An endoscope system (1) comprises: an insertion part (2b) which is inserted in a subject an object optical viewport (11a) which is disposed on the leading end side of the insertion part (2) and which receives light from the subject an image capture element (11) which captures an image of the interior of the subject a location-direction detection unit (25) which acquires location information of the object optical viewport (11a) and a memory (22) which associates the image of the interior of the subject which is acquired by the image capture element (11) with the location information of the object optical viewport (11a) and records same. On the basis of a degree of change of the information of the image of the interior of the subject in the interior of the subject, etc., the endoscope system (1) aligns the location information of the object optical viewport (11a) with the location in a coordinate system of a prescribed organ model image in the interior of the subject, and generates an image which superimposes the image of the interior of the subject upon the prescribed organ model image whereupon the location of the object optical viewport and the location in the coordinate system are made to correspond.La présente invention concerne un système dendoscope (1) qui comprend : une partie dinsertion (2b) qui est insérée dans un sujet une fenêtre daffichage optique dobjet (11a) qui est disposée sur le côté extrémité avant de la partie dinsertion (2) et qui reçoit de la lumière du sujet un élément de capture dimage (11) qui capture une image de lintérieur du sujet une unité de détection de direction demplacement (25) qui acquiert des informations demplacement de la fenêtre daffichage optique dobjet (11a) et une mémoire (22) qui associe limage de lintérieur du sujet qui est acquise par lélément de capture dimage (11) aux informations demplacement de la fenêtre daffichage optique dobjet (11a) et lenregistre. Sur la base dun degré de modification des informations de limage
