11
Decision and
Update
• For the T distribution, statistical tables
give us the
probability Pr(T
£
t) for a given degrees of freedom
and a
confidence level. From this, pick suitable
threshold t.
• If the computed T £ t for desired confidence level,
add y to region R and update X
and S .
• If T is too high, the value y is not likely
to have arisen
from
the population of pixels in R. Start a new region.
2