Proposal of a Method for Measurement of Garishness of Metallic Painted Surfaces

Abstract

A method for measurement of garishness of metallic painted surfaces is proposed in this paper. The light distribution reflected from the surface is captured with a TV camera. To measure the degree of the unevenness of the distribution, the normalized brightness of the distribution is converted into roughness-height. The roughness parameter Ry and Ra which are defined in JIS B0601 are calculated using the roughness-height. As a result, it has been understood that Ry and Ra are highly correlated with the psychological garishness.