Session
2a about "Media Issues and Hypertext" boasted of two
nominations for the Best Paper Award, namely the third
contribution on the agenda about "Generating Presentation
Constraints from Rhetorical Structure," a project by several
authors and presented by Lloyd
Rutledge (Amsterdam),
and the first paper, presented by Carole
Goble
(University of Manchester) (another contribution by several
authors), about "The Travails of Visually Impaired Web
Travelers," which inspired the title of the present section.
Ranking second was a paper (presented by Jason M.
Smith, University of North Carolina at Chapel Hill,
with two co-authors) about an algorithm allowing frame
sections in video sequences to be traced. A possible use of
this technology, which probably has not yet been
implemented, could be in tracing images in crowd scenes. As
the contribution about visually impaired web travelers won
the Best Paper Award, it may be appropriate to concentrate
on it in more detail.
Carol Goble, Simon
Harper, and Robert Stevens (who is the
visually impaired person in the team of authors) took the
traveling metaphor for "browsing" in the Internet seriously,
presenting basic conceptual principles and some first
practical results of their studies. Their main objective is
to make it easier for visually impaired persons, or even
enable them, to use what the web has to offer, especially
through the development of software environments which can
translate and represent (e.g. by description in words)
orientation, navigation and mobility aids for this group.
One example was analyzed on the basis of the
"Internet
Movie Database" both
by means of Netscape and by means of a special browser (IBM
Home Reader). Nearly all objects which constitute cues for
interpretation to users able to see turn into obstacles for
people visually impaired (Proceedings, p. 7):
"The IMDB is a particularly bad
design as no alternatives to the graphics are given, no
description tags are included and none of the headings,
menus, searches are labeled as such."
The authors are currently
conducting a major study with a group of twenty, and seven
web offerings. I consider this project worthwhile also
because it tries to establish the basic principles of how
impaired persons find their orientation, move, and reach
their destinations in the real world. This analogy between
traveling in the real world and finding ones way in
the virtual world generates sufficient productive insights
even if it is obvious (which the authors do not expand on)
that the virtual world of the web has no real
three-dimensional characteristics.
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