Microbiology and/or image analysis tools

[BW Glitch]

Hello all,

I've been searching on the web for microbiology and or image analysis
tools in any language (but I would prefer to be in Python ;), but I
haven't found anything useful. Almost every library I've found is
commercial. The only one I've seen open source is OpenEV (
http://openev.sourceforge.net/ ).

Is there any library open source available in these areas?

Thank you very much,

Andres Rosado