Methods for auto-separation of texts and graphics
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United States of America Patent
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Mar 28, 2006
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app pub date -
Feb 25, 2002
filing date -
Feb 25, 2002
priority date (Note) -
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Abstract
The present invention is directed to a method of discriminating between textual content and graphical content. The method includes the steps of receiving a plurality of pixel values for a pixel line segment, calculating a plurality of spatial gradients based on the pixel values of adjacent pixels, determining a smoothness index by processing the plurality of spatial gradients, and identifying the pixel line segment as text or graphics by comparing the smoothness index to a threshold value.
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