Drive Assist Device Overhead View Back Door Visualization
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Solution Overview
Problem
Existing drive assist devices for vehicles with flip-up back doors lack intelligibility in displaying space availability for opening the back door, as images and warnings are not effectively integrated, making it difficult for drivers to visualize the opening and closing process.
Innovation Solution
A drive assist device that includes a captured image acquisition unit, a viewpoint conversion unit, a graphic image generation unit, and a display control unit, which converts and superimposes an overhead image of the vehicle with a graphic image of the back door in an open state onto a monitor, allowing drivers to easily check space availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate display of camera images and warning images is used, then device complexity is reduced, but intelligibility and ease of operation deteriorate
Solution Approach 1:
The patent merges the camera image display and warning image display into a single integrated display unit. The warning image is superimposed on the camera image within the same display area, allowing the driver to simultaneously view both the actual rear scene and the simulated back door opening trajectory without switching between separate displays, thereby improving ease of operation while maintaining acceptable device complexity
Solution Approach 2:
The patent introduces an intermediary graphical representation (the warning image showing back door opening trajectory) that mediates between the raw camera image and the driver's understanding of available space. This intermediary visual aid translates complex spatial relationships into an intuitive graphical format that is easily comprehensible while being integrated with the original camera feed
2Device complexity
If 2D camera images are displayed without viewpoint conversion, then device complexity is reduced, but three-dimensional visualization capability deteriorates
Solution Approach 1:
The patent applies viewpoint conversion to transform the 2D camera image into a perspective that simulates a top-down or elevated view of the back door opening trajectory. This dimensional transformation allows the driver to mentally visualize the three-dimensional opening path and assess spatial clearance more effectively, while the processing remains computationally manageable through standard image transformation techniques
Data Source
AI summary
A drive assist device allows a driver to favorably check space for opening a back door along with an image of a periphery of a vehicle. The drive assist device is configured: to perform a viewpoint conversion that converts an image captured by a vehicle-mounted camera, which image is of a scene in the periphery of the vehicle including at least an area rearward of the vehicle, into an overhead image showing the vehicle from above; to superimpose on the overhead image a graphic image showing a flip-up back door in an open state from the same viewpoint as that of the overhead image; and to allow the superimposed image to be displayed on a monitor device in a vehicle compartment.