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# Math: Converting to Images - PowerPoint PPT Presentation

Math: Converting to Images. Yuping Tseng Grainger Engineering Library Information Center University of Illinois at Urbana-Champaign http://dli.grainger.uiuc.edu • ytseng1@uiuc.edu. Math: Converting to Images. What to convert?

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### Math: Converting to Images

Yuping Tseng

Grainger Engineering Library Information Center

University of Illinois at Urbana-Champaign

http://dli.grainger.uiuc.edu • ytseng1@uiuc.edu

Collaborating Partners Workshop

Math: Converting to Images

• What to convert?

• All independent formulas, I.e. formulas with <dformula> tag.

• Some inline formulas, formulas inside a text line or a table, with specific patterns such as radical or fraction.

Collaborating Partners Workshop

Math: Converting to Images

• How to convert?

• Display document in Internet Explore

• Hide irrelevant information leaving only the target formula

• Resize the display window to fit in the formula

• Trim blank and check if there is unknown symbol (shown in red)

• Capture the display window and convert the image to JPEG format.

• Process is fully automated (Visual Basic)

Collaborating Partners Workshop

Math: Converting to Images

• Modify original XML file

• Insert additional attributes in the formula tag

• For independent formulas

• For example: <DFORMULA ID="E1" xml:link="simple" href= "DFORMULA_E1.jpg" show="embed" actuate="auto" title="Mathematical Equation E1">

• Inline formula with specific patterns

• For example: <FORMULA ID="CNT2_0" xml:link="simple" href="FORMULA_CNT2_0.jpg" show="embed" actuate="auto" title="Mathematical Equation CNT2_0">

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Math: Converting to Images

• Remaining issues:

• formulas larger than screen size

• Hide the right information without hiding the formula itself (markup issue)

• Re-positioning formulas after hiding irrelevant information

• Unknown symbols

• Require some manual processing

Collaborating Partners Workshop