Concept for overlaying an intraoperative live image of an operating area with a preoperative image of the operating area

A device (100) for superposing an intraoperative first live image (112) of an operating area (105) with a preoperative second image (114) of the operating area (105), comprising means (110) for recording and providing the first image (112 ) means (120) for providing the second image (114), means (130) for defining characteristic points (131-1; ...; 136-1) in the first image (112) and defining to the characteristic points corresponding points (131-2; ...; 136-2) in the second image (114), so that the characteristic points and the corresponding points in the first and second image corresponding positions of the operation area (105 ) means (140) for transforming the first and / or second image so that the characteristic points (131-1; ...; 136-1) of the first image (112) and the corresponding points (131-) 2; .. . 136-2) of the second image (114), and means (150) for, after transforming, superimposing the second image with the first image or the operation area to form a superimposed view (145) of the operation area (105 ) to obtain.