A method, system and apparatus for registering different objects in filter rod shaped articles, for example as found in the tobacco processing industry. The method, system and apparatus can include a rod containing cigarette filter components; one or more sensors that determine the constitution of segments of the rod and transmits one or more signals regarding segments of the rod; a processor that receives the one or more signals from the one or more sensors, performs a comparison between the one or more signals and known data and transmits a signal based upon results of the comparison; and an ejector that receives the signal from the processor and removes any segment of the rod that does not conform with the known data.