EVALUATION OF MULTICOLOR PRINTING QUALITY BY IMAGE-ANALYSIS

Knowledge of colour gamuts and colour gamut characteristics of all dev ices and materials involved in the system is a precondition for fullya utomatic colour reproduction in the printing industry. The colour valu es of the printed and unprinted parts as well as their areas determine the colour value of the reproduction, so that the characterisation of the colour distribution on and in the print substrate is of high sign ificance in practice. Using a RGB camera and image analysis algorithms (fourier transformation, colour space transformation), it is possible to calculate both the geometric and spectrophotometric parameters of a colour print.