Dynamic Parking Guide Line for Rear View Camera
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Solution Overview
Problem
Existing rear view camera systems for vehicle parking display fixed parking guide lines, which lose accuracy when the camera's position or angle changes, reducing the reliability of the parking assistance.
Innovation Solution
A device comprising a rear view camera, a height measurer, an angle measurer, and an image processor that measures the camera's position and angle, creates a dynamic parking guide line by mapping image points onto the camera's lens and sensor, and outputs this guide line through a display unit, ensuring accurate parking assistance regardless of camera placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed parking guide line is displayed using a rear view camera, then the device complexity is reduced, but the measurement precision of the parking guide line decreases when the camera position or angle changes
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed parking guide line to a dynamic guide line that automatically adjusts based on the camera's actual position and angle. The image processor dynamically calculates and redraws the guide line according to real-time camera parameters (height h and angle θ), ensuring the guide line remains accurate regardless of camera mounting variations.
Solution Approach 2:
The patent utilizes parameter changes by incorporating camera position parameters (height h and angle θ) into the guide line calculation. The image processor uses these parameters to transform the guide line equation from a fixed form to a variable form that adapts to different camera positions and angles, thereby maintaining measurement precision across various mounting conditions.
2Ease of operation
If the camera is mounted at any position or angle on the rear of the vehicle, then the ease of operation and installation is improved, but the reliability of the parking guide line decreases
Solution Approach 1:
The patent implements feedback by using the measured camera position and angle parameters to continuously adjust and recalculate the parking guide line. The height measurer and angle measurer provide feedback about the camera's actual state, and the image processor uses this feedback to generate an accurate guide line that reflects the current camera configuration, ensuring reliability regardless of mounting position or angle.
Solution Approach 2:
The patent achieves universality by creating a guide line system that works with any camera mounting position or angle on the vehicle. The system is designed to be universally applicable by accepting variable camera parameters and automatically adapting the guide line calculation, making the system reliable across diverse installation scenarios without requiring precise initial positioning.
Data Source
AI summary
A device for assisting rear parking of a vehicle including a rear view camera that is mounted on the rear of a vehicle; a display unit that displays an image taken by the rear view camera; a height measurer that measures the position of the rear view camera from the ground; an angle measurer that measures the inclination of the rear view camera from the ground; and an image processor that creates a parking guide line in the image taken by the rear view camera on the basis of information obtained by the height measurer and the angle measurer and outputs the parking guide line through the display unit.