Center for Bio-Image Informatics, Electrical and Computer Engineering Department, University of California Santa Barbara, CA, USA. kris@cs.ucsb.edu|Center for Bio-Image Informatics, Electrical and Computer Engineering Department, University of California Santa Barbara, CA, USA. kris@cs.ucsb.edu|Center for Bio-Image Informatics, Electrical and Computer Engineering Department, University of California Santa Barbara, CA, USA. kris@cs.ucsb.edu|Center for Bio-Image Informatics, Electrical and Computer Engineering Department, University of California Santa Barbara, CA, USA. kris@cs.ucsb.edu|Center for Bio-Image Informatics, Electrical and Computer Engineering Department, University of California Santa Barbara, CA, USA. kris@cs.ucsb.edu