Application of a Pearl Pigment for an Artifact Metrics

Abstract

The pearl pigment emits pearly colors, and its hue differs depending upon the view direction. The authors estimate that this optical feature could apply to the artifact metrics. (1) Two types of optical characteristic information exist in an artifact (a solid epoxy resin) painted with the pigment and were reflected in two types of images (visible images and near-infrared images). (2) Each image from the same image group has a uniqueness when we calculated a correlation ratio using a phase-only correlation method. Hence, we could say that the pearl pigment is suitable for applications to the artifact metrics intended for the solid epoxy resin.