Measurement marks are disposed at known positions on the object to be photographed. A photograph of the object is taken so that images of at least three measurement marks are shown. The photograph is then scanned, digitised, and stored on a data carrier. Two-dimensional coordinates of the images of the measurement marks are obtained from the digitised photos. These coordinates corresp. to the pick-up position for taking photographs. The coordinates are matched with a characteristic number for photography and stored together with this number. The object is made of a material with a negligible coefft. of thermal expansion. The data carrier may be a photo-CD.
