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A Method to Provide Accessibility for Visual Components to Vision Impaired
Azadeh Nazemi, Iain Murray
Pages - 54 - 69 | Revised - 05-04-2013 | Published - 30-04-2013
MORE INFORMATION
KEYWORDS
K. Vision Impaired, Bar Chart, Pie Chart, Line Chart, Function Graph, Text to
Speech, GNUPLOT, GraphicReader.
ABSTRACT
Non-textual graphical information (line graphs, bar charts, pie charts, etc.) are increasingly
pervasive in digital scientific literatures and business reports which enabling readers to easily
acquire the nature of the underlying information [1]. These graphical components are commonly
used to present data in an easy-to interpret way. Graphs are frequently used in economics,
mathematics and other scientific subjects. In general term data visualization techniques are
useless for blind people. Being unable to access graphical information easily is a major obstacle
to blind people in pursuing a scientific study and careers [2].This paper suggests a method to
extract implicit information of Bar chart, Pie chart, Line chart and math’s graph components of an
electronic document and present them to vision impaired users in audio format. The goal is to
provide simple to use, efficient, and available presentation schemes for non textual which can
help vision impaired users in comprehending form without needing any further devices or
equipments. A software application has been developed based on this research. The output of
application is a textual summary of the graphic including the core content of the hypothesized
intended message of the graphic designer. The textual summary of the graphic is then conveyed
to the user by Text to Speech software .The benefit of this approach is automatic providing the
user with the message and knowledge that one would gain from viewing the chart.
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Dr. Azadeh Nazemi
Electrical and Computer Engineering Department
Curtin University
Perth, WA - Australia
azadeh.nazemi@postgrad.curtin.edu.au
Iain Murray
Electrical and Computer Engineering Department
Curtin University
Perth, WA - Australia
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