Appeal No. 1996-0485 Page 11
Application No. 08/139,456
image to be enhanced in an original image storage 20.
Software running on the microprocessor averages RGB component
values for pels of the image. The averaged pel values are
then compared to find respective perceived colors stored in a
look-up table 22 having RGB components most closely matching
those of each respective averaged pel pair of the original
image. Each of the perceived colors in the table 22 may be
generated by displaying a unique corresponding pair of input
palette color pels proximally to one another that will be
"blended" by the eye and thus perceived as having a certain
color. The input palette colors will be of a limited number.
The various combinations of them produce a larger number of
RGB components of net perceived colors, each being stored in
the table 22 along with the pair of input palette colors
defining the particular perceived color. Col. 8, ll. 12-31.
Under control of the microprocessor 18, when the
perceived color in the table 22 has been found that has RGB
components most closely matching those of two averaged pels
from the original image that were proximal to one another, the
two input palette colors producing the perceived color are
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