COATING-COLOR-EVALUATION-IMAGE GENERATION METHOD AND GENERATION PROGRAM AND COATING-COLOR-EVALUATION-IMAGE GENERATION DEVICE

摘要

This coating-color-evaluation-image generation method for generating a coating-color-evaluation image from a surface-for-coating image displaying a surface for coating comprises a spectral reflectance calculation step for calculating the spectral reflectance of metallic color coating for each prescribed angle within an observation angle range, a color measurement value calculation step for calculating color measurement values for each prescribed angle in the observation angle range, a histogram generation step for determining pixel number ratios for each gradation level, a mapping step for associating the gradation levels in the surface-for-coating image with observation angles at each prescribed angle in the observation angle range, and a coating-color-evaluation-image generation step for generating a coating-color-evaluation image that has been colored in amounts corresponding to the pixel number ratios for each gradation level associated with the observation angles in order from the largest to the smallest observation angle.