Head-Mounted Display Hazard Warning via Localized Virtual Images
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Solution Overview
Problem
Existing head-mounted display devices struggle to effectively estimate and alert users to potential dangers in their visual field without pre-prepared information, often blocking the visual field excessively and failing to support work safety by not being able to inform users of incidental dangers.
Innovation Solution
A head-mounted display device equipped with an image acquiring unit, a warning-information generating unit, and an image display unit that acquires images of the user's visual field, generates warning information based on temperature distribution or pattern recognition, and displays it as a virtual image, allowing for real-time detection of hazards without pre-prepared data, while minimizing visual field obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a visible image is superimposed on the entire area of the visual field, then the user can be informed of information, but the visual field of the user is excessively blocked
Solution Approach 1:
The patent applies local quality by superimposing warning information only at specific locations in the visual field where dangers are detected, rather than covering the entire visual field. The display unit selectively presents information at localized positions corresponding to detected hazard locations, thus maintaining visual clarity while delivering critical safety information.
2Measurement precision
If image recognition is performed based on pre-prepared dangerous area specifying information, then recognition accuracy is improved, but the system cannot cope with unexpected dangers
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple types of dangerous area specifying information representing various danger patterns and characteristics. When a danger is detected, the system selects and uses the appropriate pre-prepared information from storage, enabling both accurate recognition of known dangers and adaptability to unexpected situations through the diversity of pre-stored patterns.
Solution Approach 2:
The patent implements feedback by using detected danger information to select appropriate pre-prepared dangerous area specifying information, then presenting this information to the user through the display unit. The system continuously monitors the visual field, compares detected features with stored patterns, and provides real-time feedback to the user about identified hazards.
3Measurement precision
If temperature distribution image and visible ray image are used together, then component detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the temperature distribution image from the infrared image pickup unit with the visible ray image from the visible ray image pickup unit. The synthesis unit combines these two different types of image information to detect component abnormalities, leveraging both thermal and visual data to achieve accurate detection while managing system complexity through unified processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the user to be alerted to potential hazards in real-time within their visual field without pre-prepared information, supporting work safety by clearly indicating danger zones without obstructing the view, and providing procedural guidance during work tasks.
Implementation Method 1
a temperature distribution image acquired by an infrared image pickup unit
Data Source
AI summary
A head-mounted display device for enabling a user to simultaneously visually recognize a virtual image and an outside scene includes a warning-information generating unit configured to generate warning information, which is an image for calling the user's attention and an image display unit configured to cause the user to visually recognize the warning information as the virtual image.