A video camera and recorder were placed inside the solid rocket booster forward skirt in order to view foam loss events over an area on the external tank (ET) intertank surface. In this Technical Memorandum, a method of processing video images to allow rapid detection of permanent changes indicative of foam loss events on the ET surface was defined and applied to accurately count, categorize, and locate such events.Rieckhoff, T. J. and Covan, M. and OFarrell, J. M.Marshall Space Flight CenterPHOTOGRAPHIC RECORDING; IMAGE PROCESSING; IMAGE ANALYSIS; EXTERNAL TANKS; FOAMS; LEAKAGE; BOOSTER ROCKET ENGINES; SPACE SHUTTLE BOOSTERS; THERMAL PROTECTION; PHOTOGRAPHIC PROCESSING EQUIPMENT...