Color video still image processing system

Abstract

The present invention is directed to a method of processing a color video signal in which printing color separation data is formed from a color video signal and a printing original plate is made by using the printing color separation data. This color video signal processing method is comprised of the steps of reading out a reference color test chart by a printing scanner and producing scanner four color separation data of the reference color test chart by the printing scanner, taking a picture of the reference color test chart radiated by a standard light source by a video camera, producing camera four color separation data from a color video signal output from the video camera, comparing the scanner four color separation data with the camera four color separation data and allowing a level difference therebetween to be stored in a memory as correcting data which is used to correct the camera four color separation data, and correcting the four color separation data by the correcting data stored in the memory to thereby produce four color separation data when the four color separation data for making the printing original plate are generated from a color video signal of the video camera. Therefore, a printing original plate having satisfactory color reproducibility can be produced by utilizing the video camera.