title: Detection of filamentous bulking problems: developing an image analysis system for sludge composition monitoring.
abstract: This article describes a fully automatic image analysis procedure for fast and reliable characterization of the activated sludge composition, that is, the floc and filament features. The algorithms developed for each of the analysis steps, that is, segmentation, object recognition, and characterization, are described in detail. Although the application range of the recognition method is a priori expanded by introducing a number of control parameters, the procedure proves to be intrinsically robust as it produces satisfactory results for a fixed set of parameter values for a wide variety of image types.
authors.affiliation: BioTeC-Bioprocess Technology and Control, Katholieke Universiteit Leuven, Department of Chemical Engineering, W. de Croylaan 46, B-3001 Leuven, Belgium.
authors.forename: Rika
authors.initials: R
authors.lastname: Jenné
authors.forename: Ephraim Noble
authors.initials: EN
authors.lastname: Banadda
authors.forename: Ilse
authors.initials: I
authors.lastname: Smets
authors.forename: Jeroen
authors.initials: J
authors.lastname: Deurinck
authors.forename: Jan
authors.initials: J
authors.lastname: Van Impe
mesh_terms: D000465:Algorithms; D004784:Environmental Monitoring / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D018715:Microscopy, Video / Q000379:methods; D015203:Reproducibility of Results; D012722:Sewage / Q000032:analysis*
chemical_list: D012722:Sewage