Determines the preflood level for the Watershed and Reduce operators.

A Long value.  

object.PrefloodLevel [= value]

The PrefloodLevel Property syntax has these parts:

Added after IQBase 1.1

This value is used to dermine how much preflooding of the distance map is done to eliminate the effect of small boundary irregularities in determining local maxima. The preflooded local maxima in the distance map are the output of the Reduce operator and are the “seed points” for the Watershed separate operator.

The value essentially determine how large a boundary “bubble” needs to be before it is considered a separate “blob”. The default value of 1 is suitable for most images. Zero is not recommended, because very small boundary irregularities will create small separations. Values above 3 are rarely useful, though values up to 100 can be assigned.

Negative values are illegal. Values greater than 100 are silently truncated to 100.