INTERMEDIATE COLOR DECIDING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an intermediate color deciding device with which an intermediate color most suitable for human visual characteristics can be decided at high speed. SOLUTION: A background picture element pallet number/equal space ID converting part 16 converts the pallet numbers of picture elements in a background image data storage part 100 to the combination of equal space ID values and outputs it to a blend part 18. A fore-ground picture element pallet number/ equal space ID converting part 17 converts the pallet numbers of picture elements in a fore-ground image data storage part 200 to the combination of equal space ID values and outputs it to the blend part 18. The blend part 18 synthesizes these two kinds of combination of equal space ID values at a blend rate outputted from a blend rate deciding part 15 and outputs the synthesized result to an equal speed ID/pallet number converting part 19. The equal space ID/pallet number converting part 19 converts this synthesized result to a pallet number and outputs it to an image data write part 300.