A method and system for automatically analyzing and searching a database of images or other digital content includes a process for analyzing images to identify portions capable of receiving text. An example method includes processing the raw channel data to form time dependent signals based one or more user specified processing rules. For example, the two orthogonal polarization directions can be approximately linear polarization slanted 45. The tube may be flexed during the process, freeing solids trapped in the tube to flow through the center of the tube. The present invention also includes a clutch assembly with the ring carrier and clutch housing.