1. A method for processing visual images of a digestive system, the method comprising: detecting visual images of a digestive system; storing the detected visual images; analyzing the stored visual images to identify corresponding event frames and medical events associated with each event frame by recognizing a contraction pattern of the digestive system wherein a medical event is at least one of a normal event, a bleeding event or an ulcer event; and displaying the identified event frames quantitatively organized based on one or more identified medical events identified by the analyzing the event frames.