Image analysis – Pattern recognition – Feature extraction
Reexamination Certificate
2006-02-21
2006-02-21
Mehta, Bhavesh M. (Department: 2625)
Image analysis
Pattern recognition
Feature extraction
C358S453000, C358S462000, C358S515000, C358S538000, C382S171000, C382S178000, C382S194000, C382S202000, C382S224000, C382S275000, C382S282000, C715S252000, C715S252000, C715S252000
Reexamination Certificate
active
07003159
ABSTRACT:
Frames such as boxes or rectangles are recognized in image document data. A first determination process initially screens frames by applying a first set of criteria to select frame candidates. The first set of criteria includes a comparison of a dimension to a predetermined threshold value. A second determination process then further determines whether or not the selected frame candidates are true frames based upon a second set of criteria. For each frame candidate, a pair of a black pixel rectangle and a white pixel rectangle is determined. The second set of criteria includes at least some information on the black pixel rectangle and the white pixel rectangle.
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Desire Gregory
Knoble & Yoshida & Dunleavy LLC
Mehta Bhavesh M.
Ricoh Co. Ltd.
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