Appeal No. 95-2827
Application 07/983,211
within the image.” The two embodiments of this reference
respectively compare the average gray value of the original
image to the average gray value of the output image or the
average gray value of the modified image being compared to the
average gray value of the output image. The discussion of
Figure 1 in this reference indicates that each pixel is
defined at a single level or optical density in a set of
optical density levels. Column 4, lines 48 to 52. Finally,
at column 5, lines 9 to 13, Eschbach states that “[g]ray
values are typically expressed as integers, with one example
falling in the range from 0 to 255, although greater or lesser
number of levels, as well as non-integer representations, are
possible.”
For his part, Itoh seems to speak the same language as to
density. At column 1, lines 14 to 16, Itoh states “an image
constituted by a plurality of pixels each of which is formed
by density data consisting of a plurality of bits.” With
respect to Figure 1 of this reference, it is stated at column
3, lines 13 to 16 that “each square denotes one pixel, and a
numeral in each square denotes the density of the pixel.”
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Last modified: November 3, 2007