Accessing mathematical formulae within digital documents is challenging for blind people. In particular, document formats designed for printing, such as PDF, structure math content for visual access only. While accessibility features exist to present PDF content non-visually, formulae support is limited to providing replacement text that can be read by a screen reader or displayed on a braille bar. However, the operation of inserting replacement text is left to document authors, who rarely provide such content. Furthermore, at best, description of the formulae are provided. Thus, conveying detailed understanding of complex formulae is nearly impossible. In this contribution we report our ongoing research on Axessibility, a LaTeX package framework that automates the process of making mathematical formulae accessible by providing the formulae LaTeX code as PDF replacement text. Axessibility is coupled with external scripts to automate its integration in existing documents, expand user shorthand macros to standard LaTeX representation, and custom screen reader dictionaries that improve formulae reading on screen readers.

Axessibility: a LaTeX Package for Mathematical Formulae Accessibility in PDF Documents

Dragan Ahmetovic;Tiziana Armano;Cristian Bernareggi;Michele Berra;Anna Capietto;Sandro Coriasco;Nadir Murru;Alice Ruighi;Eugenia Taranto
2018

Abstract

Accessing mathematical formulae within digital documents is challenging for blind people. In particular, document formats designed for printing, such as PDF, structure math content for visual access only. While accessibility features exist to present PDF content non-visually, formulae support is limited to providing replacement text that can be read by a screen reader or displayed on a braille bar. However, the operation of inserting replacement text is left to document authors, who rarely provide such content. Furthermore, at best, description of the formulae are provided. Thus, conveying detailed understanding of complex formulae is nearly impossible. In this contribution we report our ongoing research on Axessibility, a LaTeX package framework that automates the process of making mathematical formulae accessible by providing the formulae LaTeX code as PDF replacement text. Axessibility is coupled with external scripts to automate its integration in existing documents, expand user shorthand macros to standard LaTeX representation, and custom screen reader dictionaries that improve formulae reading on screen readers.
ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2018)
Galway, Ireland
22-24 ottobre 2018
Proceedings of the 20th International ACM SIGACCESS Conference on Computers and Accessibility
ACM
352
354
978-1-4503-5650-3
https://dl.acm.org/citation.cfm?id=3241029
Mathematical Formulae Accessibility
Dragan Ahmetovic, Tiziana Armano, Cristian Bernareggi, Michele Berra, Anna Capietto, Sandro Coriasco, , Nadir Murru, Alice Ruighi,Eugenia Taranto
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1687809
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