A method for actuating an element in the air supply tract of an internal combustion engine, characterized in that the element is actuated such that it opens the air supply tract before the pinion engages into the toothed ring of the internal combustion engine. In one approach, the distortion is reduced by estimating distances to different parts of the object and then generating a reprojected image of the object dependent upon the estimated distances and upon a virtual viewpoint that is more distant than the camera from the object. Using either a whole slide image or the relative x-y coordinates of the tissue spots on the slide, individual tissue spots in different tissue microarrays may be linked to one another and their clinical information. The volume of the bag can be accounted for when obtaining the volume of the specimen.