Vehicular Display System Blind Area Coverage
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Solution Overview
Problem
Existing vehicular display systems fail to adequately show blind areas around vehicles, leading to potential collisions during reverse and forward parking, and cause driver discomfort due to differing angles of view between rear-view and front-view images.
Innovation Solution
A vehicular display system that generates rear-view and front-view images from virtual viewpoints positioned within the cabin, allowing both views to be shown at the same angle, providing a comprehensive view of blind areas and improving visibility by aligning the angles of view for seamless switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the virtual viewpoint is fixed at the driver's seat position, then the system structure is simple, but blind areas near left and right sides of the front or rear portion cannot be sufficiently shown
Solution Approach 1:
The patent introduces a longitudinal dimension for virtual viewpoint positioning within the cabin, moving beyond the fixed driver's seat location. By allowing viewpoints to be set at different positions along the longitudinal axis of the cabin, the system achieves comprehensive coverage of blind areas without increasing overall system complexity, as it uses the same imaging and processing components with enhanced configurability.
2Loss of information
If the angles of view of front-view and rear-view images are expanded to cover blind areas, then blind area coverage is improved, but driver discomfort increases due to differing angles of view
Solution Approach 1:
The patent applies different angle of view settings to different viewing contexts (front-view versus rear-view images). Each virtual viewpoint is configured with an angle of view optimized for its specific location and purpose, allowing comprehensive blind area coverage while maintaining appropriate visual characteristics for each view type, thereby reducing driver discomfort during switching.
Solution Approach 2:
The system dynamically adjusts the angle of view based on the selected virtual viewpoint and viewing direction. When the viewpoint position or viewing direction changes, the angle of view is automatically adjusted to maintain optimal visual presentation, ensuring consistent driver comfort across different front-view and rear-view image displays.
3Loss of information
If the virtual viewpoint is positioned to maximize blind area coverage, then blind area coverage is improved, but the viewpoint may be positioned too far from the driver's actual viewing position
Solution Approach 1:
The patent extends the viewpoint positioning capability into the longitudinal dimension within the cabin, allowing virtual viewpoints to be positioned at multiple locations along the cabin's length. This dimensional expansion enables the system to optimize viewpoint positions for maximum blind area coverage while maintaining a reasonable relationship to the driver's actual position, as viewpoints are confined within the cabin space rather than positioned arbitrarily far from the driver.
Data Source
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AI summary
[Task] To show a view image of a necessary and sufficient range including a blind area in a mode with superior visibility. [Solution] A vehicular display system includes: an imaging unit (2) that captures an image of a surrounding area of a vehicle; an image processing unit (3) that converts the image captured by the imaging unit (2) into a view image that is an image of the surrounding area of the vehicle seen from inside of a cabin; and a display unit (4) that shows the view image generated by the image processing unit (3). The image processing unit (3) can generate, as the view image, a rear-view image and a front-view image, the rear-view image being acquired when an area behind the vehicle is seen from a first virtual viewpoint located in the cabin, and the front-view image being acquired when an area in front of the vehicle is seen from a second virtual viewpoint that is located behind the first virtual viewpoint in the cabin. The display unit (4) shows the rear-view image when the vehicle travels backward, shows the front-view image when the vehicle travels forward, and shows both of the view images at substantially the same angle of view.