Arrangement for high-resolution scanning of large image formats with exact geometrical correspondence

In an arrangement for high-resolution scanning of large image formats for providing scanned images of said large-image formats with substantially exact geometrical correspondence, said arrangement having at least one CCD matrix whose magnitude constitutes only a fraction of the image model to be scanned, a frame grabber, and a movement mechanism, the improvement comprising:

• means for provision of an accurate measure of length and width dimensions of the CCD matrix, wherein the measurement is performed, prior to high-resolution scanning of a large image format, by evaluating local light response distributions of all the pixels to determine actual distances between pixels of the CCD matrix, said matrix itself representing an absolute dimensional embodiment in the form of a premeasured pixel raster;
• said CCD matrix including an active pixel area corresponding to maximum memory area of said frame grabber and being fixed with respect to the number and position of pixels;
• means, based on pixel synchronization of image read-in to the frame grabber for assuring constancy of a one-to-one correspondence allocation of the pixel area to the memory;
• and
• said movement mechanism being a high-precision scanning means whose operation is in accordance with and determined by the premeasured pixel raster, said mechanism for scanning the active pixel area of the CCD matrix in the image format to be scanned so as to cover the surface without gaps and substantially without overlaps, said scanning being effected without the use of any auxiliary means.