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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. Math: Converting to Images. What to convert?

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Math converting to images l.jpg

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


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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


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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


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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">

Collaborating Partners Workshop


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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