Head-Mounted Vision Aid With Grid-Based Visual Distortion Correction
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Solution Overview
Problem
Current head-mounted devices (HMDs) do not address visual distortion symptoms in early stages of macular degeneration, limiting their ability to enhance vision for patients with this condition.
Innovation Solution
A head-mounted electronic vision aid device with a visual distortion correction method, featuring a movable grid system, user input unit, processing unit, and display unit, which allows users to select and correct distorted areas within their visual field by sending correction signals, performing calculations, and storing variations for real-time image correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a head-mounted device captures and displays images in real time to assist vision, then the ability to enhance vision is improved, but the capability to correct visual distortion in early-stage macular degeneration is lacking
Solution Approach 1:
The visual field is divided into a grid system with multiple regions, allowing independent correction of different distorted areas. Each grid cell can be individually selected and corrected based on local distortion characteristics, enabling targeted correction for early-stage macular degeneration while maintaining overall vision enhancement capability.
Solution Approach 2:
The grid system is designed to move and adapt to the user's visual field dynamically. The grid can be repositioned and resized based on real-time detection of visual distortion patterns, allowing the device to adapt to changing distortion characteristics as the user moves their eyes or as distortion evolves throughout the day.
2Adaptability or versatility
If the device provides comprehensive vision assistance for all macular degeneration stages, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The grid-based correction system serves multiple functions: it identifies distorted regions, provides correction control interfaces, and adapts to different stages of macular degeneration. This single grid system handles both early-stage distortion correction and supports the existing image capture and display functions, avoiding the need for separate complex subsystems.
Solution Approach 2:
The system automatically detects visual distortion patterns and generates correction parameters without requiring manual calibration by the user. The grid system self-adjusts based on real-time analysis of the displayed image, reducing the need for complex manual configuration interfaces while maintaining adaptability to individual user needs.
3Ease of operation
If the device uses a fixed coordinate system for image correction, then the device complexity is reduced, but the ease of operation for correcting visual distortion deteriorates
Solution Approach 1:
The coordinate system is made dynamic rather than fixed. The grid can move, resize, and reposition itself based on the detected distortion patterns and user interactions. This dynamic coordinate system adapts to different viewing conditions and distortion types, making correction operations more intuitive and easier to perform while maintaining manageable system complexity through automated adaptation.
Data Source
AI summary
Disclosed in the present invention is a head-mounted electronic vision aid device and a visual distortion correction method thereof. A display unit is configured to movably display a grid/grid group, a user input unit is configured to select at least one to-be-corrected part in the grid/grid group according to the real-time image feedback information viewed by a user, when the to-be-corrected part is selected, the user input unit sends a correction control signal for performing image correction on the to-be-corrected part in a coordinate system where the grid/grid group is currently located to a processing unit, the processing unit performs calculation processing on the correction control signal to obtain variations of the to-be-corrected part before and after correction in the coordinate system, a storage unit stores plurality of combinations of the variations of the to-be-corrected part, and a display unit can display an image after visual distortion correction according to the plurality of combinations of the variations stored in the storage unit. Compared with the prior art, visual distortion correction can be achieved quickly and intuitively, and the demands of low-vision users with different symptom progresses are met.