Autonomous Text Reading Device for Visually Impaired Users
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Solution Overview
Problem
Current reading devices for blind or visually impaired persons are not autonomous and require significant user assistance, limiting their mobility and effectiveness in everyday life, as they often struggle with recognizing text under suboptimal conditions and require manual operation.
Innovation Solution
Development of an autonomous reading device with advanced image processing capabilities, using CCD or CMOS camera technology with a large field of view and adaptive pre-processing methods, allowing for independent text recognition and speech synthesis, and operable through speech or gesture control, enabling users to recognize and read text in various layouts and environments without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is required for text recognition, then device complexity is reduced, but ease of operation deteriorates for blind or visually impaired persons
Solution Approach 1:
The reading device autonomously detects text in the environment, processes images, recognizes text, and provides audio output without requiring blind or visually impaired users to manually operate buttons, switches, or positioning mechanisms. The device serves itself by automatically capturing images through integrated cameras, processing them through OCR algorithms, and delivering results through speech synthesis.
Solution Approach 2:
The patent replaces manual mechanical operation (buttons, switches, manual camera positioning) with automated electronic and optical systems. Image capturing units, processing units, and speech output units work together in an automated sequence, eliminating the need for mechanical user interaction while improving ease of operation for visually impaired persons.
2Productivity
If user assistance is required for text detection, then device complexity is reduced, but productivity deteriorates due to limited mobility and hands-free requirements
Solution Approach 1:
The reading device integrates multiple functions into a single autonomous system: image capturing units detect text in various environments (books, signs, labels, documents), processing units recognize text through OCR algorithms, and speech output units provide audio feedback. This multi-functional integration enables the device to handle diverse text recognition tasks without requiring user assistance, thereby improving productivity while maintaining manageable complexity.
3Measurement precision
If simple camera modules are used, then device complexity is reduced, but measurement precision deteriorates for text recognition under suboptimal conditions
Solution Approach 1:
The processing unit performs preliminary image processing operations before text recognition, including adjusting image parameters, enhancing contrast, correcting distortions, and optimizing image quality. This preliminary preparation of images ensures that even suboptimal images captured by simple camera modules can be successfully processed for text recognition, thereby improving measurement precision without requiring complex camera hardware.
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
The device provides optimal text recognition results even under suboptimal conditions, enhancing the mobility and usability of blind or visually impaired individuals by reducing the need for user-assisted pre-processing and offering intuitive operation, thus facilitating daily tasks such as reading signs, labels, and documents.
Implementation Method 1
an image capturing unit (6) attached to a first part (9) of the carrying unit, which image capturing unit (6) is configured to capture an image of an environment of the blind or visually impaired person
Data Source
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AI summary
A reading device for blind or visually impaired persons for recognizing and reading text passages comprises an image capturing unit being configured to capture an image of an environment of a blind or visually impaired person and to output image data corresponding thereto, an image processing unit being configured to process the image data such that text is recognized and extracted from the image data and to output text data corresponding thereto, a text outputting unit being configured to output data corresponding to the text data in a form noticeable or convertable to be noticeable by the blind or visually impaired person, and a carrying unit, configured to be carried on a body of the blind or visually impaired person, comprising a first part and a second part, the first part having the image capturing unit attached thereto such that an capturing area of the image capturing unit is movable in relation to the first part and the second part accommodating the image processing unit and the text outputting unit.