Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2005-11-15
2005-11-15
Rogers, Scott A. (Department: 2626)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003240, C358S462000, C382S173000, C382S276000
Reexamination Certificate
active
06965457
ABSTRACT:
An apparatus for image processing which determines such attributes as screen halftone area, character area and continuous tone area that appear in image data. A wavelet transform circuit wavelet transforms values of picture elements within a reference block selected from an image. Absolute value calculation circuits and adders calculate characteristic values representing characteristics of said reference block for every spatial frequency band on the basis of results of wavelet transform. And a determination circuit determines an attribute of notice area made up of one or a plurality of picture elements within the reference block on the basis of the characteristic values of the reference block.
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Kuwano Hideyuki
Murata Kazuyuki
Nakanishi Takashi
Takahashi Naoki
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