| 摘要 |
PROBLEM TO BE SOLVED: To accelerate a multi-valuing processing and to simplify a structure. SOLUTION: Offset information set by a setting part 7 for setting offset information between one basic dither matrix value and a dither matrix is stored in an offset information storage memory 6, a multi-valuing table is prepared by a multi-valuing table preparation part 5 by the stored offset information and the prepared multi-valuing table is stored in a multi-valuing table storage memory 3. Then, by using a basic dither matrix and the stored multi-valuing table, input images are multi-valued by a multi-valuing part 1.
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