Camera-Based Warning Threshold Setting With Distance Icons
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Solution Overview
Problem
Conventional threshold-value setting devices for warning systems have difficulty in allowing users to accurately set a threshold value for warning objects, as they lack clear indicators of distance and position in real space, making it challenging for users to determine the appropriate distance from the vehicle to the warning object.
Innovation Solution
A threshold-value setting device that includes a processor and image processor to generate and superimpose icons representing the warning object onto the camera image, allowing users to visually set the threshold value based on the size and shape of the icon, which corresponds to the designated distance, thereby enhancing the user's understanding of the distance in real space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a horizontal line is used to accept position designation in the camera image, then the device complexity is reduced, but the measurement precision of distance and position is insufficient
Solution Approach 1:
The patent creates a virtual copy of the warning object (icon) and superimposes it on the camera image at the designated position. This icon copy maintains the shape and size characteristics of the actual warning object, allowing users to visually understand the distance and position relationship without requiring complex measurement indicators. The icon serves as a visual representation that bridges the gap between simple interface design and accurate distance perception.
2Ease of operation
If no visual indicators are provided in the camera image, then the ease of operation is improved, but the understanding of distance in real space is poor
Solution Approach 1:
The patent utilizes visual characteristics of the icon (shape, size, and potential color coding) to convey distance and position information. The icon's visual properties change based on its position in the camera image, providing intuitive feedback to users about the threshold distance without requiring additional text or numerical indicators. This maintains ease of operation while preventing loss of distance information.
Data Source
AI summary
A threshold-value setting device sets a threshold value corresponding to a predetermined distance in order to give a user a warning about a warning object approaching within a distance less than the predetermined distance, and includes a threshold-value processor and an image processor. The threshold-value processor acquires a vertical position in a camera image obtained by image capturing of surroundings of the vehicle with the camera, i.e., a designated position in accordance with a user's operation and generates an icon having a size appropriate to the designated position and having a shape imitating the shape of the warning object. The image processor superimposes the icon on the designated position in the camera image and displays the icon-superimposed camera image on a display. The threshold-value processor sets the designated position as the threshold value in accordance with a determination operation performed by the user based on the displayed icon.