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Re: how to detect images having math expressions

for

From: Jukka K. Korpela
Date: Jun 4, 2008 4:00AM

Steve Green wrote:

> It would probably be more cost effective and reliable to
> produce a list of all the images and have someone (this need only be
> a very cheap resource) look at them all and flag any that contain
> text or math expressions.

It would be even better to ask a human tester to evaluate all images for
accessibility. Texts that contain text or math are just a special case,
and it's probably better to work out all images in one pass. They should
of course be evaluated in context, since it is generally impossible to
judge what is an appropriate alt text just by looking at the image. (For
example, an image might be purely decorative, calling for alt="", in
some context, and a content-rich image requiring a longish textual
alternative in another.)

Jukka K. Korpela ("Yucca")
http://www.cs.tut.fi/~jkorpela/