Overhead Image Generation for Vertical Obstacle Position Recognition
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Solution Overview
Problem
Current overhead image generation systems for vehicles do not effectively allow drivers to recognize the precise position of an approaching obstacle in the vertical direction, limiting their ability to respond appropriately.
Innovation Solution
An overhead image generation device and method that captures peripheral images of a vehicle, acquires approach information on obstacles, and generates an overhead image with an approach state image showing the obstacle's position relative to the vehicle in the vertical direction, allowing for a superimposed display that clearly indicates the obstacle's approach state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional overhead image generation is used, then the driver can recognize the general position of obstacles around the vehicle, but the driver cannot accurately recognize which specific position of the vehicle the obstacle is approaching
Solution Approach 1:
The patent applies dimensionality change by transitioning from a conventional 2D overhead view to a 3D spatial representation that includes vertical height information. The obstacle detection device calculates the height of obstacles relative to the vehicle and displays this vertical dimension, enabling drivers to recognize not only the horizontal position but also the vertical level (e.g., ground level vs. elevated positions) where obstacles are approaching.
Solution Approach 2:
The patent introduces an intermediary processing system that bridges the gap between raw sensor data and driver understanding. The obstacle detection device acts as an intermediary that receives data from image capture devices, processes it to extract vertical position information, calculates height relative to the vehicle, and presents this information in a visually intuitive format through the display device, thereby mediating the transformation of complex spatial data into actionable visual cues for the driver.
2Measurement precision
If multiple sensors and processing units are added to detect vertical obstacle positions, then obstacle position recognition improves, but system complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing the obstacle detection device to perform multiple functions using integrated components. The image capture devices serve both conventional overhead view generation and vertical height measurement functions. The processing unit simultaneously generates the overhead image, calculates obstacle heights, determines approach positions, and controls display presentation, thereby achieving enhanced functionality without proportionally increasing system complexity.
Solution Approach 2:
The patent merges multiple functions into a unified obstacle detection and display system. Rather than separate systems for overhead viewing and vertical detection, the patent combines image capture, processing, height calculation, and display control into an integrated device that delivers comprehensive obstacle awareness through a single coordinated system, reducing overall system complexity while maintaining measurement precision.
Data Source
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AI summary
To cause a driver to appropriately recognize which position of a vehicle an obstacle is approaching. An overhead image generation device includes: an image acquisition unit that acquires a peripheral image by capturing an image of a periphery of a vehicle; an approach information acquisition unit that acquires approach information indicating an approach state of an obstacle detected in the periphery of the vehicle to the vehicle; an overhead image generation unit that generates an overhead image A from the peripheral image by performing viewpoint conversion processing so as to look down on the vehicle from above in a vertical direction; an approach state image generation unit that generates an approach state image B showing an approach state of the obstacle to the vehicle for each position of the vehicle in the vertical direction, based on the approach information; and a display control unit that superimposes the overhead image A and the approach state image B and causes a display unit to display the superimposed image.