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how to detect images having math expressions

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From: Shrirang Prakash Sahasrabudhe
Date: Jun 4, 2008 3:00AM

Hi,
Is there any programmatic way of detecting use of math expressions inside images?
How do existing accessibility checkers deal with it?
Something like looking at height and width?
"This error is generated for all img elements that have a width and height greater than 100. "
http://checker.atrc.utoronto.ca/servlet/ShowCheck?check=135
Looking for pointers to related research.
Thanks.
Shrirang Prakash Sahasrabudhe
Accessibility specialist- Web 2.0 Research Lab
Infosys Technologies Ltd- Bangalore
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