IMAGE PROCESSING APPARATUS AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an image processing apparatus and a program capable of improving gradation reproducibility in a partial image range selected from a multi-gradation monochromatic image while holding overall balance.SOLUTION: The image processing apparatus includes: an input luminance range recognition part 462 for recognizing an input luminance range in which input luminance information in a selected image range is distributed from multi-gradation monochromatic image data whose partial image range is selected as a processing target; an output luminance range recognition part 463 for recognizing an output luminance range to which an image formation part 44 can correspond to output a multi-gradation monochromatic image; and a luminance range expansion part 464 for mapping the input luminance information in the selected image range in the output luminance range and extending the input luminance range within the output luminance range.