^ + i?|sinc(^)|cos(27ri;>>). Analogous results can be obtained for other
directions.
It should be pointed out that \s\nc(v/n)\ does not decrease monotonically
with increasing spatial frequency v. In fact, this function does decrease to
zero as ν increases to n, but it then increases again; it has zeros at integer
multiples of n, separated by peaks which become smaller and smaller as ν
increases. This corresponds to the fact that when the sinusoidal bar frequency
is an exact multiple of
n,
the averaging neighborhood covers an integer number
of periods of the bar pattern, thus yielding a constant value of the average
at any point ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.