Method of photo/text separation using path frequency of...

Details Method of photo/text separation using path frequency of... Method of photo/text separation using path frequency of...

2008-01-08

2008-01-08

Couso, Jose L. (Department: 2624)

Image analysis

Image segmentation

Distinguishing text from other regions

Reexamination Certificate

active

07317832

ABSTRACT:
A method of photo/text separation using path frequency of pixel intensities is disclosed. It divides an original image into n*n pixel blocks and records the path conditions satisfied by the intensities of consecutive two pixels. From the statistical analysis of the path appearance frequency, the method determines the text/photo types in the pixel block, thereby determining the output type of the whole original image.

REFERENCES:
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patent: 5767978 (1998-06-01), Revankar et al.
patent: 6744918 (2004-06-01), Caldato et al.
patent: 6917707 (2005-07-01), Kubota
patent: 7043080 (2006-05-01), Dolan

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