Abstract: Apparatus for assuring complete stripping of fibers from a bobbin in a bobbin stripping system includes a bobbin stripping station including oscillating water jets, a viewer to view bobbins as they are being stripped at the stripping station and to generate signals representative of a bobbin being stripped. A water jet position sensor generates a signal indicative of whether the position of the water jets is such that the viewer's view of the bobbin is unobscured. An indexing conveyor moves fully stripped bobbins from the stripping station and unstripped bobbins to the bobbin stripping station. A bobbin transport sensor generates a signal when the indexing conveyor is moving a bobbin to or from the bobbin stripping station. A computation device selects pixels of the signals from the viewer, counts a first number of pixels indicative of fibers and a second number of pixels indicative of bobbin.