| http://www.w3.org/ns/prov#value | - An endoscope inserting direction detecting method in accordance with the present invention consists mainly of: a first step of receiving an endoscopic image; a second step of detecting the direction of a change in brightness in the endoscopic image; and a third step of producing information concerning an endoscope inserting direction, in which an endoscope should be inserted, on the basis of the r
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