Image processing method and system

摘要

When image processing is carried out on a color image signal which is made up of a plurality of signal components representing respective picture elements and is obtained by a color image read-out system having a limited color read-out range and a processed color image signal is output to a color image output system having a limited color reproduction range, picture elements whose colors are inside the color reproduction range of the color image output system out of the picture elements included in a predetermined region including a picture element is counted for each of the picture elements represented by the color image signal. A transformation curve for compressing the color image signal within the color reproduction range of the color image output system is generated according to the number of picture elements whose colors are inside the color reproduction range of the color image output system out of the picture elements included in the predetermined region. The color of each picture element is transformed on the basis of the transformation curve thus generated, and a color image signal made up of signal components representing the colors of the picture elements thus transformed is output to the color image output system as the processed image signal.