Methods for auto-separation of texts and graphics

Details Methods for auto-separation of texts and graphics Methods for auto-separation of texts and graphics

2006-03-28

2006-03-28

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics processing

Graphic manipulation

C345S598000, C345S599000, C358S002100, C358S462000, C382S113000, C382S176000, C382S194000, C382S201000, C382S228000

Reexamination Certificate

active

07019761

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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Examination Report for GB0418717.5 dated Feb. 11, 2005.

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