Appeal No. 1997-4067
Application 08/285,324
(e) diffusing the error value to adjacent pixels
based on the selected set of weighting coefficients.
14. A method of binarizing a multi-level pixel,
comprising the steps of:
(a) identifying areas of an image to be processed
by a set of first image processing operations and areas
of the image to be processed by a set of second image
processing operations;
(b) processing the multi-level pixel with the set
of first image processing operations when the multi-
level pixel is in an area identified as to be processed
by the set of first image processing operations and
generating an error and binary value therefrom;
(c) processing the multi-level pixel with the set
of second image processing operations when the multi-
level pixel is in an area identified as to be processed
by the set of second image processing operations and
generating an error and binary value therefrom;
(d) distributing a weighted portion of the error
to unprocessed pixels based on a first set of weighting
coefficients when the multi-level pixel is processed by
said step (b); and
(e) distributing a weighted portion of the error
to unprocessed pixels based on a second set of
weighting coefficients when the multi-level pixel is
processed by said step (c).
The Examiner relies on the following prior art:
Williams et al. (Williams) 5,307,180 April 26, 1994
Kanno et al. (Kanno) 5,307,426 April 26, 1994
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