Image processing techniques to perform an autonomous system to translate relief braille into black-ink, called: Lectobraille

Author

Dubus, J.P. ; Benjelloun, M. ; Devlaminck, V. ; Wauquier, F. ; Altmayer, P.

Author_Institution

Lab. de Mesures Autom., Univ. des Sci. et Tech. de Lille-Flandres-Artois, Villeneuve d´´Ascq, France

fYear

1988

fDate

4-7 Nov. 1988

Firstpage

1584

Abstract

The principles of relief acquisition with the use of a camera and a frame memory controlled by a microcomputer are presented. The use of spatial filtering techniques, especially polynomial filtering, followed by median filtering, erosion, and dilatation, permits the contrasted relief to be extracted from the bottom. After thresholding, an adaptive recognition method is applied, using projection of the braille characters to supply the braille-coded chain of the text.<>

Keywords

computerised picture processing; handicapped aids; microcomputer applications; Lectobraille; adaptive recognition method; autonomous system; braille characters projection; braille to black ink translation; braille-coded chain; camera; dilatation; erosion; frame memory; image processing technique; median filtering; microcomputer control; polynomial filtering; spatial filtering techniques; thresholding;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE

Conference_Location

New Orleans, LA, USA

Print_ISBN

0-7803-0785-2

Type

conf

DOI

10.1109/IEMBS.1988.94726

Filename

94726