Color Segmentation w/ PIL?

[MooMaster]

I'm trying to write a Digital Image Processing program using the PIL
library, and upon consultation of the Handbook I see that it seems to
have built in functions to run Edge Detection (in the ImageFilter
module), but I don't see anything about Segmentation. Are there any
built-in tools to do this operation? Has anyone done this operation
with PIL in the past that can lead me in the right direction?