11. The device according to claim 1 , wherein the device comprises a line-of-writing detector arranged to identify, on the basis of locations of the elements of writing identified by the Hough transformer, a line along which the detected characters are arranged.
11. The device according to claim 1 , wherein the device comprises a line-of-writing detector arranged to identify, on the basis of locations of the elements of writing identified by the Hough transformer, a line along which the detected characters are arranged. 13. The device according to claim 11 , wherein the line-of-writing detector is arranged to determine, as a line of writing, a line on which more than a predefined number of extremes of identified circular arcs or elliptical arcs are located.