1. An image processing apparatus comprising: a decomposing section that decomposes a luminance component of a given original image into a plurality of band images in respective bands; a band intensity calculating section that calculates band intensities of the respective band images; and a determining section that determines band selection information indicating an emphasis band and band emphasis information to be used for controlling a degree of image emphasis based on the band intensities of the respective bands; wherein the determining section determines band selection information based on differences between the band intensities of the respective bands and set band reference values and determines band emphasis information according to a difference between the band intensity and the band reference value of the band indicated by the band selection information.