Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2007-09-11
2007-09-11
Williams, Kimberly (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003260, C348S241000, C382S274000, C355S052000
Reexamination Certificate
active
10603458
ABSTRACT:
An image correction processing apparatus for correcting a pixel value of each pixel constituting image data obtained from an original image affected by the peripheral light-off is disclosed. The apparatus includes a pixel coordinate transforming unit for converting a distance between each pixel of a group of pixels which have an equal amount of peripheral light amount reduction and which are located on a common contour line of an oval about a predetermined reference pixel located at the center thereof and said predetermined reference pixel into a radius of a true circle having a diameter corresponding to the major axis of the oval; a cos4calculating unit for obtaining, for each pixel, an angle value thereof in proportion to the radius obtained by the conversion and then obtaining a cos4value of the angle value; and a correction calculating unit for multiplying an inverse of said cos4value obtained for each pixel by a pixel value of this pixel, thereby to obtain a corrected pixel value for the pixel.
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Kita Koji
Watanabe Kazumi
Fulbright & Jaworski LLP
Noritsu Koki Co., Ltd.
Williams Kimberly
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