COLOR SHIFT MEASURING METHOD, COLOR SHIFT MEASURING INSTRUMENT, COLOR SHIFT CORRECTING METHOD AND COLOR SHIFT CORRECTING APPARATUS

摘要

PPROBLEM TO BE SOLVED: To provide a color shift measuring method, a color shift measuring instrument, a color shift correcting method and a color shift correcting apparatus in which color shift characteristics can be measured without requiring a high-definition chart and without requiring a skill for placing the chart. PSOLUTION: This apparatus is provided with a profile generating means 101c for generating a profile concerning an input image containing a line or an edge by colors, a position calculating means 101d for finding the peak position or rise position of the profile by colors, a difference calculating means 101e for calculating a difference for each color related to the peak position or the rise position and a color shift quantity calculating means 101f for calculating the color shift quantity of the input image from the difference for each color. PCOPYRIGHT: (C)2003,JPO