Vehicle Side Mirror Simulation Using Image Rectification
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Solution Overview
Problem
Existing exterior mirror systems for vehicles suffer from image distortion due to wide-angle optics, which complicates the representation of camera images, and there is a need for a solution that provides a clear, undistorted view similar to conventional mirrors, especially during reversing, while also considering aerodynamic benefits by reducing wind resistance.
Innovation Solution
The system employs image rectification using a processing module that adjusts and enhances captured images by reorienting pixels to simulate the view of a conventional mirror, utilizing distortion correction algorithms and mathematical models to correct for wide-angle lens distortions, and adapts the field of view based on the vehicle's position and driver's needs, including an option for an extended rear view during reversing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If wide-angle optics are used to capture image data, then the field of view is expanded, but image distortion increases
Solution Approach 1:
The patent replaces the need for physical mirror adjustment mechanisms with an image processing system that uses rectification algorithms to correct wide-angle lens distortion, substituting mechanical mirror systems with electronic image processing to achieve undistorted views
Solution Approach 2:
The system dynamically changes image processing parameters including distortion correction coefficients and rectification algorithms based on the detected vehicle state (driving vs. reversing), allowing optimal image quality for different operational conditions
2Loss of energy
If physical exterior mirrors are removed to reduce wind resistance, then aerodynamic efficiency improves, but driver visibility and safety are compromised
Solution Approach 1:
The system creates a visual copy of what a conventional mirror would show by processing camera images through rectification algorithms that simulate the optical characteristics of traditional mirror glasses, allowing the driver to see undistorted images without physical mirrors
Solution Approach 2:
The patent introduces an image processing system as an intermediary between the camera and the driver, where the processing module acts as a mediator that transforms raw camera images into mirror-like representations that the driver can interpret naturally
3Measurement precision
If image rectification is applied to correct distortion, then image clarity improves, but processing complexity increases
Solution Approach 1:
The system performs preliminary calibration to determine the specific distortion characteristics of the camera system, storing these parameters for later use in real-time rectification, so that the actual image processing can use pre-computed correction factors rather than calculating distortion in real-time
Solution Approach 2:
The patent segments the image processing into distinct modules: a calibration module that characterizes distortion, a rectification module that applies corrections, and a display module that presents the corrected image, allowing each component to be optimized independently
Data Source
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AI summary
The unit has an optical sensor (6) fixed in a housing, and a lens allowing wide field imaging on planes of the optical sensor. Data connection is provided to a vehicle (8), and a display unit (20) e.g. LCD, is attached at a position of a side mirror in a viewing direction of a driver (9). The simulation unit adjusts an image corresponding to an image that reflects the side mirror with a defined reflective surface and curvature. An image of the display device simulates the side mirror with an additional lens or simulates adjustment of view to the driver. An independent claim is also included for a method for side mirror simulation of a vehicle.