Appeal No. 1007-0016
Application No. 08/162,333
The claimed invention relates to the sharpening of an
input image in which a high frequency component of an edge
region portion of the input image is extracted and integrated
to produce a sharpness value. More particularly, Appellant
indicates at pages 8-17 of the specification that a high
frequency emphasis coefficient is calculated from this
sharpness value and is further manipulated and added to the
input image to produce a sharpened signal.
Claim 11 is illustrative of the invention and reads as
follows:
11. An apparatus for producing a sharpened image from an
input image, comprising:
edge extraction means for receiving the input image and
extracting a portion of the input image at which the
brightness of the input image exhibits a great variation and
outputting the extracted portion as an edge region;
high frequency filter means for receiving the edge region
from the edge extraction means and extracting a high frequency
component of the input image from the edge region;
integration means for receiving the extracted high
frequency component and integrating the extracted high
frequency component to output a sharpness value;
parameter calculation means for receiving the sharpness
value from the integration means, calculating a high frequency
emphasis coefficient from the sharpness value and outputting
the high frequency emphasis coefficient as a sharpening
parameter; and
2
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