The invention relates to a method implemented within a mission system comprising an electro-optical camera which generates video images, detects movable objects, and tracks a target object, and a radar sensor which generates signals and detects points, said method involving: acquiring (110) a video image provided by the camera and points provided by the radar sensor at the time of generation of the acquired video image; converting (120) the geographic position of each acquired point, expressed in a first reference mark associated with the radar sensor, into a geographic position expressed in a second reference mark associated with an aiming direction of the electro-optical camera at the time of generation of the video image, correcting (130) the geographic position of each point in the second reference mark, according to the characteristics of the camera, such as to obtain a position in the image.