Appeal No. 1998-0643
Application 08/196,028
the text topline (claim 27), or the average character height
as a distance between the text topline and text baseline
(claim 28). Appellants do not separately argue the
application of Schlang to claims 26-28. Therefore, we sustain
the rejection based on lack of argument in the brief. See 37
CFR § 1.192(c)(8)(iv) (1996) ("For each rejection under 35
U.S.C. 103, the argument shall specify the errors in the
rejection and, if appropriate, the specific limitations in the
rejected claims which are not described in the prior art
relied on in the rejection, and shall explain how such
limitations render the claimed subject matter unobvious over
the prior art."). Nevertheless, we briefly consider Schlang
with respect to representative claim 26.
Schlang determines a skew angle representative of the
orientation of the text line to "derotate" the page before
bounding (e.g., col. 7, lines 22-27). A histogram is prepared
by projecting the number of character pixels along horizontal
lines at vertical addresses into a one-dimensional Histogram
Buffer oriented in a direction perpendicular to the
orientation of the text line (figure 10; col. 9, line 49 to
col. 10, line 2; cols. 15-16 under "DATUM HISTOGRAM
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