Braille Character Recognition Using Artificial Neural Network

Joko Subur, Tri Arief Sardjono, Ronny Mardiyanto

Abstract


Braille letter is characters designed for the blind, consist of six embossed points, arranged in a standard braille character. Braille letters is touched and read using fingers, therefore the sensitivity of the fingers is important. Those characters need to be memorized, so it is very difficult to be learned. The aim of this research is to create a braille characters recognition system and translate it to alpha-numeric text. Webcam camera is used to capture braille image from braille characters on the paper sheet. Cropping, grayscale, thresholding, erotion, and dilation techniques are used for image preprocessing. Then, artificial neural network method are used to recognize the braille characters. The system can recognize braille characters with 99% accuracy even when the braille image is tilted up to 1 degrees.

Keywords


Artificial neural network; Braille characters; Image processing; Webcam

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References


Jie Li and Xiaoguang Yan, “Optical Braille Character Recognition with Support-Vector Machine Classifier,” International Conference on Computer Application and System Modeling (ICCASM), 2010.

Namba and Zhang, ”Cellular Neural Network for Associative Memory and Its Application to Braille Image Recognition,” International Joint Conference on Neural Networks, BC, Canada, 2006.

Shreekanth. T and Udayashankara. V, ”A Review on Software Algorithms for Optical Recognition of Embossed Braille Characters,” International Journal of Computer Applications (0975-8887), volume 81-No.3, 2013.

OpenCV Reference Manual, v2.2, Desember 2010.




DOI: http://dx.doi.org/10.12962/j23546026.y2015i1.1048

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