Color Mixing Correction for Post-printed Patterns on Colored Background Using Modified Particle Density Model

Color mixing occurs between background and foreground colors when a pattern is post-printed on a colored area because ink is not completely opaque. This paper proposes a new method for the correction of color mixing in line pattern such as characters and stamps, by using a modified particle density model. Parameters of the color correction can be calculated from two sets of foreground and background colors. By employing this method, the colors of foreground patterns on any background can be transformed into the color on the base background color.