In essence, the adaptive OMR threshold signal 548 is an altered version of the amplified/filtered CCD video signal 547 that stays within the bounds of the peak-to-peak amplitude swings of the amplified/filtered CCD video signal 547, and each time the adaptive OMR threshold signal 548 crosses with the amplified/filtered CCD video signal 547, an OMR event (i.e., a transition from a dark to light reg