the vehicle calibration assistance structure. A positioning device aids with the relative positioning between the vehicle and the vehicle calibration assistance structure.