Relates to a method for processing an image, the method step of assigning a value of the positioning error to the details in the image, the step of visualizing said value of the positioning error, the present invention is interactive in the value I comprises the step of storing the value of the positioning error with respect to the position of the steps and details, to allow adjustment. In step 1a of the process, 2b and 2a details the two images 1 and 2 are identified. Details which are positioned so as to overlap the outer surface of the femur 3. For example, by using an appropriate 4b elliptical and 4a, each detail is assigned the value of the positioning error to be visualized to the user by this. Value of each of the positioning error is employed manually by the user using an appropriate input means. Instead, it is assigned to the detail based on the parameter value of the positioning error showing the image quality are also possible. Instead, that all pixels in the image is assigned an initial default value of the positioning error is further possible, which corresponds to the imaging modality acquired by the image 1. The user is provided with means for interactively adjusting the value of the positioning error. For this purpose, for example, the user can drag the boundary of each of the ellipse with the cursor 8, to modify the corresponding values of the positioning error by this. The value of the positioning error is stored together with the coordinates of the detail in the image. If the measurement for any minor Thus, linked to the positioning error is executed, the measurement result, I includes the value of the uncertainty resulting from the value of the positioning error. Is schematically illustrated in the window 9, which feeds back the measurement result of the distance between the image detail and 2b 2a. By redefining the area 4a of the positioning error for the details and 2b 2a, expanded them, and 4b, the user may adjust the assigned values of th
