Braille refreshable display using Arduino for visually challenged people (original) (raw)
Related papers
Design and Implementation of Digital Braille System for The Visually Impaired
According to World Health Organization (WHO), there are approximately 2.2 billion people who are visually impaired in the world (Oct, 2019). Braille is a tactile writing system used by people who are visually impaired and is typically written on embossed paper. Reading is the most important form of learning. According to Varao Sousa [11] , reading reduces mind wandering and increases understanding. For visually impaired people, reading refers to braille reading through touch. In this digital age, where everything is done online, the visually impaired have a hard time trying to access digital content or read electronic documents. Digital braille or electronic braille is a way in which the visually impaired can access information using electronic braille displays where the digital content on screen is converted into braille and is made available for use. Many electronic braille systems are printed onto paper and this form of braille is susceptible to wear and tear. Most electronic braille systems used are very expensive especially in developing countries such as India. Hence, we are proposing a digital braille system that is affordable and easy to use. The digital braille system designed converts digital text from documents to braille using python script. The system is driven by electromagnetic push-pull solenoids connected to an Arduino Uno board. The vertical movements of the solenoids represent the braille characters. Each character is read and the corresponding dots representing the character in the braille alphabet is displayed. The system can also be a handy tool for teaching and training the visually impaired people.
A Smart Reader for Blind People
This work introduces smart reader by using raspberry pi. The system consists of a camera interfaced with computer which receives the printed or hand written text. This work proposes the novel implementation of smart book reader with raspberry pi controller.The system consists of a webcam interfaced with raspberry pi which accepts a page of printed text. The experimental results are done with the help of raspberry pi controller. Controller coding for the Raspberry pi is done through PYTHON language. The audio output is obtained after the captured image is converted to text. The image captured by the camera is converted to text and displayed in the form window and then the text is obtained as audio output. Raspberry pi has the audio port where the output can be heard through the headphone or the speaker. Once the image is converted to text raspberry pi takes few mille seconds to convert it as a voice output. This system is validated with both simulation and experimental verification it achieves the text document is converted with speech for the use of visually impaired people.
Design and Implementation of Standalone Language Independent Universal Electronic Reader for Blind
Visually impaired people are always deprived of reading the conventional printed text. Available solutions so far suggest the conventional text to be converted into Braille or audio. However this is a very tedious & costly process. Moreover, these solutions are available to limited languages, and not all the conventional books can straightaway be converted into these special forms at the time of release. The proposed design, “Universal Reader for Blind” is addressing this concern. The OPT101 optical sensor array is used to sense the black text on white paper. TI’s C2000 Delfino TMS320F28335 microcontroller will accept the sensed data through the 16 analog channels for further processing. The embedded firmware using CCS IDE is implemented which will retrieve the logic of pattern regeneration using preprogrammed static database mapping with adjustable ambient threshold. The character is regenerated using a solenoid array in combination with ULN2803 producing mechanical motion on corre...
IJCTA July-August 2014_Embedded_Optical_Braille_Recognition_on.pdf
Optical Braille recognition is used to digitize and reproduce texts that have been produced with noncomputerized systems, such as with Braille typewriters. Digitizing Braille texts also helps reduce storage space, as Braille texts take up much more space than their natural language counterparts. Editing and Reprinting of Braille document that were embossed on paper are time consuming and labour intensive. Optical Braille recognition is also useful for people who cannot read Braille, but need to access the content of Braille documents. This paper is on Methodology of a camera based assistive device that can be used by people to read Braille document. The framework is on implementing image capturing technique in an embedded system based on Raspberry Pi board.
2015
Braille alphabet is an important tool that enables<br> visually impaired individuals to have a comfortable life like those<br> who have normal vision. For this reason, new applications related to<br> the Braille alphabet are being developed. In this study, a new<br> Refreshable Braille Display was developed to help visually impaired<br> individuals learn the Braille alphabet easier. By means of this system,<br> any text downloaded on a computer can be read by the visually<br> impaired individual at that moment by feeling it by his/her hands.<br> Through this electronic device, it was aimed to make learning the<br> Braille alphabet easier for visually impaired individuals with whom<br> the necessary tests were conducted.
Single Cell Bangla Braille Book Reader for Visually Impaired People
2018 International Conference on Bangla Speech and Language Processing (ICBSLP), 2018
Braille is a tactile system to represent text. A text in braille consist of several braille cell where each cell represent an alphabet or symbol. A single cell consist of 6 individual dots. Combination of raising high and raising low of these pins compose an alphabet. There is a standard braille code for each alphabet of most of the languages. Generally texts are embossed on paper and visually impaired persons move finger over the dots to read text. Our hypothesis is to keep the users fingers rest over the cell and actuate cell pins in such way that it can make feel like moving finger over cells. In this paper, we will show the design and development of a low cost portable braille book system with only one braille cell along with its experience with the real users. Besides all the available braille devices the challenges was to build such a system in so small space. We tested the device for several months with 10 users. They were able to read through this device and got different feedback from them.
Smart Braille System Recognizer
Braille is a system that allows visually impaired people to write and read. It utilizes the finger touch on raised dots produced by specialized machine. In this paper, we propose a fully system to recognize characters for a single side Braille document. We also present an extensive review for Braille Recognition systems and related research efforts. Our Braille recognition system is entirely flexible to the size of the scanned image. We improve each step starting from the image acquisition until the Braille cell recognition final stage. Our system includes an image acquisition stage, image preprocessing for noise removal, modified image segmentation, feature extraction, and then character recognition. Our proposed system achieved over 94.39% dot recognition accuracy. Moreover, our system is applicable to any language and to both Grades one and two.
Design of Text-to-Braille Digitized Device based on Android and Arduino Uno with Remote Module
IRJET, 2022
The objective is to utilize Arduino to make a Text to Braille Converter. The current adaptation considers Braille for the English language. There are two sorts of Braille frameworks: static and dynamic. A set plan for addressing the English 26 letters requires static braille spots of 3x2 lattice measurement. The characters are punched as dabs on paper or metal blocks. To understand reports, a static Braille system needs a large number of archives to be transmitted. This weight is reduced by using a strong braille structure. Braille is a physical system for addressing text. A Braille book is made up of a few braille cells, each of which addresses a letter in order or photograph. A single cell is made up of six distinct spots. A mixture of these pins lifted high and low frames a letter in the sequence. Many languages have a standard braille code for each letter in the alphabet. Writings are typically emblazoned on material, and visually impaired people brush their fingertips over the dabs to read the content. Because of mechanical advancements in various fields of study, Braille engineering is advancing at a rapid pace. Several languages, including English, French, and Spanish, can be written and read using Braille code. The idea is for the client's fingertips to be placed on the cell, causing cell pins to reproduce, rubbing a finger over cells.
IJERT-Drushti- A Smart Reader for Visually Impaired People
International Journal of Engineering Research and Technology (IJERT), 2018
https://www.ijert.org/drushti-a-smart-reader-for-visually-impaired-people https://www.ijert.org/research/drushti-a-smart-reader-for-visually-impaired-people-IJERTCONV6IS15008.pdf According to the World Health organization (WHO), 285 million people are estimated to be visually impaired worldwide, among which 90% live in developing countries and forty five million are blind individuals worldwide. Though there are many existing solutions to the problem of assisting individuals who are blind to read .In particular, there is a need for a portable text reader that is affordable and readily available to the blind community. This project proposes a smart reader for visually challenged people using Raspberry Pi. This paper addresses the integration of a complete Text Read-out system designed for the visually challenged. A camera will be used to take input, speaker and LCD to give output. The system consists of a webcam interfaced with Raspberry Pi which accepts a page of printed text. The OCR (Optical Character Recognition) package installed in Raspberry Pi scans it into a digital document. Once it is scanned, the text is read out by a text to speech conversion unit (TTS engine) installed in Raspberry Pi. The output is fed to an audio amplifier before it is read out. The image to text conversion and text to speech conversion is done by the OCR software installed in Raspberry Pi. The system finds its interesting applications in libraries, auditoriums, offices where instructions and notices are to be read and also assists in filling of application forms.
Optical Character Recognition Based Hand-Held Device for Printed Text to Braille Conversion
In this paper we propose to develop a device that can be used by the visually challenged to read normal English books. Here we focus on letter-by-letter segmentation, recognition and transliteration to the Braille format. The device would use on board software to do the recognition and conversion. The recognized characters are transmitted to the interface which converts the characters to the Braille format which can be felt-read by the visually challenged. The device would be cheaper among its counterparts.