Dynamic Coordinate Transformation for Moving Vehicle Parking Assist
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional parking assist systems are ineffective when started while the vehicle is moving, as deviations in coordinates occur due to vehicle movement, leading to reduced accuracy in guiding the vehicle to the target parking position.
Innovation Solution
A parking assist device that includes a detector to identify the target parking position from captured images, a display unit to show the images, a position identifier to calculate relative coordinates based on the vehicle's movement, and a parking assist unit to guide the vehicle to the target position, allowing the system to start and maintain accuracy even while the vehicle is moving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the parking assist is started while the vehicle is moving, then the usability and responsiveness of the system is improved, but the accuracy of parking guidance deteriorates due to coordinate deviations caused by vehicle movement
Solution Approach 1:
The system dynamically adjusts the coordinate system to match the vehicle's current position and orientation. The display coordinates are transformed based on real-time vehicle state, allowing the parking frame to remain accurately aligned with the target position even as the vehicle moves. This dynamic coordinate transformation enables the system to start while moving without sacrificing guidance accuracy.
Solution Approach 2:
The system continuously monitors vehicle position and movement, and uses this feedback to real-time update the coordinate transformation parameters. By incorporating vehicle state feedback into the coordinate system adjustment, the display accurately reflects the relationship between the vehicle and target parking position throughout the maneuver, maintaining precision even during motion.
2Measurement precision
If the parking assist requires the vehicle to be stationary before starting, then the accuracy of parking guidance is maintained, but the productivity and response time of the system deteriorates
Solution Approach 1:
The coordinate system is designed to be dynamic rather than static, automatically adapting to vehicle movement. This eliminates the need for the vehicle to be stationary before starting the parking assist, as the system continuously adjusts coordinates to maintain accuracy. The dynamic nature of the coordinate transformation enables immediate system activation while preserving guidance precision.
Solution Approach 2:
The system performs preliminary coordinate transformation setup in advance, establishing the transformation parameters based on the vehicle's current state before the parking maneuver begins. This preliminary configuration of the dynamic coordinate system allows the vehicle to be in motion when the parking assist starts, without requiring a stationary period for coordinate calibration.
3Ease of operation
If the parking frame image is displayed before the target parking position is set, then the user experience is improved, but coordinate deviations are not eliminated affecting parking accuracy
Solution Approach 1:
The system implements continuous feedback between the vehicle position data and the display coordinate system. As the vehicle moves or the target position is determined, the coordinate transformation parameters are updated in real-time, ensuring that the parking frame image remains accurately positioned. This feedback mechanism allows early display of the parking frame while maintaining coordinate precision throughout the process.
Solution Approach 2:
The coordinate system associated with the parking frame display is made dynamic, automatically adjusting to vehicle movement and target position changes. This dynamic coordinate adjustment enables the parking frame to be displayed early in the process while maintaining accurate spatial relationship representation, resolving the conflict between early display and coordinate accuracy.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
According to one embodiment, a parking assist device (100) includes a detector (38) configured to detect a target parking position from a captured image obtained from an imager (15); a position identifier (42) that identifies, during a period while the vehicle is moving after the captured image was displayed on the display device (8) and before a captured image captured next by the imager (15) is displayed, the target parking position with respect to a current position of the vehicle, based on a first moving amount by which the vehicle has moved since the captured image was displayed on the display device (8) and on a positional relation between the vehicle and the target parking position at the time when the captured image was captured; and a parking assist unit (44) that guides the vehicle during the period based on the identified target parking position when a request for guiding the vehicle to the target parking position is made.