Head-Mounted Vision Aid Automatic Magnification via Distance Ranging
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Solution Overview
Problem
Existing head-mounted electronic vision aid devices require cumbersome, inaccurate, and slow manual adjustments for image magnification, which is particularly challenging for visually impaired users who struggle to intuitively determine the necessary magnification for objects at different distances.
Innovation Solution
A head-mounted device equipped with a memory unit, processing unit, and image zooming unit, along with a ranging unit that obtains distance data and three-dimensional profile data, automatically adjusts magnification based on a stored correspondence table, allowing for intuitive and rapid image amplification of target objects, with optional user adjustment via touch, voice, or gesture recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of magnification is implemented through buttons or touch sliding, then users can control image zooming, but the adjustment process becomes cumbersome and slow especially for visually impaired users
Solution Approach 1:
The system automatically determines the target object and adjusts magnification without requiring user intervention. The processing unit identifies the target object in the captured image, calculates its distance, and automatically sets the appropriate magnification level, allowing the system to serve itself rather than requiring manual user control
Solution Approach 2:
The patent replaces manual mechanical adjustment (buttons, touch sliding) with an automated electronic system that uses image processing, distance calculation, and automatic magnification control. This substitution eliminates the need for physical manual operations while achieving the same functional goal more efficiently
2Measurement precision
If manual adjustment of magnification is used, then users can change zoom levels, but the adjustment becomes inaccurate when switching between preset magnifications
Solution Approach 1:
The system continuously monitors the captured image, identifies target objects, calculates their distances, and automatically adjusts magnification accordingly. This closed-loop feedback mechanism ensures accurate magnification selection by constantly comparing the current state with the desired state and making real-time adjustments
Solution Approach 2:
The patent changes the magnification parameter automatically based on calculated distance data. By establishing a relationship between distance and magnification level, the system selects appropriate magnification values without manual intervention, improving both precision and ease of operation
3Loss of information
If visually impaired users manually adjust magnification, then they can attempt to see target objects clearly, but they cannot intuitively determine the required magnification for objects at different distances
Solution Approach 1:
The system performs the complex task of determining required magnification automatically by analyzing image data and calculating distances. This eliminates the need for users to understand or intuitively determine magnification requirements, as the system handles this complex processing itself
Solution Approach 2:
The processing unit acts as an intermediary between the captured image and the display magnification. It analyzes the target object, calculates distance, determines appropriate magnification, and adjusts the display accordingly, shielding users from the complexity of magnification control while providing intuitive visual feedback
Data Source
AI summary
Disclosed in the present invention is a head-mounted electronic vision aid device and an image magnification method thereof. The head-mounted electronic vision aid device comprising a memory unit, a processing unit, an image zooming unit, and at least one ranging unit; the ranging unit being configured to obtain distance data between a target object of interest to a user and the device and/or three-dimensional profile data of the object and output the data to the processing unit; the memory unit stores a correspondence table between the distance data and the magnification of the image zooming unit; the processing unit confirms the target object of interest to the user, performs operations on the distance data and/or the three-dimensional profile data of the object, and outputs an magnification matching the distance data to the image zooming unit according to the correspondence table; and the image zooming unit can automatically adjust to the matching magnification. For visually impaired users, accurate, intuitive and rapid automatic magnification of the target objects of interest can be realized on demand. Compared with the prior art, the repeated and tedious manual adjustment is avoided, and the user experience is greatly improved.