| 摘要 |
PROBLEM TO BE SOLVED: To cancel a difficulty in improvement in the picture quality of an image, in which a character/fine line part and a gradation part are mixed. SOLUTION: On the basis of a user instruction from an operating part 280, a selector 260 selects either data, with which a random number is added to an input image signal by a random number adding part 250, or data, with which the random number is not added. |
