Parking Assistance Device Dynamic Overhead Image Display Range
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Solution Overview
Problem
Existing parking assistance devices fail to provide a clear view of the periphery of a towed vehicle, especially when the towing vehicle is long, as the area around the towed vehicle is blocked, limiting the visibility of the rear periphery in overhead images.
Innovation Solution
A parking assistance device that includes an overhead image generation unit, a towing determination unit, and an overhead image display range setting unit, which adjusts the display range to include a wider area when the towed vehicle is being towed, allowing for a more extensive view of the surroundings and improved visibility of the towed vehicle's periphery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same overhead image display range is used whether the towed vehicle is towed or not, then the display structure is simple, but the periphery of the towed vehicle cannot be seen when the overall vehicle length is long
Solution Approach 1:
The overhead image display range is dynamically adjusted based on the towing state. When the towing vehicle tows a towed vehicle, the display range is set to a second range that provides a wider view to include the towed vehicle periphery. When not towing, a first display range is used. This dynamic adjustment resolves the contradiction by adapting the display configuration to the actual operational conditions.
Solution Approach 2:
The display range parameter is changed according to the towing determination result. The system switches between different display range parameters (first display range vs. second display range) based on whether the towing vehicle is towing a towed vehicle, thereby optimizing the visibility of the towed vehicle periphery when needed while maintaining simplicity when not towing.
2Loss of information
If a wider display range is always used to see the towed vehicle periphery, then the visibility is improved, but the display area required increases
Solution Approach 1:
The display range is dynamically adjusted based on the towing state. The system uses a narrower first display range when not towing (reducing display area usage) and switches to a wider second display range only when towing a towed vehicle (increasing display area only when necessary). This resolves the contradiction by making the display area adaptive to actual needs.
3Measurement precision
If the overhead image is trimmed to a smaller range for normal display, then the display is focused on the towing vehicle, but the towed vehicle periphery is not visible when towing
Solution Approach 1:
The trimming range of the overhead image is dynamically adjusted based on the towing determination. When towing a towed vehicle, the system selects a second display range that trims the overhead image to include the towed vehicle periphery. When not towing, a first display range is used that focuses on the towing vehicle. This dynamic trimming strategy resolves the contradiction by adapting the image processing to the operational context.
Data Source
AI summary
A parking assistance device includes an overhead image generation unit generating an overhead image from a captured image obtained by capturing an image around a towing vehicle, a towing determination unit determining whether a towed vehicle is towed, an overhead image display range setting unit selecting a trimming range from a plurality of display ranges at least including a first display range and a second display range wider than the first display range, and a display image generation unit generating an overhead image for display by trimming the trimming range of the overhead image, and a display image including the overhead image for display on which the towing vehicle is superimposed. The overhead image display range setting unit selects the first display range when the towing vehicle does not tow the towed vehicle, and selects the second display range when the towing vehicle tows the towed vehicle.