| 摘要 |
PURPOSE: To enlarge or reduce picture data by an arbitrary real number magnification by providing a means for executing over-reading or skip-reading on input picture data so that the number of processing times in a main scanning direction and an subscanning direction becomes a specified number of times. CONSTITUTION: Continuous ((m)×(n)) pieces of input picture data which are arranged by m-pieces in the main scanning direction and n-pieces in the subscanning direction are inputted by an input part 1. A magnification gradation conversion part 2 over-reads or skin-reads input picture data in accordance with the enlargement or reduction magnification (p) in the main scanning direction and the enlargement or reduction magnification (q) in the subscanning direction so that the number of processing times in the main scanning direction becomes ((p)×(m)) times and the number of processing times in the subscanning direction becomes ((q)×(n)) times. The magnification gradation conversion part 2 substitutes data showing gradation so that the gradation of continuous data continuously changes by executing over-reading and skip-reading. |
