Index of Metallic Taste from Lightness Distribution of Real Images

Abstract

As one of the high-value-added prints, embellished metallic prints via digital on-demand metallic foil printing have been of interest. Due to their eye-catching appearance, they are suitable for commercial prints, such as cosmetic packages and advertisements. Despite an expanding market, color management of the metallic prints still depends on visual judgment and the prescribed index of metallic taste has not yet been defined. Since the absence of an index has decreased productivity of people involved in this market, such an index based on perception has been needed. Thus, we suggest an index calculated from the lightness distribution of the real metallic images. The index possessed a linear correlation with perception and distinguished several appearances of the metallic images. It should be useful for several creative scenes in this market.