[accessibleimage] Re: SVG maps

Hi all,
A Scalable Vector Graphic (SVG) is essentially still an image, but with
text tags attached to objects. But the image itself is stored in vector
format, so rather than record the colour of every dot which makes up the
image (bitmap - Jpg, gif, bmp) it uses equations to define lines,
shapes, objects, colour etc.

In theory an SVG viewer could generate a list of text tags, and possibly
allow you to tab through the image to its various objects, but because
it is still an image it is unlikely to be fully accessible with just a
screen reader.

Whilst SVG is still a fairly new technology, it can be created by most
of the common vector graphic design applications (Corel, Illustrator
etc), as well as specialist software like IVEO Converter from ViewPlus.

ViewPlus have been working with this format for several years now, and
it's at the core of the IVEO touchpad which can quickly produce and
rescale tactile audio images.

When the sun rises on their part of the world, I'm sure they will be
able to provide a bit more information for those interested.

Lisa - depending what you are doing you may not need to record WAV
files, but instead have the text labels in the image voiced.

Dave Gunn

Technical Manager
RNIB National Centre for Tactile Diagrams
Web: http://www.nctd.org.uk

-----Original Message-----
From: accessibleimage-bounce@xxxxxxxxxxxxx
[mailto:accessibleimage-bounce@xxxxxxxxxxxxx] On Behalf Of Lisa Yayla
Sent: 25 January 2006 10:39
To: accessibleimage@xxxxxxxxxxxxx
Cc: accessibleimage@xxxxxxxxxxxxx
Subject: [accessibleimage] Re: SVG maps

Hi,
That I don't know. SVGs are text files so would have thought it would
work. 
Perhaps Chris could answer that? 
Best,
Lisa

accessibleimage@xxxxxxxxxxxxx skriver:
>I'd heard that smart vector graphics are not currently accessible to  
>screen readers.


Lisa Yayla
Huseby Kompetansesenter 
Oslo Norway
lisa.yayla@xxxxxxxxxx



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