Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2006-06-20
2006-06-20
Rogers, Scott A. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003270, C358S532000, C382S199000, C382S261000, C382S266000
Reexamination Certificate
active
07064868
ABSTRACT:
An image processor of the invention has an object to provide an effective moire suppression by using a spatial filter and an efficient edge emphasis by using a spatial filter. When a spatial filter process is performed for moire removal, a spatial filter processing section of the image processor has a characteristic wherein the MTF presents values of not more than 1.0 for the entirety of the spatial frequencies to be contained in an image, and the minimum value for a moire-causative spatial frequency. This permits the image processor to prevent the quality degradation of the spatially filtered image. When a spatial filter process is performed for edge emphasis, a spatial filter processing section has a characteristic wherein the MTF is flat in an erroneous-judgment frequency band liable to cause an edge extraction error, and exceeds 1.0 at spatial frequencies below a lower limit of the erroneous-judgment frequency band. This permits the image processor to prevent the quality degradation of the spatially filtered image.
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Notification of Reason for Refusal Issued Aug. 10, 2004 in connection with Japanese Patent Application No. 11-110009.
Renner , Otto, Boisselle & Sklar, LLP
Rogers Scott A.
Sharp Kabushiki Kaisha
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