Sorry about the delay in the postings (three drafts are in line to be published as posts here..) fortunately the week had some good times, one being the Golan Levin workshop about Computer Vision in Future Places 2009. The workshop gave me more insight on using Processing for blob tracking and other computer vision related stuff, also I gained more insight with OpenCV..!
Really important link
HIPR website [A great reference for everything related with computer vision algorithms, such as slope tech, OTSM, dilation and erosion, and so on… (just to mention some that I already looked up).]
Some interesting links
OpenCV port to Processing [fairly easy to use // of course with loss of performance]
Golan Lectures online [interesting material!]
Golan Project Reports [insight on his projects]
Final Note: I did a small blob tracking code for procesing based on the open source examples given, that tracks several blobs and classifies then with a tag (small, big, huge) and a color fill that depends on the size too.