Appeal No. 1998-0618
Application 08/288,194
is so selected that an angle between two adjacent directions
from which images of the references faces are taken is equal
to or greater than 10 degrees and no greater than 40 degrees.”
(Answer-pages 4 and 5.)
The Examiner notes that Rothfjell teaches capturing
reference faces, from one on up, at different angles depending
on different specific embodiments. Thus, the Examiner
contends,
[I]t would have been obvious to one skilled in the
art at the time the invention was made to capture
such reference faces at different angles in Kado’s
system to derive different and distinguishable
characteristics, from more than one view, for
accurate recognition as taught by Rothfjell.
Because the identification becomes more accurate
with an increased number of images, it is clear that
an increased number of images reduces the relative
angle between them. Therefore, Rothfjell suggests
that additional images (along with corresponding
reduced angles) would provide better identification,
so that one of ordinary skill would have found it
obvious to utilize a larger number of images.
Absent any teaching or criticality, providing the
images are captured at different angles is a matter
of design choice as it is taught by Rothfjell that
any number of images can be captured, from one on
up, depending on a specific embodiment. (Answer-
page 5.)
Appellants argue that an important feature of their
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